Highlights of Soft Matter (DSOFT) Talks @ APS 2021 March Meeting (1)
American Physics Society (APS) March meeting is one of the largest physics meetings in the world. In 2021, the meeting will be held online due to COVID-19.
To help the community quickly catch up on the work to be presented in this meeting, Paper Digest Team processed all talk abstracts, and generated one highlight sentence (typically the main topic) for each. Readers are encouraged to read these machine generated highlights / summaries to quickly get the main idea of each talk. This article is on the talks related to Soft Matter (DSOFT).
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TABLE : Soft Matter (DSOFT) 1
| Title | Authors | Highlight | Session | |
|---|---|---|---|---|
| 1 | Swimming in Elastic Liquids: Faster or Slower than their Newtonian Counterparts? | Shaqfeh, Eric S | In this talk, I will review the field including how large scale numerical simulation can predict mechanisms of speed enhancement or retardation. | Session 1: Active Colloids |
| 2 | Microorganism locomotion in viscoelastic fluids | Thomases, Becca | We use computational models of swimmers in viscoelastic fluids to investigate and provide mechanistic explanations for emergent swimming behaviors. | Session 1: Active Colloids |
| 3 | Pairwise and collective behavior of dumbbell swimmers at intermediate Reynolds numbers | Dombrowski, Thomas; Nguyen, Hong; Klotsa, Daphne | We computationally investigate the pairwise and collective behavior of simple, reciprocal dumbbell swimmers composed of two unequally sized spheres at intermediate Reynolds numbers (0.1 < Re < 100). | Session 1: Active Colloids |
| 4 | Sedimenting chiral swimmers | Fadda, Federico; Molina, John; Yamamoto, Ryoichi | The squirmer model is a theoretical model introduced to study microorganisms like algae and bacteria [1]. | Session 1: Active Colloids |
| 5 | Chiral propulsion: the method of effective boundary conditions | Korneev, Leonid; Kharzeev, Dmitri; Abanov, Alexandre | We revisit a problem of computing the chiral propulsion for bodies with helical symmetry in a fluid at low Reynolds numbers. | Session 1: Active Colloids |
| 6 | Effect of inertia on the collective dynamics of an active suspension of mesoscale model swimmers | Nguyen, Hong; Dombrowski, Thomas; Klotsa, Daphne | We computationally examine how the collective behaviors emerge in a collection of simple model swimmers immersed in a viscous incompressible fluid as the impact of inertia, characterized by the Reynolds number (Re), gradually increases. | Session 1: Active Colloids |
| 7 | Enhanced hydrodynamic performance of biomimetic tapered propulsor | Demirer, Ersan; Oshinowo, Oluwafikayo; Alexeev, Alexander | Using three-dimensional fully coupled fluid-structure interaction simulations, we showed that fin tapering is an effective approach to generate travelling waves in underwater propulsors. | Session 1: Active Colloids |
| 8 | Command of active droplets in a nematic liquid crystal by an electric field | Rajabi, Mojtaba; Lavrentovich, O | Here we report real-time control of both the propulsion direction and the speed of active droplets in a nematic by an ac electric field. | Session 1: Active Colloids |
| 9 | Reconfigurable Artificial Microswimmers with Internal Feedback | Alvarez Frances, Laura; Fernandez-Rodriguez, Migue Angel; Alegria, Angel; Arrese-Igor, Silvia; Zhao, Kai; Kröger, Martin; Isa, Lucio | Here, we create a new class of responsive microswimmers, powered by induced-charge electrophoresis, which can adapt their motility to external stimuli via internal feedback. | Session 1: Active Colloids |
| 10 | Viscoelastic burrowing locomotion in nematodes reveal transition to complex postural dynamics | Pierce, Christopher; Sun, Gongchen; Lu, Hang; Goldman, Daniel | We observed C. elegans burrowing within non-Newtonian gels with tunable viscoelasticity – models of conditions in rotting fruit. | Session 1: Active Colloids |
| 11 | Quantifying the Spatiotemporal Dynamics of Locomotory Waves | Ahamed, Tosif; Asuka Guan, Sihui; Hung, Wesley; Zhen, Mei | Here, we develop methods to quantify locomotor wave dynamics at a high spatiotemporal resolution. | Session 1: Active Colloids |
| 12 | Individual and collective dynamics of chemically-active droplets | Michelin, Sebastien | In this presentation, I will present some of our recent work on the emergence of complex individual behaviour and on the nonlinear interplay of hydrodynamic and chemical interactions in droplet collisions. | Session 1: Active Colloids |
| 13 | Spontaneous chiralization of polar active colloids | De Corato, Marco; Pagonabarraga, Ignacio; Natale, Giovanniantonio | Using numerical simulations, we show that such spontaneous chiralization is a generic feature of polar active colloids. | Session 1: Active Colloids |
| 14 | Dynamic Overlap Concentration Scale of Active Colloids | Mallory, Stewart; Omar, Ahmad; Brady, John | By introducing the notion of a dynamic overlap concentration scale, we identify universal and previously unreported features of the mechanical properties of active colloids. | Session 1: Active Colloids |
| 15 | Regularized modelling of phoretic particles in reactive suspensions. | Rojas-Pérez, Francisco; Delmotte, Blaise; Michelin, Sebastien | To model these coupled diffusio-phoretic effects and hydrodynamics interactions, we propose a generalization of the classical Force Coupling Method (FCM) to treat both problems in an integrated framework. | Session 1: Active Colloids |
| 16 | Novel colloidal probes to quantify hydrodynamic and phoretic interactions | Carrasco, Celso; Aubret, Antoine; Martinet, Quentin; Palacci, Jeremie | We propose and synthesize a novel type of colloidal tracers with tunable phoretic mobility in order to quantify and disentangle the two effects. | Session 1: Active Colloids |
| 17 | Effect of particle shape in the transport of particles in microfluidic flows | SIVASANKAR, VISHAL SANKAR; Das, Siddhartha | Effect of particle shape in the transport of particles in microfluidic flows | Session 1: Active Colloids |
| 18 | The odd flows of an active chiral annulus | Jia, Leroy; Bililign, Ephraim; Balboa Usabiaga, Florencio; Shelley, Michael; irvine, william | Our work suggests that experimentally measuring the closure time could be a novel method of estimating this elusive parameter. | Session 1: Active Colloids |
| 19 | Active Motion of Low-symmetry Particles | Zhang, Liping; Wei, Qihuo | In the talk, we will present our recent research results on designing and fabricating colloidal particles of low symmetries, and our experimental studies of their active motions driven by electrohydrodynamic flows. | Session 1: Active Colloids |
| 20 | Optically-Powered Microscopic Bubble Rockets | Norris, Samantha; Reynolds, Michael; Cortese, Alejandro; McEuen, Paul | In this talk, we demonstrate a new optically-powered approach to catalyst-free bubble self-propulsion that works in a broad range of fluids, including deionized water. | Session 1: Active Colloids |
| 21 | Wall stiffness effects on the pressure of active rods | Pirhadi, Emad; Yong, Xin | To elucidate effects of wall stiffness on pressure, we introduce a mobile wall to the middle of the simulation box, which exerts asymmetric harmonic repulsions to rods on different sides. | Session 1: Active Colloids |
| 22 | Active Crystallization | Omar, Ahmad; Klymko, Katherine; GrandPre, Trevor; Geissler, Phillip | In this talk, we reveal that nearly the entirety of the MIPS phase boundary of three dimensional active Brownian particles is in fact metastable with respect order-disorder coexistence — the active crystallization transition. | Session 1: Active Colloids |
| 23 | Controlled Self-Assembly of Vortex in Ensembles of Active Magnetic Rollers | Sokolov, Andrey; Kokot, Gasper; Snezhko, Alexey | Here we present a method for guided self-assembly of ferromagnetic rolling particles energized by a uniform AC magnetic field into a stationary vortex via magnetic interaction with an additional strongly localized magnetic field. | Session 1: Active Colloids |
| 24 | Hybrid topology guides active matter in a stochastic circuit | Palacios, Lucas; Tchoumakov, Serguei; Guix, Maria; Pagonabarraga, Ignacio; Sánchez, Samuel; Grushin, Adolfo | In this work we follow an alternative approach to guide these artificial entities, based on the topology. | Session 1: Active Colloids |
| 25 | Equilibrium to off-equilibrium crossover in homogeneous active matter | Cavagna, Andrea; Di Carlo, Luca; Giardina, Irene; Grigera, Tomas; Pisegna, Giulia | We study the crossover between equilibrium and off-equilibrium dynamical universality classes in the Vicsek model near its ordering transition. | Session 2: Active Materials |
| 26 | ’Maxwell-Boltzmann’ velocity distribution for noninteracting active matter | Sandoval, Mario | We theoretically and computationally find a Maxwell-Boltzmann-like velocity distribution for noninteracting active matter (NAM). | Session 2: Active Materials |
| 27 | Controlling flows of an intra-droplet active fluid across droplet interface | Jolicoeur, Brock; Chen, Yen-Chen (Anderson); Chueh, Chih-Che; Wu, Kun-Ta | Here, we investigated how a fluid boundary influenced self-organization of confined active fluid by establishing a 3D COMSOL-based nemato-hydrodynamic simulation platform where active fluid was confined in a compressed cylindrical water-in-oil droplet. | Session 2: Active Materials |
| 28 | Existence of the B-Form DNA helix in nanoDNA liquid crystals and its variation due to aggregate assembly | Smith, Gregory; Fraccia, Tommaso; Zhernenkov, Mikhail; Clark, Noel | We show using diffraction of a synchrotron X-ray microbeam that liquid crystalline aggregates of 12mer nanoDNA, such as the Drew-Dickerson Dodecamer (DD), demonstrate a marked B-form DNA double-helix with only marginally less order than seen in longer DNA, such as the calf-thymus DNA used by Rosalind Franklin to produce the historic Photo 51. | Session 2: Active Materials |
| 29 | How to use fitting functions to estimate the diffusion coefficient of molecules in diffusion-controlled drug release systems | Slater, Gary; Ignacio, Maxime | We propose a unified approach to describe the solutions of the diffusion equation for spherically symmetric diffusion-controlled drug release systems. | Session 2: Active Materials |
| 30 | First-principles study of C & Mo sites vacancy defects in water adsorbed (HS) Graphene/MoS 2 materials | neupane, hari; Adhikari, Narayan | By structural analysis, we found that C & Mo atoms vacancy defects in w ad -(HS)G/MoS 2 are stable materials, also stability and compactness of these materials decreased with increase in their defects concentrations. | Session 2: Active Materials |
| 31 | Hydrodynamic Instabilities in Confined 3D Active Fluids | Varghese, Minu; Hagan, Michael; Baskaran, Aparna | Hydrodynamic Instabilities in Confined 3D Active Fluids | Session 2: Active Materials |
| 32 | A Low-Cost Platform for Studying Low-dimensional Active Matter | Thavone, Khamla; Vivek, Skanda; Tangirala, Sairam | Here, we built a model system for studying emergent collective behaviors from customizable, low-cost bristle-bots. | Session 2: Active Materials |
| 33 | Structural features and dynamical predictions in dense active packings | Giannini, Julia; Stanifer, Ethan; Manning, M Lisa | To address these shortcomings, we developed a novel theoretical and computational framework to study a class of packings formed by persistent self-propelled particles. | Session 2: Active Materials |
| 34 | Time-dependent propulsion of noninteracting inertial active stochastic particles | Gutierrez-Martinez, Luis L.; Sandoval, Mario | In this work, we propose a model in which active particles have non-negligible inertia (mass and moment of inertia) and a time-dependent periodic propulsion speed. | Session 2: Active Materials |
| 35 | Is fluid friction enough to counteract the active drive in ciliary oscillations? | Mondal, Debasmita; Adhikari, Ronojoy; Sharma, Prerna | We combine these experimental insights with theoretical modeling of active filaments to illustrate that ciliary oscillations indeed exist in the presence of internal friction as the sole source of dissipation. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 36 | Measuring the Stokes’ drag in a microtubule-kinesin active gel | Durey, Guillaume; Luo, Wan; Dalal, Shibani; Duclos, Guillaume; Pelcovits, Robert; Powers, Thomas; Breuer, Kenneth | Combined with theoretical and numerical frameworks, we present the statistics of the bead trajectories and develop the form of the Stokes drag for active media. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 37 | Phase diagram of microtubule and end-directed motor proteins | Dogic, Zvonimir; Lemma, Bezia; Mitchell, Noah; Subramanian, Radhika; Needleman, Daniel | Extensive efforts over the past few years have focused on understanding the non-equilibrium macroscale behaviors of filamentous biopolymers such as microtubules and actin filaments that are driven by associated molecular motors. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 38 | Bifurcations and the nature of transition to turbulence in active nematic channel flow | Wagner, Caleb; Norton, Michael; Park, Jae Sung; Grover, Piyush | In this work, we explore these states and the transitions between them in a 2D channel from a dynamical systems point of view using the nemato-hydrodynamic equations. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 39 | Liquid to Gel Transitions in 3D Active Networks | Najma, Bibi; Duclos, Guillaume | We are investigating the origin of self-amplifying deformations in 3D active networks composed of cytoskeletal filaments (microtubules), crosslinkers and molecular motors. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 40 | Confinement-induced flow patterns in microtubule-based active fluids | Jarvis, Edward | Here, we demonstrate two flow patterns induced by confinement. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 41 | Active self-organization and division of nematic droplets | Schwarzendahl, Fabian; Weirich, Kimberly; Ronceray, Pierre; Dasbiswas, Kinjal | We present a continuum model that accounts for the activity of myosin motors that slide actin filaments according to their polarity. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 42 | Biomimetic active droplets via enzymatically driven reactions | Testa, Andrea | Here, we introduce a model system to mimic the high crowding and metabolic rates found in living cytoplasm, while maintaining relatively simple compositions. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 43 | Elastically confined polar active filaments | Peterson, Matthew; Hagan, Michael; Baskaran, Aparna | We discuss simple scaling models that reveal the mechanisms underlying these emergent behaviors. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 44 | Dynamics of the cytokinetic ring during cell division | Chatterjee, Mainak; Chatterjee, Arkya; Nandi, Amitabha; Sain, Anirban | Within a continuum gel theory framework, we explore the coupled dynamics of the flow and the degree of alignment in the acto-myosin network (the order parameter). | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 45 | Emerging Periodic Behaviour in three-dimensional Active Nematics | Keogh, Ryan | In this talk, I will describe our recent simulations of three-dimensional active nematic flows in microfluidic channels. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 46 | Active nematics near walls | Doré, Claire; Hardoüin, Jérôme; Ignés-Mullol, Jordi; Sagués, Francesc; Lopez-Leon, Teresa | Here we show that geometrical confinement can be an effective means to achieve control on the dynamical defect configuration of an active system. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 47 | Interfacial dynamics of active microtubule nematics | Adkins, Raymond; Kolvin, Itamar; Witthaus, Sven; You, Zhihong; Marchetti, M Cristina; Dogic, Zvonimir | We developed an experimental system for studying the fluctuations of a soft interface between an active and passive fluid. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 48 | How fluid flows influence defect dynamics in active nematic films | Angheluta, Luiza; Bowick, Mark; Chen, Zhitao; Marchetti, M Cristina | Using the hydrodynamic description of active nematics, we derive how the defect velocity and the orientational dynamics of the defects depend on both fluid flow and flow-induced alignment. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 49 | Understanding mesoscopic consequences of microscopic driving in active nematics | Redford, Steven; Ruijgrok, Paul; Zemsky, Sasha; Molaei, Mehdi; Colen, Jonathan; Vitelli, Vincenzo; Bryant, Zev; Gardel, Margaret | Understanding mesoscopic consequences of microscopic driving in active nematics | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 50 | Confinement of active nematics using virtual boundaries imposed by submerged rectangular structures | Khaladj, Dimitrius; Gharbi, Mohamed Amine; Fraden, Seth; Hirst, Linda | In this work, we report phenomena where we introduce submerged retactangular structures, trenches and via microfabrication. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 51 | Optimal Braiding of Active Nematic Microtubule Defects on the Sphere | Smith, Spencer; Frasier, Ekaterina | In this study, we consider four +1/2 defects on a sphere. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 52 | Role of confinement in stabilizing 3D Active nematic droplets | Alam, Salman; Duclos, Guillaume | We study how the critical radius depends on the activity and nematic elasticity. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 53 | Tunable spontaneous circulation of microtubule-based active fluid confined in a compressed water-in-oil droplet using milli-fluidic devices | Chen, Yen-Chen (Anderson); Jolicoeur, Brock; Chueh, Chih-Che; Wu, Kun-Ta | We found that the formation of circulatory flows depended on the thickness of the oil layer surrounding the droplet, implying that the fluid dynamics between the active fluid within the droplet and the oil outside the droplet were coupled. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 54 | Defect dynamics on active nematic ellipsoids | Clairand, Martina; Mozaffari, Ali; Hardoüin, Jérôme; Zhang, Rui; Ignés-Mullol, Jordi; Sagués, Francesc; De Pablo, Juan; Lopez-Leon, Teresa | In the current work, we build biomimmetic structural units by coating ellipsoidal droplets of smectic liquid crystal with an active nematic obtained from a cytoskeletal gel. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 55 | Active Multi-Particle Collision Dynamics: Collision Operators for Coarse Grained Simulation of Active Nematic Liquid Crystals | Kozhukhov, Timofey; Shendruk, Tyler | In this work, we present collision operators which extend MPCD to active systems. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 56 | Theory of activity-powered interfacial fluctuations | You, Zhihong; Adkins, Raymond; Kolvin, Itamar; Witthaus, Sven; Dogic, Zvonimir; Marchetti, M Cristina | Motivated by experimental studies of the dynamics of active interfaces in microtubule-based active matter, we formulate a hydrodynamic model that describes the non-equilibrium fluctuations of soft interfaces observed in liquid-liquid phase separation. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 57 | Orientational Order of Active Nematic Defects: From Flat Space to Curved Geometries | Nambisan, Jyothishraj; Pearce, Daniel; Giomi, Luca; Fernandez-Nieves, Alberto | In this talk, we explain how we confine this system to flat 2D cells and shapes of varying Gaussian curvature, K, like ellipsoids and tori. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 58 | Design of Defect Dynamics and Flows in Active Liquid Crystal Systems | Zhang, Rui | In this talk, I will discuss several recent experimental and simulation efforts which demonstrate that nucleation and self-propulsion of defects can be manipulated through, for example, spatiotemporal patterning of activity. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 59 | Active Surfaces and Defect-Mediated Morphogenesis | Hoffmann, Ludwig; Giomi, Luca | We present an analytic theory describing the dynamics of an active surface, a two-dimensional deformable surface coupled to an active liquid crystal on the surface. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 60 | Active Cell Divisions Generate Four-Fold Orientational Order in Living Tissue | Cislo, Dillon; Qin, Haodong; Yang, Fengshuo; Bowick, Mark; Streichan, Sebastian | We uncover a four-fold orientationally ordered phase in the crustacean Parhyale hawaiensis and provide a quantitative profile of the tissue dynamics through which this order emerges. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 61 | Liquid-crystal organization of liver tissue | Morales-Navarette, Hernan; Nonaka, Hidenori; Scholich, Andre; Segovia-Miranda, Fabian; de Back, Walter; Meyer, Kirstin; Bogorad, Roman; Kotelianski, Victor; Brusch, Lutz; Kalaidizidis, Yannis; Julicher, Frank; Friedrich, Benjamin; Zerial, Marino | We computationally reconstructed 3D tissue geometry from microscopy images of mouse liver tissue and analyzed it using concepts from biaxial liquid crystal theory. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 62 | No large-scale demixing due to differences in diffusivity in a model for confluent tissues | McCarthy, Erin; Damavandi, Ojan; Manning, M. Lisa | In this study, we ask whether a similar demixing via diffusivity persists in a confluent model for biological tissue. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 63 | A microbial hare and tortoise story: interactions between topological defects in biofilms favour bacteria that move more slowly | Meacock, Oliver; Doostmohammadi, Amin; Foster, Kevin; Yeomans, Julia; Durham, William | Using cell tracking, active nematic theory, and simulations of self-propelled rods, we show that this phenomenon is caused by the behaviour of +1/2 topological defects within the collective. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 64 | Liquid crystal elastomer substrates with predesigned splay and bend to control growth and migration of fibroblast cells | Koizumi, Runa; Rajabi, Mojtaba; Kim, Min-Ho; Lavrentovich, O | This work demonstrates that the active force caused by gradients of the orientational order in tissues triggers polar migration of cells. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 65 | Confinement Discerns Swarmers from Planktonic Bacteria | CHEN, WEIJIE; Tang, Jay | Here, we show that when confined by microwells of specific sizes mounted on an agar surface, novel bacterium Enterobacter sp. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 66 | Topological defects patterns in monolayers of cells | Serra, Francesca | We can thus analyze the alignment of cells in the vicinity of the topological defects under different conditions and observe multiple possible solutions that the cells utilize to adapt to the boundaries. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 67 | Multi-scale multi-species modeling of emergent flows andactive mixing in confined bacterial swarms | Fylling, Cayce; Gopinath, Arvind; theillard, maxime | Here we present a new method for modeling such fluids under confinement. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 68 | Interaction of active droplets with director gradients in nematic liquid crystal | Baza, Hend; Wang, Yuhan; Lavrentovich, O | We use the plasmonic metamasks technique to pattern the director in a one-dimensionally periodic sequence of splay and bend deformations and in the form of defects, such as semi-integer singular disclinations and integer nonsingular disclinations. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 69 | Phase transitions in growing bacteria colonies at liquid interfaces | Langeslay, Blake; Juarez, Gabriel | We present a growing colony of motile E. coli at an oil-water interface in which system evolution can be directly and continuously observed using time-lapse microscopy over eight hours. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 70 | Space and time cluster tomography of active systems | Matoz Fernandez, Daniel; Edblom Dougherty, Sean Patrick; Blackwell, Brendan; Driscoll, Michelle; Kovacs, Istvan; Olvera De La Cruz, Monica | As an alternative, here we propose to perform cluster tomography in space and time by measuring the spatial gap size distribution 3 and inter-event time distribution 4 within particle clusters. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 71 | Global order and lane formation in Microtubule-based active matter | Memarian, Fereshteh; Lopes, Joseph; Hirst, Linda | In this project, we investigated MT-kinesin-based transportation by performing experiments using kinesin motors coupled to a lipid bilayer. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 72 | Active self-organization in actin cytoskeleton | Mirza, Waleed; Corato, Marco de; Sánchez, Alejandro; Arroyo, Marino; Caicoya, Guillermo | In this study, we use a continuum model to explain an out-of-equilibrium self-assembly of such regularly spaced actin bundles. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 73 | Active Matter Self-Organization Simulator (AMSOS): Combining biophysics and mechanics on HPC | Yan, Wen; Lamson, Adam; Ansari, Saad; Betterton, Meredith; Shelley, Michael | We use a new numerical method based on geometrically constrained optimization to guarantee that steric interactions and crosslinker binding forces between filaments are properly and efficiently handled. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 74 | Collective motion of vinegar eels: metachronal waves and induced flows | Peshkov, Anton; McGaffigan, Sonia; Wright, Esteban; Quillen, Alice | We experimentally study the collective motion of the free-swimming nematode Turbatrix Aceti also known as the vinegar eel. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 75 | Rotation and propulsion in 3D active chiral droplets | Negro, Giuseppe; Carenza, Livio Nicola; Gonnella, Giuseppe; Marenduzzo, Davide | Here we consider a system which is inherently chiral and apolar and that can be modelled – in the passive limit – as a Cholesteric Liquid Crystal. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 76 | Dynamical renormalizatin group approach to the collective behaviour of swarms | Cavagna, Andrea; Di Carlo, Luca; Giardina, Irene; Grigera, Tomas; Pisegna, Giulia | We study the critical behavior of a model with nondissipative couplings aimed at describing the collective behavior of natural swarms, using the dynamical renormalization group under a fixed-network approximation. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 77 | Linear stability analysis for asymmetric contraction of the cytokinetic ring | Chatterjee, Arkya; Chatterjee, Mainak; Nandi, Amitabha; Sain, Anirban | In a previous work [1], using a continuum gel theory framework in a weak flow coupling regime, we obtained exact analytical solutions for the quasi-static dynamics of the radially symmetric ring contraction. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 78 | Finite wave number instability interrupts motility-induced phase separation | MA, ZHAN; Ni, Ran | In this work, we formulate a continuum theory for cABPs, and the fluctuation dispersion relation reveals two types of instabilities, i.e. at low torque intensity, type I instability refers to the zero wave number starting unstable mode inducing the MIPS; for large enough torque, type II instability refers to the finite wave number starting unstable modes, which results in the dynamical clustering state and interrupts the conventional MIPS. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 79 | Active cholesterics and smectics are hydrodynamically distinct | Kole, Swapnil; Alexander, Gareth; Ramaswamy, Sriram; Maitra, Ananyo | We show theoretically that active cholesterics, by contrast, display striking signatures of chirality, and are thus qualitatively distinct from smectics, even in their asymptotic long-wavelength dynamics. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 80 | Emergent task-driven cooperation in ant collectives | S, Ganga Prasath; Mandal, Souvik; Giardina, Fabio; Murthy, Venkatesh; Mahadevan, L. | We find that ant collectives that have multiple castes are more efficient than those made of a single caste – and show how the task creates an emergent dynamic division of labor determined by the interaction with the environment that cuts across morphological and physiological distinctions. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 81 | Sparse Identification of Continuum Theories of 2D Active Nematics | Joshi, Chaitanya; Lemma, Linnea; Dogic, Zvonimir; Baskaran, Aparna; Hagan, Michael | In this work, we employ a recently developed method to automatically identify the optimal continuum models, along with their parameters, directly from the spatio-temporal director and velocity data, via sparse fitting of the coarse-grained fields on to generic low order PDEs. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 82 | Strategies for Collective Adaptive Workload Distribution in Varying Work Conditions | Aina, Kehinde; Kuan, Hui-Shun; Goldman, Daniel; Betterton, Meredith | In this work, we model how behavior changes if individual ants optimize an objective in a changing environment. | Session 3: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems |
| 83 | Clogging Dynamics of Active and Passive Disks in Complex Environments | Reichhardt, Cynthia; Reichhardt, Charles | We study the directional locking and clogging of passive disks and active run-and-tumble particles interacting with a periodic array of obstacles. | Session 4: Active Matter in Complex Environments |
| 84 | Breakdown of Ergodicity and Self-Averaging in Polar Flocks with Quenched Disorder | Duan, Yu; Mahault, Benoît; Shi, Xiaqing; Chate, Hugues | We show that quenched disorder affects polar active matter in ways more complex and far-reaching than believed heretofore. | Session 4: Active Matter in Complex Environments |
| 85 | Life in a tight spot: How bacteria move in porous media | Bhattacharjee, Tapomoy; Amchin, Daniel; Ott, Jenna; Kratz, Felix; Datta, Sujit | To address this gap in knowledge, we combine microscopy, materials fabrication, and microbiology to investigate how E. coli moves in 3D porous media. | Session 4: Active Matter in Complex Environments |
| 86 | Chemotaxis strategies of bacteria with multiple run modes in complex environments | Alirezaeizanjani, Zahra; Großmann, Robert; Pfeifer, Veronika; Hintsche, Marius; Beta, Carsten | Here, we discuss the chemotactic motion of the bacterium Pseudomonas putida as a model organism [2]. | Session 4: Active Matter in Complex Environments |
| 87 | Chemotaxis of cargo-carrying self-propelled particles | Vuijk, Hidde; Merlitz, Holger; Lang, Michael; Sharma, Abhinav; Sommer, Jens-Uwe | We show that self-propelled particles display chemotaxis and move into regions of higher activity, if the particles perform work on passive objects, or cargo, to which they are bound. | Session 4: Active Matter in Complex Environments |
| 88 | Active Matter Commensuration and Frustration Effects on Periodic Substrates | Reichhardt, Charles; Reichhardt, Cynthia | We show that self-driven particles coupled to a periodic obstacle array exhibit novel active matter commensuration effects that are absent in the Brownian limit. | Session 4: Active Matter in Complex Environments |
| 89 | Trapping in porous microstructure suppresses magnetotactic bacterial transport | Dehkharghani, Amin; Waisbord, Nicolas; Guasto, Jeffrey | Using microfluidic experiments complemented by Langevin simulations, we investigate the effect of porous microstructure and the role of disorder in dictating cell transport. | Session 4: Active Matter in Complex Environments |
| 90 | Enhanced bacterial motility in colloidal media | Kamdar, Shashank; Shin, Seunghwan; Kim, Youngjun; Francis, Lorraine; Cheng, Xiang | Here, we investigate the motility of E. coli, a flagellated bacterium, in colloidal media. | Session 4: Active Matter in Complex Environments |
| 91 | Emergence of collective states in suspensions of swimming bacteria in confined geometries | Ghosh, Dipanjan; Cheng, Xiang | Imaging these suspensions using bright-field microscopy, we observe the emergence of three distinct collective states, dependent on the density of bacteria and their swimming velocity: a disordered state, a state characterized by lanes with long-ranged orientational nematic order, and a state of swarming clusters with short-ranged polar order. | Session 4: Active Matter in Complex Environments |
| 92 | Attractors in disordered active matter and using disorder to control active matter | Peruani, Fernando | Attractors in disordered active matter and using disorder to control active matter | Session 4: Active Matter in Complex Environments |
| 93 | Separating Motile and Immotile Bacteria through Confined Chemotaxis | CHIU, SHANG-HUAN; Zumpano, Francesca; Lushi, Enkeleida | We will present a model that couples individual run-and-tumble bacterial motion to the chemical gradient while the entire colony is inside a circular confinement. | Session 4: Active Matter in Complex Environments |
| 94 | Aligning self-propelling particles in confinement | Lushi, Enkeleida; Wall, Katherine; Netznik, Nathaniel; Chiu, Shang-Huan | We present a model for self-propelling aligning particles and look at the collective motion for such swimmers in non-trivial confined domains. | Session 4: Active Matter in Complex Environments |
| 95 | Bacterial motion and spread in porous media | Almoteri, Yasser; Lushi, Enkeleida | We will present a continuum model that describes the collective dynamics of micro-swimmers such as bacteria through a porous wet material. | Session 4: Active Matter in Complex Environments |
| 96 | Nonequillibrium shape fluctuations and motility of a droplet enclosing active particles | Kokot, Gasper; Faizi, Hammad; Pradillo, Gerardo; Snezhko, Alexey; Vlahovska, Petia | We study the collective dynamics of the Quincke rollers in soft confinement by enclosing the rollers inside a liquid droplet sandwiched between two surfaces. | Session 4: Active Matter in Complex Environments |
| 97 | States of active nematics confined to annuli | Zarei, Zahra; Joshi, Chaitanya; . Norton, Michael; Hagan, Michael; Fraden, Seth | In this study, we investigate a 2D active nematic confined in an annulus in which the plus and minus half defects exhibit rich dynamical behavior. | Session 4: Active Matter in Complex Environments |
| 98 | Optimal navigation strategies for microswimmers on curved manifolds | Piro, Lorenzo; Tang, Evelyn; Golestanian, Ramin | We study this problem by building an analytical formalism for overdamped microswimmers on curved manifolds and arbitrary flows. | Session 4: Active Matter in Complex Environments |
| 99 | Slip and ypsotaxis of catalytically self-propelled particles near surfaces | Ketzetzi, Stefania; de Graaf, Joost; Kraft, Daniela | In this talk, I will demonstrate that the choice of the substrate material has a strong influence on the microswimmer speed through slippage [1]. | Session 4: Active Matter in Complex Environments |
| 100 | Spontaneous propulsion of an isotropic colloid in a phase-separating medium | Decayeux, Jeanne; Dahirel, Vincent; Illien, Pierre; Jardat, Marie | We consider an isotropic colloid in a bath of small solute particles. | Session 4: Active Matter in Complex Environments |
| 101 | Interplay of flow and swimmer’s polar orientation in confined active suspensions | Gulati, Paarth; Shankar, Suraj; Marchetti, M Cristina | We examine the dynamics of a continuum model of confined active bacterial suspensions where flows driven by active stresses are coupled to the tendency of microorganism to propel themselves along their orientation axis. | Session 4: Active Matter in Complex Environments |
| 102 | Unravel the transport and rotation properties of a squirmer in viscoelastic fluids | Qi, Kai; Corato, Marco de; Pagonabarraga, Ignacio | We study the rotational motion and transport peculiarities of a single swimmer in a viscoelastic fluid via Lattice Boltzmann (LB) simulations. | Session 4: Active Matter in Complex Environments |
| 103 | Viscoelasticity enables self-organization of bacterial active matter | Liu, Song; Shankar, Suraj; Marchetti, M Cristina; Wu, Yilin | Here we found that tuning the rheological properties of bacterial active fluids enables large-scale spatial and temporal self-organization. | Session 4: Active Matter in Complex Environments |
| 104 | Effective thermodynamic properties of inertial active microswimmers with alignment interaction | Karmakar, Soumen; Ganesh, Rajaraman | We demonstrate that the alignment dynamics bring in important changes in the effective thermodynamic-like features. | Session 4: Active Matter in Complex Environments |
| 105 | Dynamic structures in concentrated suspensions of spherical squirmers | Brumley, Douglas; Ishikawa, Takuji; Pedley, Timothy | This work suggests that lubrication theory, based on near-field interactions alone, contains most of the relevant physics, and successfully connects microscale structural features in the suspension with bulk rheological attributes. | Session 4: Active Matter in Complex Environments |
| 106 | Design principles for transport of vesicles by enclosed active particles | Uplap, Sarvesh; Hagan, Michael; Baskaran, Aparna | In this work, we seek to leverage these phenomena to identify design principles for optimal transport of flexible compartments that enclose active particles. | Session 4: Active Matter in Complex Environments |
| 107 | The dynamic steady-states of polar self-propelled filaments confined in 2D flexible vesicles | Ma, Yingyou; Baskaran, Aparna; Hagan, Michael | In this work we investigate the relationship between boundary and agent degrees of freedom, by simulating self-propelled semiflexible filaments confined within flexible vesicles in two dimensions. | Session 4: Active Matter in Complex Environments |
| 108 | Survival time of active Brownian particles on flat curves | Herrera, Pedro; Sandoval, Mario | We find the average time for an overdamped active Brownian particle (OABP) moving on any flat curve with metric, to first reach a given point on the curve (so called mean-first passage time, MFPT). | Session 4: Active Matter in Complex Environments |
| 109 | Spontaneous demixing of mixed active-passive suspensions | Jeanneret, Raphaël; Williams, Stephen; Tuval, Idan; Polin, Marco | We show that this can be used to induce the system to de-mix spontaneously. | Session 4: Active Matter in Complex Environments |
| 110 | Interaction of microswimmers with elastic interfaces | Nambiar, Sankalp; Wettlaufer, John | Simulations and theories have shown that microswimmers subject to confinement between parallel rigid boundaries exhibit an excess accumulation near the boundary; in turn, there is an associated enhancement of the active pressure forces on the wall. | Session 4: Active Matter in Complex Environments |
| 111 | Crowding-Enhanced Diffusion: An Exact Theory for Highly Entangled Self-Propelled Stiff Filaments | Mandal, Suvendu; Kurzthaler, Christina; Franosch, Thomas; Löwen, Hartmut | We predict a scaling theory for the effective diffusivity as a function of the Peclet number and the filament number density. | Session 4: Active Matter in Complex Environments |
| 112 | Dynamics of entangled active polymers | Tejedor, Andrés; Ramirez, Jorge | In this work, we extend the theory to consider the effect of an active force (drift) that drives the polymer along the tube in a certain direction. | Session 4: Active Matter in Complex Environments |
| 113 | Can activity in a suspension cause thickening or dethickening? | Ong, Edward; Liarte, Danilo; Griniasty, Itay; Ramaswamy, Meera; Ness, Christopher; Sethna, James; Cohen, Itai | We describe our investigations into the ability of active matter to tune shear thickening and jamming in colloidal suspensions. | Session 4: Active Matter in Complex Environments |
| 114 | Active colloidal gel | Wei, Mengshi; Ben Zion, Matan Yah; Dauchot, Olivier | At the microscopic level, we look into the short time vibrational dynamics and long-time dynamical correlations and analyze how they depend on the local structure of the gel. | Session 4: Active Matter in Complex Environments |
| 115 | Doping of a Sedimented Column of Passive Particles | Chen, Moyuan; Morin, Alexandre; Palacci, Jeremie | Here, we explore, via numerical experiments, the effect of active stirring by letting the active particle swim in a density gradient of passive particles, unveiling unexpected dynamics that warrant further investigations. | Session 4: Active Matter in Complex Environments |
| 116 | What can kinetic Monte Carlo do for active Matter? | Klamser, Juliane; Dauchot, Olivier; Tailleur, Julien | We focus on a kinetic MC version for the simplest kind of active matter: persistently moving, non-polar, interacting particles. | Session 4: Active Matter in Complex Environments |
| 117 | A reinforcement learning approach to optical control of active matter | Falk, Martin; Murugan, Arvind | Here, we apply a reinforcement learning approach; a reinforcement learning agent identifies time-varying patterns of a scalar activity parameter which induce net transport in a chosen direction in a simulated system of self-propelled spheres. | Session 4: Active Matter in Complex Environments |
| 118 | Energetics of critical oscillators in active bacterial baths | Roldan, Edgar; Gopal, Ashwin; Ruffo, Stefano | We investigate the nonequilibrium energetics near a critical point of a non-linear driven oscillator immersed in an active bacterial bath. | Session 4: Active Matter in Complex Environments |
| 119 | Swimming behavior of Paramecium in crowded environments | Escoubet, Nicolas; Brette, Romain; Prevost, Alexis; Pontani, Léa-Laetitia | Here, we report on extensive measurements of the trajectories of P aramecium t etraurelia in engineered environments with and without obstacles. | Session 4: Active Matter in Complex Environments |
| 120 | Using unsupervised machine learning to detect depinning and clustering transitions in active matter driven across quenched disorder | McDermott, Danielle; Reichhardt, Cynthia; Reichhardt, Charles | Using large-scale numerical simulations of active disks, we demonstrate that a machine learning order parameter can detect depinning transitions and different dynamic flow phases in systems driven far from equilibrium. | Session 4: Active Matter in Complex Environments |
| 121 | Modeling collective cell migration on substrates with topological defects | Kaiyrbekov, Kurmanbek; Sullivan, Kyle; Camley, Brian | In this work we perform 2D active Monte Carlo simulations to investigate cell arrangements and motion on a substrate patterned with ridges that induce a +1 defect. | Session 4: Active Matter in Complex Environments |
| 122 | Extracted Active Fluctuations from an Active-Passive Mixture Reveal the Dynamic Class of Active Materials | Shen, Chong; Ou-Yang, H Daniel | We developed a deconvolution method to extract the active fluctuations from that of a mixture. | Session 4: Active Matter in Complex Environments |
| 123 | Inverse Solidification Induced by Active Janus Particles | Misko, Vyacheslav | In contrast to this classical scenario, we demonstrate [1] a counter-intuitive occurrence of crystalline long-range order in an initially disordered matrix of passive colloidal particles accommodating chemically active defects – photocatalytic Janus particles (JP). | Session 4: Active Matter in Complex Environments |
| 124 | Slow Diffusion in Active Bath: Theoretical Description of the Activity-induced Energy Landscape | Chaki, Subhasish; Chakrabarti, Rajarshi | In this context, we have studied a prototype model for diffusion in an activity-induced rugged energy landscape to describe the dynamics of a tagged particle in a dense active environment. | Session 4: Active Matter in Complex Environments |
| 125 | First passage of an active particle in the presence of passive crowders | Biswas, Animesh; Cruz, J. M.; Parmananda, Punit; Das, Dibyendu | We experimentally study the stochastic transport of a self-propelled camphor boat, driven by Marangoni forces, through a crowd of passive paper discs floating on water. | Session 4: Active Matter in Complex Environments |
| 126 | Life in Complex Fluids | Arratia, Paulo | In this talk, I will discuss experimental and numerical results on the effects of fluid elasticity on the swimming behavior of microorganisms. | Session 4: Active Matter in Complex Environments |
| 127 | Local depletion of microswimmers in fluid flows due to rotational diffusion and tumbling | Berman, Simon; Buggeln, John; Solomon, Tom; Mitchell, Kevin | Here, we theoretically investigate the effect of stochastic swimmer reorientation in the presence of these one-way barriers. | Session 4: Active Matter in Complex Environments |
| 128 | Reversible depletion-driven capture of bacterial cells on non-adhesive surfaces | Niu, Wuqi | Here, we demonstrate how non-motile Escherichia coli (E. coli) are captured on polyethylene glycol (PEG) brush surfaces which are non-adhesive to E. coli on their own. | Session 4: Active Matter in Complex Environments |
| 129 | A generalized boundary reflection rule, funnel-shaped geometries, and rectification in systems with active boundaries | Anisetti, Vidyesh Rao; Schwarz, J. M. | Inspired by such examples, we investigate rectification in a system with funnel-shaped boundaries and with two different classes of reflection rules for randomly-moving particles colliding with the boundary; (θ reflect > θ incident and θ reflect < θ incident). | Session 4: Active Matter in Complex Environments |
| 130 | Conserved Quantities and Structural States in Active Systems | Shoham, Yuval | We analyze a few setups via theory and simulations, starting from two swimmers – showing that the angle between them is conserved, scaling up to several swimmers and eventually to a large collection of particles. | Session 4: Active Matter in Complex Environments |
| 131 | Self-organization and mixing of microtubule-kinesin active fluid in an activity gradient | Bate, Teagan; Wu, Kun-Ta | Here, we characterized active fluid behavior and its associated mixing performance in an activity gradient. | Session 4: Active Matter in Complex Environments |
| 132 | Engineering motile amoeboid cells toward targeted cell-mediated transport | Sharifi Panah, Setareh; Großmann, Robert; Nagel, Oliver; Lepro, Valentino; Beta, Carsten | Inspired by leukocytes, we propose to exploit the potential of eukaryotic cells as microtransporters, using D. discoideum cells. | Session 4: Active Matter in Complex Environments |
| 133 | Active Transport Dynamics with Wave-Based Interactions | Tarr, Steven; Castleman, Blake; Aydin, Enes; Goldman, Daniel | Inspired by the dynamics of small bouncing droplets interacting with obstacles via complex surface fluid waves, we study an 11.7 cm diameter circular robot fan boat in a 9 cm deep pool of water. | Session 4: Active Matter in Complex Environments |
| 134 | Active interfacial hydrodynamics | Thomson, Stuart; Harris, Daniel | Here we present two model systems where inertia plays a significant role: quasi-one-dimensional lattices of self-propelled millimetric droplets and hydrophobic chiral ratchets. | Session 4: Active Matter in Complex Environments |
| 135 | Surfing and crawling macroscopic active particles under strong confinement | Leoni, Marco; Paoluzzi, Matteo; Eldeen, Sarah; Estrada, Anthony; Ahmed, Wylie | We study two types of active (self-propelled) macroscopic particles under confinement: camphor surfers and hexbug crawlers, using a combined experimental, theoretical, and numerical approach. | Session 4: Active Matter in Complex Environments |
| 136 | Phenotyping photokinetic and excitable behaviours of single microswimmers in confinement | Bentley, Samuel; Anagnostidis, Vasileios; Laeverenz-Schlogelhofer, Hannah; Gielen, Fabrice; Wan, Kirsty | Here we present a novel microfluidic platform which can allow us to monitor single cells over unprecedented timescales. | Session 4: Active Matter in Complex Environments |
| 137 | The Influence of Flow on Capture and Growth of Rod-like E. coli on Cationic and Hydrophobic Surfaces | Xu, Zhou; Niu, Wuqi; Rivera, Sylvia; Siegrist, Sloan; Tuominen, Mark; Santore, Maria | In this work, we study the bacterial sense of surfaces to establish the new research area of sensory-based bacterial communication. | Session 4: Active Matter in Complex Environments |
| 138 | Trapped active toy robots: theory and experiment | Tapia-Ignacio, Cecilio; Gutierrez-Martinez, Luis L.; Sandoval, Mario | Trapped active toy robots: theory and experiment | Session 4: Active Matter in Complex Environments |
| 139 | Hydrogel Mineralization via Amorphous Precursors | Fu, Binxin; Lopez-Berganza, Josue A.; Lee, Ching-Wei; Rogers, Simon; Espinosa-Marzal, Rosa | Our aim is to mechanistically elucidate potential pathways that afford control of the mineralization pathway of hydrogels and of their microstructure, and yield composites with tunable mechanical response. | Session 5: Bio-mineralization, Hydration & Hardening in Colloidal Gels: Building Solid Materials out of Soft Gels |
| 140 | Compositional and structural gradients in dental enamel: from nano- to microscale | Joester, Derk | [1, 2, 3, 4] Here, I will report on the distribution of Mg 2+, Na +, F -, and CO 3 2- in the amorphous intergranular phase that cements together crystallites in human enamel. | Session 5: Bio-mineralization, Hydration & Hardening in Colloidal Gels: Building Solid Materials out of Soft Gels |
| 141 | The physics of cement cohesion: from soft colloidal gels to hardened cement hydrates | Del Gado, Emanuela | I will discuss how the interlocking of ions and water in confinement determines the net nanoscale cohesion and links cement hydration chemistry to the emerging physical properties of the material. | Session 5: Bio-mineralization, Hydration & Hardening in Colloidal Gels: Building Solid Materials out of Soft Gels |
| 142 | A quantitative approach to biomineralization and cement hydration, guided by (micro-)structural mechanics | Hellmich, Christian | Relations between biological systems and man-made structures ahve been intimately related since the dawn of the latter, and recent decades have seen these efforts being extended more and more towards emerging systems "hardening" out of an originally liquid environment. | Session 5: Bio-mineralization, Hydration & Hardening in Colloidal Gels: Building Solid Materials out of Soft Gels |
| 143 | Hierarchical porous materials: when 3D printing meets self-assembly | Studart, Andre | In this talk, I will show how 3D printing technologies can be combined with self-assembling building blocks to fabricate hierarchical porous materials with unprecedented mechanical efficiency and architectural control. | Session 5: Bio-mineralization, Hydration & Hardening in Colloidal Gels: Building Solid Materials out of Soft Gels |
| 144 | Critical Scaling of Compression-Driven Jamming of Frictionless Spheres | Teitel, Stephen; Peshkov, Anton | We numericaly study the jamming transition of athermal, overdamped, frictionless spheres in two and three dimensions, compressed isotropically at a fixed rate γ. | Session 6: Colloids and Granular Materials |
| 145 | Packings of superellipse sector particles | Cargile, Sykes; Kornick, Kellianne; Franklin, Scott; Brzinski, Ted | We use molecular dynamics simulations to characterize the internal structure and mechanical response of stable packings of SeSPs, as a function of particle geometry. | Session 6: Colloids and Granular Materials |
| 146 | Excluded area, entanglement, and packing of superellipse sector particles | Kornick, Kellianne; Brzinski, Ted; Franklin, Scott | Excluded area, entanglement, and packing of superellipse sector particles | Session 6: Colloids and Granular Materials |
| 147 | Dynamics of an intruder moving through a confined granular medium: Rescaled packing fraction yields data collapse for different intruder and system sizes. | Carlevaro, C. Manuel; Kozlowski, Ryan; Pugnaloni, Luis; Zheng, Hu; Socolar, Joshua; Basak, Rituparna; Cheng, Chao; Kondic, Lou | We consider an intruder dragged by a spring though a layer of bidisperse disks constrained in a fixed volume Couette cell in both discrete element simulations and experiments. | Session 6: Colloids and Granular Materials |
| 148 | Adjusting Images of a Conical Bead Pile through Linear Transformations | Wiles, Melita; Lehman, Susan | Any bead drop could trigger an avalanche, which we define as any number of beads leaving the pile. | Session 6: Colloids and Granular Materials |
| 149 | Physical mechanism of erythrocytes sedimentation rate | Darras, Alexis; Dasanna, Anil; Buvalyyy, Semen; John, Thomas; Wagner, Christian; Fedosov, Dmitry; Kaestner, Lars | We present detailed measurements of experimental ESR curves, and original micro- and mesoscopic pictures supporting this claim. | Session 6: Colloids and Granular Materials |
| 150 | Diffusiophoresis in drying colloidal blends: A powerful tool to control film architecture | Martin-Fabiani, Ignacio; Dong, Yichen; Tinkler, James; Tomovska, Radmila; Argaiz, Maialen; Scacchi, Alberto; Archer, Andrew; Sun, Tao | 1 In this talk, I will present our recent efforts to exploit this phenomenon to control the architecture of colloidal films. | Session 6: Colloids and Granular Materials |
| 151 | Particle-resolved topological defects of smectic colloidal liquid crystals in extreme confinement | Wittmann, Rene; Cortes, Louis; Löwen, Hartmut; Aarts, Dirk | Applying FMMT to hard discorectangles in two dimensions, we map out a full phase diagram. | Session 6: Colloids and Granular Materials |
| 152 | The ciliated structure as a particle detector | Thomazo, Jean-Baptiste; Le Reverrend, Benjamin; Pontani, Léa-Laetitia; Prevost, Alexis; Wandersman, Elie | We demonstrate that the dominant particle/fiber interaction arises from direct contacts of the particles with the fiber and we propose a simple elastohydrodynamics model to predict their amplitude. | Session 6: Colloids and Granular Materials |
| 153 | The Hydra String Method: A Novel Means to Explore Potential Energy Surfaces and its Application to Granular Materials | Moakler, Christopher; Newhall, Katherine | I will discuss an entirely different approach to understanding the complex behavior of granular materials, built on a novel method to find ensembles of pathways between stable packings of the system. | Session 6: Colloids and Granular Materials |
| 154 | Application of computational topology to analysis of granular material force networks in the stick-slip regime. | Basak, Rituparna; Cheng, Chao; Kozlowski, Ryan; Carlevaro, C. Manuel; Pugnaloni, Luis; Zheng, Hu; Socolar, Joshua; Kondic, Lou | We discuss the properties of force networks in a two-dimensional annular Couette geometry for both experiments and simulations in which a small intruder is pulled by a spring. | Session 6: Colloids and Granular Materials |
| 155 | Capture of particles by a flexible, granular envelope | Brzinski, Ted; Ferrigno, Colby; Bancroft, Katharine | We have developed a quasi-2D system that models this behavior: a granular chain in a dispersion of smaller, approximately circular particles. | Session 6: Colloids and Granular Materials |
| 156 | Traction Rheoscopy of Colloidal Glass | Terdik, Zsolt; Weitz, David; Spaepen, Frans | We introduce a new technique, traction rheoscopy, to directly measure the mechanical response of colloidal glasses while simultaneously visualizing microstructure. | Session 6: Colloids and Granular Materials |
| 157 | Spherically confined Brownian suspensions: influence of locally heterogenous structure on diffusion and rheology | Sunol, Alp; Zia, Roseanna | In this work, we perform dynamic simulations with both Confined Stokesian Dynamics and Confined Brownian Dynamics algorithms. | Session 6: Colloids and Granular Materials |
| 158 | Flash NanoPrecipitation of Ionomers for the Scalable Production of Pickering Emulsifiers | Scott, Douglas; Prud’homme, Robert; Priestley, Rodney | In this work, the FNP of homopolymers with ionomers is presented as a route for enhanced electrostatic stabilization and tunable expression of charge groups on particles for producing Pickering emulsifiers. | Session 6: Colloids and Granular Materials |
| 159 | Theory of transport of ions and macroions in heterogeneous polymer materials | Muthukumar, Murugappan | We have developed a general theory to describe transport of ionic species in disordered polymer materials by considering electrostatic binding/unbinding of mobile ions with the matrix. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 160 | Structure and Dynamics of Hydrated Precise Sulfophenylated Polyethylene Polymers from Simulation | Thurston, Bryce; Paren, Benjamin; Winey, Karen; Stevens, Mark; Frischknecht, Amalie | We study a precisely-spaced sulfophenylated polyethylene polymer (p5PhSA) in which sulfonate anions are covalently bound to the pendant phenyl groups and are neutralized by hydronium ions. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 161 | Heterogeneity in composition and dynamics in supercooled branched ionomers | Nguyen, Trung; Noe Umana Kossio, Han; Olvera De La Cruz, Monica | Using coarse-grained models and simulations, we characterize the thermal behaviors of these ionomers, and correlate them with the non-uniformity of the spatial distribution of monomer composition. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 162 | Weakening of solvation-induced ordering by composition fluctuation | Kong, Xian; Hou, Kevin; Qin, Jian | Following the standard Brazovskii treatment, we show that this weakened solvation may be partially caused by the composition fluctuation near the ordering transition. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 163 | Rotational Motion of Water Molecules Within the Polyelectrolyte Brush Layer Serving as a Soft and Active Nanoconfinement | Das, Siddhartha; Sachar, Harnoor; Pial, Turash; Chava, Bhargav | We perform an all-atom MD study to probe the rotational dynamics of water molecules inside densely grafted PE brushes. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 164 | Comparison of Ion Transport in Single-ion and Salt-doped Block Copolymers: A Coarse-grained Molecular Dynamics Study | Fan, Mengdi; Shen, Kuan-Hsuan; Hall, Lisa | Thus, in the series of materials studied here, the potential advantage of single-ion systems is only relevant in situations where ionic aggregation is a concern. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 165 | Structural and transport characteristics of battery electrolytes based on lithium poly(bis-nonenyl malonato borate) in carbonate solvents | Muralidharan, Ajay; Lytle, Tyler; Yethiraj, Arun | In this work, we report a simulation study based on a fully atomistic non-polarizable force field for Li poly-BNMB in carbonate solvents. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 166 | Transport mechanisms underlying ionic conductivity in nanoparticle-based single-ion electrolytes | Kadulkar, Sanket; Milliron, Delia; Truskett, Thomas; Ganesan, Venkatraghavan | In this work, we introduce a coarse-grained multiscale simulation approach to identify the mechanisms underlying the ion mobilities in nanoparticle-based single-ion conductors and to clarify the influence of key design parameters on conductivity. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 167 | Entropic localization of plasmids in nanofluidic compartments | Liu, Zezhou; Capaldi, Xavier; Zeng, Lili; Lamothe, Rodrigo; Reisner, Walter | Here, we present a nanofluidic device with compartments simulating the confinement induced by a cell membrane. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 168 | The relation between ion transport and relaxation dynamics in polymers | Reynolds, Matthew; Baker, Daniel; Magusin, Pieter; Olmsted, Peter; Mattsson, Johan | We here present work to help understand the decoupling between ionic transport and polymer dynamics. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 169 | Mechanisms of Ion Transport in Polymeric Ionic Liquids | Ganesan, Venkatraghavan | In this talk, I discuss some recent developments in the context of PILs trelating to the issue of ion transport in such materials.We focus on the mechanisms of ion transport in such materials, the influence of counterions, and whether such materials do live upto the promise of hgh transference numbers. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 170 | Effect of Interfacial Polymer Layer on Ion Transport in Hybrid Ceramic-Polymer Solid Electrolytes | Ferreira, Manuela; Zhu, Yingxi Elaine; Schmidt, Robert; Xu, Fan; Cai, Mei | In this work, we investigated the interaction of polyethylene oxide (PEO) based copolymer interfacial layer with both inorganic garnet-type LLZO ceramic and PEO electrolytes. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 171 | Impact of Frictional Interactions on Conductivity, Diffusion, and Transference Number in Ether- and Perfluoroether-Based Electrolytes | Grundy, Lorena; Shah, Deep; Balsara, Nitash | We use NMR and full electrochemical characterization in tetraglyme mixed with LiTFSI (H4) and in a fluorinated tetraglyme analog mixed with LiFSI (F4). | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 172 | Collective diffusion of nanoparticles and polyelectrolytes in confinement | Morozova, Svetlana; Hitimana, Emmanuel; Roopnarine, Brittany | To understand these complex phenomena, we have investigated dynamics of negatively-charged polystyrene particles and fluorescently labeled sodium polyacrylate in convex lens-induced confinement (CLiC). | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 173 | Effect of Molecular Weight on Self-Diffusion Dynamics and Viscoelasticity of Polymerized Ionic Liquids | Zhao, Qiujie; Evans, Christopher | This study provides a fundamental insight into the effect of molecular weight on dynamic properties of ionic polymer melts. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 174 | Mechanism of Ion Transport in Imidazolium Polymerized Ionic Liquids (PILs) Bearing a Polythiophene Backbone and in Dual Ionic Conductors of Polyfluorene Block Copolymers Doped with LiTFSI. | PIPERTZIS, ACHILLEAS; Papamokos, George; Muhlinghaus, Markus; Sachnik, Oskar; Mezger, Markus; Scherf, Ullrich; Floudas, George | Mechanism of Ion Transport in Imidazolium Polymerized Ionic Liquids (PILs) Bearing a Polythiophene Backbone and in Dual Ionic Conductors of Polyfluorene Block Copolymers Doped with LiTFSI. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 175 | Cation Transport in Ionic Layers of Sulfonated Crystalline Telechelic Polyethylenes | Paren, Benjamin; Haeussler, Manuel; Mecking, Stefan; Winey, Karen | We present a set of sulfonated telechelic polyethylene ionomers that demonstrate ion transport of metal cations within layered ionic aggregates in a crystalline polymer matrix. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 176 | Understanding the role of dynamic bonds on conductivity in dense polymer networks | Evans, Christopher; Jing, Brian; Shen, Chengtian; Zhao, Qiujie | We have investigated a series of ethylene oxide networks containing a range of permanent and dynamic crosslinks to understand the role of bond exchange on conductivity. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 177 | Utilizing ionic liquid networks to explore fundamental principles in soft electro-adhesion | Thomas, Elayne; Kim, Hyeong; McBride, Matthew; Hayward, Ryan; Crosby, Alfred | We present a predictive model for electro-adhesion that captures the force capacity as a function of voltage, elastic modulus, interfacial dimensions, and sample thickness. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 178 | Ionic Conductivity Enhancement Through Directed Crystallization Polymer Electrolytes | Liu, Changhao; Tang, Xiaomin; Wang, Yangyang; Keum, Jong; Chen, Xi | Our goal here is to improve the conductivity of PE through directed crystallization. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 179 | Ion Dynamics in Ionic Liquids Polymerized in situ within Silica Nanopores | Kinsey, Thomas; Sangoro, Joshua | In this talk, we will show that the in-situ polymerization of the vinyl cationic monomer, 1-ethyl-3-vinylimidazolium with the bis(trifluoromethanesulfonyl)imide counter anion, under nanoconfinement within 7.5 (± 1.0) nm diameter nanopores results in a nearly 1000-fold enhancement in the ionic conductivity compared to the material polymerized in bulk. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 180 | Effect of Pore Topology on Ionic Conductivity in Hybrid Electrolytes | Keshishian, Vazrik; Beg, Cameran; Kieffer, John | The strong correlation between the adiabatic elastic modulus and the activation energy of ion hopping has led to developing an improved transition state theory model for this process, which we use to develop materials design strategies for harnessing this structural conditioning and create better performing SSE. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 181 | Gyroid Morphologies in Single-ion Conducting Multiblock Copolymers: A Phase Diagram and Efficient Ion Transport | Park, Jinseok; Staiger, Anne; Mecking, Stefan; Winey, Karen | We investigated the nanoscale morphologies and ionic conductivities of polyethylene-based multiblock copolymers as single-ion conducting polymers. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 182 | Role of chain architecture and composition on dynamics and ionic solvation in polyether-based electrolytes | Bennington, Peter; DENG, CHUTING; Sharon, Daniel; Webb, Michael; De Pablo, Juan; Nealey, Paul; Patel, Shrayesh | We have compared the conductivity, ionic interactions, and polymer dynamics of a series of graft polyethers using a combination of impedance spectroscopy, vibrational spectroscopy, and atomistic scale molecular dynamics (MD). | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 183 | Hydroxide conducting block copolymers | Elabd, Yossef | In this work, an overview of hydroxide ion transport (a property that is proportional to fuel cell performance) in block copolymers will be presented and the subsequent impact of block copolymer morphology on ion transport (conductivity), where the careful design of block copolymer chemistry and chain architecture can accelerate hydroxide ion transport and subsequently alkaline fuel cell performance. | Session 7: Confinement, Dynamics, and Ion Interactions in Ion-Containing Polymers |
| 184 | Stokesian Dynamics of Arbitrary-Shape Passive and Active Particles in Linear Flow: Constraint and Rigid Body Approaches | Kutteh, Ramzi | We describe both extended approaches and show SD simulations results from each. | Session 8: DSOFT 2020 Prize Session |
| 185 | Self-assembly of Colloidal Superballs Under Uniform Compression | Schyck, Sarah; Meijer, Janne-Meike; Baldauf, Lucia; Petoukhov, Andrei; Schall, Peter; Rossi, Laura | We identify and observe structure formation before a transition point that arises due to particle dewetting. | Session 8: DSOFT 2020 Prize Session |
| 186 | Formation of a stable colloidal quasicrystal with negligible phason strain | Je, Kwanghwi; Lee, Sangmin; Engel, Michael; Glotzer, Sharon | Here, we study the formation of a colloidal dodecagonal quasicrystal (DQC) in a hard tetrahedron system via Monte Carlo simulations. | Session 8: DSOFT 2020 Prize Session |
| 187 | Phase transitions in colloids under microgravity | Khusid, Boris; Lei, Qian; Kondic, Lou; Chaikin, Paul; Hollingsworth, Andrew; Reich, Alton; Meyer, William | Phase transitions in colloids under microgravity | Session 8: DSOFT 2020 Prize Session |
| 188 | Determining the size of individual colloidal hard spheres from tracking information | Jensen, Chris; Binder, Brianna; Watson, Ryan; Coburn, J. corwin; Jensen, Katharine | In this work, we present a new, efficient approach to measuring individual particle radii using linear programming to solve a system of equations derived from closest approach data. | Session 8: DSOFT 2020 Prize Session |
| 189 | Probing the "cage effect" in grain boundary dynamics using impurity particles in a 2D colloidal crystal | Chen, Ya; Tan, Xinlan; Wang, Huaguang; Zhang, Zexin; Kosterlitz, John; Ling, Xinsheng | Here, we study the dynamics of grain boundaries in a 2D colloidal crystal of monodispersed microspheres doped with impurities of ellipsoidal particles. | Session 8: DSOFT 2020 Prize Session |
| 190 | 2D isotropic-nematic transition in colloidal magnetic ellipsoids | Tan, Xinlan; Chen, Ya; Wang, Huaguang; Zhang, Zexin; Ling, Xinsheng | Here we report a colloidal system composed of paramagnetic anisotropic particles that can overcome the free energy barrier from the metastable states towards the equilibrium phase by applying an external magnetic field. | Session 8: DSOFT 2020 Prize Session |
| 191 | Particle Size Disparity Controls Stacking Disorder in Colloidal Assemblies | Reinertsen, Roger; Kewalramani, Sumit; Ehlen, Ali; Olvera De La Cruz, Monica; Bedzyk, Michael | Using electrolytes to assemble such particles, we analyze size-dispersity effects by tuning: 1. | Session 8: DSOFT 2020 Prize Session |
| 192 | Flow-induced exfoliation of graphene: understanding colloidal microphysics to produce graphene on the ton scale | Botto, Lorenzo | In this talk I will describe our recent work on the theoretical and computational modelling of liquid-phase exfoliation of graphene/graphite, and discuss how our work differ from related investigation on hydrodynamic breakup of colloidal aggregates. | Session 8: DSOFT 2020 Prize Session |
| 193 | Early Career Award for Soft Matter Research (2020): Molecular Mimetic Colloids: synthesis and assembly. | Sacanna, Stefano | In this talk, I will break down and categorize the wide selection of colloidal reactions available by using an analogy to synthetic chemistry, helping to index and navigate the ever-expanding colloidal toolbox. | Session 8: DSOFT 2020 Prize Session |
| 194 | The stresslet for colloidal suspensions confined in a spherical cavity | Gonzalez Gonzalez, Emma del Carmen; Zia, Roseanna | Here we present the exact solution for stresslet hydrodynamic functions of a colloid in a spherical cavity, and its application to more concentrated suspensions via the Confined Stokesian dynamics algorithm. | Session 8: DSOFT 2020 Prize Session |
| 195 | Binary colloidal mixture with maximum packing density | Kim, Hyo Eun; Weon, Byung Mook; Jeong, Woojun; OH, GUN | We show a method to achieve maximized packing density with polydisperse binary mixtures for applications into advanced colloidal nanoinks. | Session 8: DSOFT 2020 Prize Session |
| 196 | Early Career Award for Soft Matter Research (2021): How a functional distribution network builds itself | Katifori, Eleni | To address this apparent paradox, we solve for the solute distribution in a distribution network, and add “equiperfusion”, the equal distribution of nutrients to the “mechanical” objective functions of dissipation and building cost. | Session 9: DSOFT 2021 PRIZE session |
| 197 | Flow-driven orientational self-organization of the bronchial epithelium | Gsell, Simon; Loiseau, Etienne; D’Ortona, Umberto; Favier, Julien; Viallat, Annie | In this work, we show that in-vitro reconstituted human bronchial epithelia exhibit active orientational self-organization driven by the mucus-cilia coupling. | Session 9: DSOFT 2021 PRIZE session |
| 198 | Wavelength selection by interrupted coarsening in reaction-diffusion systems | Brauns, Fridtjof; Weyer, Henrik; Halatek, Jacob; Yoon, Junghoon; Frey, Erwin | We derive a general coarsening criterion and show that coarsening is generically uninterrupted in two-component systems that conserve mass, independently of the specific form of the reaction term. | Session 9: DSOFT 2021 PRIZE session |
| 199 | Curved crack patterns by drying bacteria suspensions | Ma, Xiaolei; Liu, Zhengyang; Lin, Tianyi; Qiao, Yiming; Cheng, Xiang | We use wild-type E. coli with run-and-tumbling motions and mutant E. coli of tumblers in our experiments. | Session 9: DSOFT 2021 PRIZE session |
| 200 | Tradeoffs between energy efficiency and mechanical response in fluid flow networks | Fancher, Sean; Katifori, Eleni | By linearizing the Navier-Stokes equation, we show that while this imparted pulsatility necessarily increases the dissipation of energy caused by the resistance, the vessel elasticity helps to reduce overall dissipation by attenuating the amplitude of the pulsatile components of the flow. | Session 9: DSOFT 2021 PRIZE session |
| 201 | Odd Transport in Active Fluids | Hargus, Cory; Epstein, Jeffrey; Mandadapu, Kranthi | In this talk, we describe how the statistical mechanical origins of odd viscosity are encapsulated in a set of Green-Kubo relations, which we verify in simulations of a model fluid composed of self-rotating active dumbbells. | Session 9: DSOFT 2021 PRIZE session |
| 202 | Optimal transport of an active drop | Shankar, Suraj; Raju, Vidya; Mahadevan, L. | Within the lubrication approximation, we use optimal control theory to pose and solve the problem of transporting such a drop with minimal expenditure of mechanical work. | Session 9: DSOFT 2021 PRIZE session |
| 203 | Are non-dissipative hydrodynamic equations necessarily Hamiltonian? | Monteiro, Gustavo; Ganeshan, Sriram; Abanov, Alexander | We consider the most general isotropic Galilean invariant fluid dynamics with momentum and particle density conservation. | Session 9: DSOFT 2021 PRIZE session |
| 204 | Time-reversal symmetry breaking and odd viscosity in active fluids | Epstein, Jeffrey; Hargus, Cory; Klymko, Katherine; Mandadapu, Kranthi | We argue that the standard discussion of the connection of odd viscosity to time-reversal symmetry breaking involves a mistaken application of Onsager’s reciprocal relations, and provide a derivation that circumvents this issue by directly applying Onsager’s regression hypothesis. | Session 9: DSOFT 2021 PRIZE session |
| 205 | Pattern formation in active model C: bands, aster networks, and foams | Maryshev, Ivan; Frey, Erwin | We study the dynamics of pattern formation in a minimal model for active mixtures made of biofilaments and molecular motors. | Session 9: DSOFT 2021 PRIZE session |
| 206 | Flow-driven vascularization in soft frangible materials | Chakrabarti, Aditi; Prasath, S Ganga; Mahadevan, L. | Here, we use flow induced channelization in a crosslinkable gel to enable the controlled formation of synthetic vasculature in soft frangible tissue-like materials. | Session 9: DSOFT 2021 PRIZE session |
| 207 | DSOFT Business Meeting | DSOFT Business Meeting | Session 10: DSOFT Business Meeting | |
| 208 | DSOFT/GSNP Short Course: Introduction to Topological Data Analysis | Algebraic topology gives a framework to rigorously and quantitatively describe the global structure of a space, and the idea of topological data analysis (TDA) allows one to do this with empirical data (from either models or experiments), rather than simply with abstract mathematical spaces. | Session 11: DSOFT/GSNP Short Course: Introduction to Topological Data Analysis | |
| 209 | The role of deformability in determining mobility in thermal and active liquids | Cheng, Yuxuan; Treado, John; Wang, Dong; Shattuck, Mark; O’Hern, Corey | To understand and predict the mobility of non-spherical, deformable particles, we compare the mobility of rigid versus deformable, non-spherical particles driven by active forces and thermal fluctuations, which allows us to disentangle the roles of shape and deformability in determining particle transport. | Session 12: Deformable Particles in Soft Materials |
| 210 | Adhesion tunes the elasto-plastic response of biomimetic emulsions under mechanical constraint. | Golovkova, Iaroslava; Montel, Lorraine; Wandersman, Elie; Prevost, Alexis; Bertrand, Thibault; Pontani, Léa-Laetitia | We study how cell-cell adhesion controls the behavior of tissues under mechanical constraint. | Session 12: Deformable Particles in Soft Materials |
| 211 | Vibrational Modes in Packings of Deformable Particles | Wang, Dong | In this work, we numerically study the vibrational modes in packings of deformable particles in two dimensions, as a function of the shape parameter A = p 2/(4πa), where p is the perimeter and a is the area of the particle. | Session 12: Deformable Particles in Soft Materials |
| 212 | From adaptive self-assembly to avalanching instabilities in driven soft-granular matter. | Guzowski, Jan; Buda, Robert; Costantini, Marco; Garstecki, Piotr; Stone, Howard | We use microfluidics to generate monodisperse droplet structures and superstructures such as linear chains, multi-chains or chains with recurring folds adapting to the external flow. | Session 12: Deformable Particles in Soft Materials |
| 213 | Soft particles facilitate flow of rigid particles in a 2-D hopper | Alborzi, Saeed; Hashmi, Sara | We study the flow of binary mixtures of particles in a two-dimensional hopper, mixing rigid plastic spheres with elastic, deformable ones. | Session 12: Deformable Particles in Soft Materials |
| 214 | Gelation of cells during the development of leaf and flower mesophyll tissue | Treado, John | We investigate the effect of cell deformability and cell-cell adhesion on how maximally porous a system can become before losing rigidity. | Session 12: Deformable Particles in Soft Materials |
| 215 | Clogging of soft particles in 2D hoppers | Tao, Ran; Weeks, Eric | We experimentally study the flow of soft particles through quasi-two-dimensional hoppers. | Session 12: Deformable Particles in Soft Materials |
| 216 | Solid-liquid transitions in active multi-phase field models of biological tissue | Hopkins, Austin; Chiang, Michael; Loewe, Benjamin; Marenduzzo, Davide; Marchetti, M Cristina | More recently, multi-phase field models of cells as motile and deformable particles have been proposed as versatile tools that can describe both confluent and non-confluent tissue, while independently varying cell density, cell motility and the nature of cell-cell interactions. | Session 12: Deformable Particles in Soft Materials |
| 217 | Motility-induced phase separation of deformable particles | Loewe, Benjamin; Marenduzzo, Davide; Marchetti, M. Cristina | In this work, we employ a multi-phase field model to study MIPS in assemblies of deformable particles in two dimensions and quantify how deformability alters the phase diagram. | Session 12: Deformable Particles in Soft Materials |
| 218 | Free energy calculations on the stability of polymer-grafted nanoparticle superlattices | Li, Dingning; Zhang, Kai | We apply molecular dynamics simulation to compute the free energy cost of compressing isolated spherical PGNPs into Wigner-Seitz polyhedrons that can tile three-dimensional space. | Session 12: Deformable Particles in Soft Materials |
| 219 | Solvent vapor annealing of diblock copolymer thin films with a solvent mixture | Papadakis, Christine; Jung, Florian; Berezkin, Anatoly; Posselt, Dorthe; Smilgies, Detlef | We used a setup with two bubblers to investigate thin films from a cylinder-forming polystyrene- block-poly(dimethylsiloxane) (PS- b-PDMS) diblock copolymer in mixtures of the vapors of toluene, which is nearly non-selective for the PS matrix and the PDMS cylinders, and n-heptane, which is selective for PDMS [1]. | Session 13: Developments in Reflectivity for Thin Film Characterization |
| 220 | Introducing the CANDOR polychromatic reflectometer | Hoogerheide, David; Grutter, Alexander; Maranville, Brian; Majkrzak, Charles | In this talk, I will describe the instrument features of CANDOR and compare its performance to that of conventional reflectometers. | Session 13: Developments in Reflectivity for Thin Film Characterization |
| 221 | Characterization of anisotropic organic layered films by resonant soft x-ray reflectivity | Pasquali, Luca; Capelli, Raffaella; Bonfatti, Matteo; Mezzadri, Francesco; Galligani, Emanuele; Verna, Adriano; Ruocco, Alessandro; Mahne, Nicola; Nannarone, Stefano | In particular, we developed a protocol to get simultaneous quantitative information on the structure, interface morphology, chemical properties and optical anisotropies of layered organic materials with sub-nm depth resolution. | Session 13: Developments in Reflectivity for Thin Film Characterization |
| 222 | Probing Buried Interfaces in Polymers with Soft X-ray Reflectivity | Sunday, Daniel; Thelen, Jacob; Zhou, Chun; Ren, Jiaxing; Kline, R. Joseph; Nealey, Paul | This technique is applied to two systems of BCP multilayers with different affinities for a surface. | Session 13: Developments in Reflectivity for Thin Film Characterization |
| 223 | Development of spin-contrast-variation neutron reflectometry for structural analysis of multilayer films | Kumada, Takayuki; Akutsu, Kazuhiro; Miura, Daisuke; Suzuki, Jun-ichi; Torikai, Naoya | The spin-contrast-variation neutron reflectometry technique was developed for the structural analysis of multilayer films. | Session 13: Developments in Reflectivity for Thin Film Characterization |
| 224 | Information Content and Experimental Design in Neutron Reflectometry | Heinrich, Frank | We have introduced a quantitative framework to determine the gain in information from neutron reflectometry (NR) experiments using information theory and Bayesian statistics [1]. | Session 13: Developments in Reflectivity for Thin Film Characterization |
| 225 | Determining Lamellar Structure with Soft X-ray Reflectivity | Loo, Whitney; Feng, Hongbo; Sunday, Daniel; Nealey, Paul | We have devised a model block copolymer system to systematically tune χ through use of modular A- b-(B- r-C) copolymers. | Session 13: Developments in Reflectivity for Thin Film Characterization |
| 226 | Depth profiling molecular orientation with polarized resonant soft X-ray reflectivity | Ferron, Thomas; Thelen, Jacob; Bagchi, Kushal; Fiori, Marie; Ediger, Mark; DeLongchamp, Dean; Sunday, Daniel | Here we will discuss progress in developing polarized resonant soft X-ray reflectivity (P-RSoXR) for molecular orientation depth profiling in soft matter thin-films. | Session 13: Developments in Reflectivity for Thin Film Characterization |
| 227 | Probing interactions at the polymer thin film/substrate interface using Kelvin probe force microscopy | Wenderott, Jill; Dong, Ban; Amonoo, Jojo; Green, Peter | Here, we utilized Kelvin probe force microscopy (KPFM) to better understand interactions at the polymer thin film/substrate interface. | Session 13: Developments in Reflectivity for Thin Film Characterization |
| 228 | Why phonon scattering in glasses is universally small at low temperatures | Carruzzo, Herve; Yu, Clare | We present a novel view of the standard model of tunneling two level systems (TLS) to explain the puzzling universal value of a quantity, C ~ 3 x 10 -4, that characterizes phonon scattering in glasses below 1 K as reflected in thermal conductivity, ultrasonic attenuation, internal friction, and the change in sound velocity. | Session 14: Disordered and Glassy Systems (Non-Polymeric) |
| 229 | Transport and Elastic Properties of Dispersions of Hard Particles at Jamming | Skolnick, Murray; Torquato, Salvatore | We treat our generated jammed packings as dispersions of particles embedded in a matrix phase. | Session 14: Disordered and Glassy Systems (Non-Polymeric) |
| 230 | Avalanche statistics at the yielding transition of amorphous solids: universality in elastoplastic models | Ferrero, Ezequiel | I introduce the case of EPMs with stress-dependent transition rates for local yielding [2], showing that "dynamical" exponents might depend on the model details while universality stands robust for "static" critical exponents; in particular, for the exponents for the avalanche size distribution P( S)∼ S −τS f( S/ L df) and the those describing the density of sites at the verge of yielding, which is found to be of the form P( x)≈ P(0)+ x θ with P(0)∼ L −dΦ controlling the extremal statistics [3]. | Session 14: Disordered and Glassy Systems (Non-Polymeric) |
| 231 | Correlated crackling and avalanches during slow relaxation of crumpled sheets | Friedman, Yaniv; Lahini, Yoav | To address this hypothesis, we present a statistical analysis of the correlated crackling and avalanches in four different experimental protocols – logarithmic relaxation under load, Kovacs-like memory retention under load switching, cyclic strain training and unconstraint spontaneous expansion of the sheet. | Session 14: Disordered and Glassy Systems (Non-Polymeric) |
| 232 | Stability and Degrees of Freedom | Faghir Hagh, Varda; Corwin, Eric; Manning, M Lisa; Liu, Andrea; Nagel, Sidney | We introduce new protocols for creating stable jammed packings that work by first introducing and then subsequently removing degrees of freedom such as particle size or interparticle stiffness. | Session 14: Disordered and Glassy Systems (Non-Polymeric) |
| 233 | Visualizing Gardner-like effects in the transition from transient to persistent contacts in experiments on granular crystals. | Kool, Lars; Charbonneau, Patrick; Daniels, Karen | We present an experimental study of the conservation of particle contacts as a function of φ, for a nearly perfect bi-disperse granular crystal of photo-elastic discs. | Session 14: Disordered and Glassy Systems (Non-Polymeric) |
| 234 | Singularities in Hessian element distributions of amorphous media | V. Krishnan, Vishnu; Karmakar, Smarajit; Ramola, Kabir | We show that the distribution of elements H in the Hessian matrices associated with amorphous materials exhibit singularities P(H) ∼ |H|γ with an exponent γ < 0, as |H| → 0. | Session 14: Disordered and Glassy Systems (Non-Polymeric) |
| 235 | Impacts of bi-layered elastic projectiles | D’ANGELO, Christophe; Celestini, Franck; Raufaste, Christophe | A theoretical model is proposed to account for the specific geometry of the problem and considers both the Hertz contact and the elastic waves propagation inside the soft layer. | Session 14: Disordered and Glassy Systems (Non-Polymeric) |
| 236 | Measuring Structure and Dynamics of Nanoparticle Surfactant Assemblies at Liquid-Liquid Interfaces | Fink, Zachary; Kim, Paul; Zhang, Qingteng; Narayanan, Suresh; Aloni, Shaul; Hoagland, David; Russell, Thomas | To augment XPCS results we are developing an LTEM approach to directly observe the spatial and temporal NP rearrangements in real time using a step emulsification flow cell. | Session 14: Disordered and Glassy Systems (Non-Polymeric) |
| 237 | Internal Loss in Sticky Crumpled Matter | Croll, Andrew; Elder, Theresa; Jayawardana, Wathsala | In this work we explore the details of this relation in greater depth, through confocal microscopy and compression testing of thin, sticky, crumpled polymer films. | Session 14: Disordered and Glassy Systems (Non-Polymeric) |
| 238 | Theory of enhanced logarithmic Rayleigh scattering in amorphous solids with long-ranged power-law correlated disorder in elasticity | Cui, Bingyu; Zaccone, Alessio | Theory of enhanced logarithmic Rayleigh scattering in amorphous solids with long-ranged power-law correlated disorder in elasticity | Session 14: Disordered and Glassy Systems (Non-Polymeric) |
| 239 | Characterizing Individual Shear Defects in Colloidal Glasses | Duncan, Aidan; Terdik, Zsolt; Svetlizky, Ilya; Curatolo, Agnese; Brenner, Michael; Spaepen, Frans; Jensen, Katharine | We directly identify individual “shear defects” or “shear transformation zones” (STZs) as they are activated in the glass, by cross-correlating the measured local strain field with that predicted for Eshelby inclusions. | Session 14: Disordered and Glassy Systems (Non-Polymeric) |
| 240 | Avalanche statistics of a moving contact line | YAN, Caishan; Guan, Dongshi; Wang, Yin; Lai, Pik-Yin; Chen, Hsuan-Yi; Tong, Penger | Here we report avalanche statistics of a moving contact line (CL) formed on a vertical hanging fiber, which is driven through a liquid-air interface by an atomic-force-microscope (AFM) cantilever. | Session 14: Disordered and Glassy Systems (Non-Polymeric) |
| 241 | Phase-Separation, Gelation, and Dynamics of Associative Polymers | Danielsen, Scott; Rubinstein, Michael | An equilibrium theory for reversible network formation in two-component solutions of associative polymers is presented to account for the phase behavior and ‘sticky’ dynamics due to hydrogen bonding, metal–ligand, electrostatic, or other pairwise associative interactions. | Session 15: Dynamic Polymer Networks |
| 242 | Experimental test of the bond lifetime renormalization model in telechelic associating polymers | GE, SIRUI; Tress, Martin; Samanta, Subarna; Xing, Kunyue; Cao, Peng-Fei; Saito, Tomonori; Sokolov, Alexei | The bond lifetime renormalization model offers an interpretation of this effect. | Session 15: Dynamic Polymer Networks |
| 243 | New model for physical bond breaking in associating copolymer liquids | Ghosh, Ashesh; Schweizer, Kenneth | We combine ideas from polymer and glass physics to construct a new model for the mean bond breaking time scale of attractive sticker groups in associating copolymer liquids that form transient networks. | Session 15: Dynamic Polymer Networks |
| 244 | Mechanical Reinforcement by Interfacial Layer in Phase-separating Associating Telechelic Polymers | Samanta, Subarna; GE, SIRUI; Tress, Martin; Li, Bingrui; Xing, Kunyue; Cao, Peng-Fei; Sokolov, Alexei | Using the interfacial layer model (ILM) analysis, we find that shear modulus of this interfacial polymer layer is ~100 MPa. | Session 15: Dynamic Polymer Networks |
| 245 | Temperature Response of Endo/Exo Crosslinking in Diels-Alder Polymer Networks | Zhou, Qing; Sang, Zhen; Rajagopalan, Kartik Kumar; Gardea, Frank; Sukhishvili, Svetlana | We will discuss thermodynamic and kinetic aspects of endo vs. exo isomeric attachments in Diels-Alder (DA) polymer networks. | Session 15: Dynamic Polymer Networks |
| 246 | Dialkylamino Disulfide Chemistry: A Simple, Robust Catalyst-Free Chemistry for Dynamic Covalent Polymer Networks Exhibiting Full Cross-Link Density Recovery after Recycling and Excellent Creep Resistance at Elevated Temperature. | Bin Rusayyis, Mohammed; Torkelson, John | Here, we present a simple one-step method to design a bifunctional bis(dialkylamino) disulfide cross-linker that can be used in the synthesis of DCPNs from any monomers or polymers that can undergo free radical polymerization without need for external catalyst. | Session 15: Dynamic Polymer Networks |
| 247 | Filament Nucleation Tunes Mechanical Memory in Active Polymer Networks | Yadav, Vikrant; Banerjee, Deb; Tabatabai, Alan; Kovar, David; Kim, Taeyoon; Banerjee, Shiladitya; Murrell, Michael | We find that nucleation of F-actin mediates the accumulation and dissipation of polymerization-induced F-actin bending energy. | Session 15: Dynamic Polymer Networks |
| 248 | Mechanically adaptive conducting polymers | Wang, Yue (Jessica) | We report the development of mechanically adaptive conducting polymers—a new class of materials with toughness that dynamically scales with the rate of deformation. | Session 15: Dynamic Polymer Networks |
| 249 | Mesoscale modeling of controlled degradation and erosion in hydrogel films | Palkar, Vaibhav; Choudhury, Chandan; Kuksenok, Olga | Herein, we present a Dissipative Particle Dynamics (DPD) based simulation approach for modeling controlled degradation and erosion in hydrogel films. | Session 15: Dynamic Polymer Networks |
| 250 | Supramolecular Cross-linked Hydrogels: Similarities and Differences with Chemically Cross-linked Networks | Laquerbe, Sandrine; Es Sayed, Julien; Lorthioir, Cédric; Meyer, Christophe; Narita, Tetsuharu; Ducouret, Guylaine; Perrin, Patrick; Sanson, Nicolas | In this scope, we developed a supramolecular cross-linker based on coordination chemistry that can be integrated in a stimuli-responsive gel through a one-pot synthesis. | Session 15: Dynamic Polymer Networks |
| 251 | Dynamic Covalent Networks As Polymer Electrolyte Adhesives | Kato, Ryo; Mirmira, Priyadarshini; Rowan, Stuart; Patel, Shrayesh | Dynamic Covalent Networks As Polymer Electrolyte Adhesives | Session 15: Dynamic Polymer Networks |
| 252 | Melt-Recyclable Shape-Memory Elastomers Containing Bisurea Segments | Krajovic, Daniel; Anthamatten, Mitchell | Dynamic mechanical analysis reveals a stiffness plateau that persists to temperatures over 100°C above the shape-triggering temperature. | Session 15: Dynamic Polymer Networks |
| 253 | Toward understandig the (scale-depending) dynamics in non-covalent polymer networks | Schmidt, Annette | We aim at understanding the underlying mechanisms, and at connecting the supramolecular bond lifetime to the network mobility and the self-restoring and scratch healing characteristics. | Session 15: Dynamic Polymer Networks |
| 254 | Molecular Control over Vitrimer-like Mechanics – Tuneable Dynamic Motifs based on the Hammett Equation in Polyimine Materials | Schoustra, Sybren; Zuilhof, Han; Dijksman, Joshua; Smulders, Maarten | We report the quantitative control over macroscopic dynamic material properties using the Hammett equation in dynamic (imine-based) polymer networks. | Session 15: Dynamic Polymer Networks |
| 255 | Rheology of Vitrimers: A Hybrid Molecular Dynamics-Monte Carlo Simulation Study | Perego, Alessandro; Khabaz, Fardin | In this work, coarse-grained molecular dynamics in conjunction with a Monte Carlo method, will be used as a simulation methodology to model the bond exchanges in these networks. | Session 15: Dynamic Polymer Networks |
| 256 | Polybenzoxazine vitrimer from cardanol based on exchangeable disulfide bonds: reprocessing, recycling, and self-healing and reversible adhesion | Trejo Machin, Acerina; Puchot, Laura; Verge, Pierre | This presentation will describe the synthesis and the properties of this new vitrimer. | Session 15: Dynamic Polymer Networks |
| 257 | Unentangled Vitrimer Melts: Generalized Rouse Theory Reveals Impact of Cross-link and Backbone Chemistry on Linear Viscoelasticity | RICARTE, RALM; Shanbhag, Sachin | We employ a generalized inhomogeneous Rouse model (IHR) to study the rheology of unentangled vitrimer melts. | Session 15: Dynamic Polymer Networks |
| 258 | Viscoelastic properties of PDMS vitrimers over a 200C window | Porath, Laura; Evans, Christopher | Viscoelastic properties of PDMS vitrimers over a 200C window | Session 15: Dynamic Polymer Networks |
| 259 | Control of Crystallinity and Deformation in Polymer Networks Using Thiol-Thioester Dynamic Chemistry | Kuenstler, Alexa; Martinez, Alina; Bowman, Christopher | By tailoring network composition and catalyst strength, we explore the interplay between bond exchange and crystallinity and how these processes can be used to program anisotropic crystallization under applied stress. | Session 15: Dynamic Polymer Networks |
| 260 | Instant-healing double-network polydimethylsiloxane with low stiffness and high toughness | Chen, Chao; Fei, Huafeng; Watkins, James; Crosby, Alfred | This work develops a tough and soft double-network polydimethylsiloxane (DN-PDMS) material that instantly heals in seconds. | Session 15: Dynamic Polymer Networks |
| 261 | Linking Molecular Behavior to Macroscopic Properties in Ideal Dynamic Covalent Networks | Marco Dufort, Bruno; Iten, Ramon; Tibbitt, Mark | Here, we present a framework to predict how complex network behavior in DCvNs emerges from the chemical landscape of the dynamic chemistry at the junction [1]. | Session 15: Dynamic Polymer Networks |
| 262 | Tailoring the Rheology of Dynamic Covalent Composites with Particle Size and Bond Lifetime | Jackson, Grayson; Dennis, Joseph; Dolinski, Neil; Rowan, Stuart; Jaeger, Heinrich | Here, we use these dynamic covalent composites comprising thiol-coated silica particles and ditopic benzalcyanoacetamide-based Michael acceptors to understand how their steady and oscillatory shear response depends on particle size. | Session 15: Dynamic Polymer Networks |
| 263 | Stress relaxation in tunable hybrid (chemical+physical) hydrogels | Raffaelli, Chiara; Ellenbroek, Wouter | Here, we present a computational study of a highly designable class of gels: 4-arm star polymers that are held together by a combination of chemical (permanent) and physical (reversible) crosslinks. | Session 15: Dynamic Polymer Networks |
| 264 | Proline isomerization regulates the phase behavior of elastin-like polypeptides in water | Zhao, Yani; Kremer, Kurt | Here, we study and compare the influence of the cis/trans proline isomerization on the phase behavior of ELPs in dilute aqueous solution. | Session 15: Dynamic Polymer Networks |
| 265 | Entropy-controlled cross-linking in linker-mediated vitrimers | Lei, Qun-li; XIA, Xiuyang; Yang, Juan; Pica Ciamarra, Massimo; Ni, Ran | Here we formulate a theoretical framework to elucidate the phase behavior of the linker-mediated vitrimers, in which entropy plays a governing role. | Session 15: Dynamic Polymer Networks |
| 266 | Effects of salt addition on viscoelasticity in conductive dynamic networks | Jing, Brian; Mata, Patricia; Evans, Christopher | We have investigated a series of dynamic networks made from precise ethylene glycols (2, 3 or 4 repeat units), boric acid, and added Li salt. | Session 15: Dynamic Polymer Networks |
| 267 | Hydrodynamic Interactions in Topologically Linked Ring Polymers | Rauscher, Phillip; Rowan, Stuart; De Pablo, Juan | We show that the symmetry of ring polymers leads to a hydrodynamic decoupling of ring dynamics. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 268 | Dynamics and rheology of bidisperse polymer melts through a simplified molecular model | Adeyemi, Oluseye; Xi, Li | In this study, we focused on bidisperse polymers of different compositions as an idealized model system and used a coarse-grained molecular model to explore their dynamics and rheology. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 269 | Recovery of stress overshoot under orthogonal shear after interrupted shear flow | Galvani, Marco; Olmsted, Peter; Robbins, Mark | Previous experimental work shows that melts subjected to interrupted shear flows exhibit a smaller overshoot when sheared again after allowing for some relaxation. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 270 | Predicting the plateau modulus from molecular parameters of conjugated polymers | Fenton, Abigail; Gomez, Enrique; Colby, Ralph | Using small angle neutron scattering, oscillatory shear rheology, in-situ polarized optical rheology, along with the freely rotating chain model, we have shown that twelve polymers with aromatic backbones, including conjugated polymers, populate a large part of this gap. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 271 | Model for flow-induced crystallization of industrial-grade LLDPEs | Andreev, Marat; Nicholson, David; Rutledge, Gregory; Kotula, Anthony; Kearns, Kenneth; Moore, Jonathan; den Doelder, Jaap | In this work, we combine information from atomistic molecular dynamics simulations, mesoscale slip-link modeling, rheo-Raman measurements and fast scanning chip calorimetry to build a model for flowing LLDPE melts undergoing crystallization. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 272 | Solvent-induced Collapse Transition in Kinetoplast DNA sheets | Holling, Dave; Klotz, Alexander | We aimed to observe the 2D version of the coil-globule transition by measuring diffusivity and radius of gyration of kinetoplasts as a function of ethanol concentration. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 273 | Dynamic transistion to isostaticity induces complex stress response in DNA nanostar networks | Conrad, Nathaniel; Bevier, Alexander; Fygenson, Deborah; Saleh, Omar | Here, we perform oscillatory rheology on networks made of 6-armed DNA nanostars (NS) whose designable interactions allow us to investigate the role of cross-linker lifetime on the complex stress response. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 274 | Local Hydrodynamics and Chain Architecture in Flowing Semidilute Polymer Solutions | Young, Charles; Sing, Charles | We developed an iterative conformational-averaging (CA) method for performing these calculations, circumventing a number of computational bottlenecks to enable the large-scale simulation of polymer solutions in flow. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 275 | Macromolecular engineering of pinching dynamics, extensional rheology and processability | Sharma, Vivek; Dinic, Jelena; Jimenez, Leidy; Martinez, Carina | We distill out how length, diameter and number of Kuhn segments affects macromolecular dynamics, rheological response and processability, and infer that the ratio of packing length to Kuhn length, a parameter we term as segmental dissymmetry, helps to hone in on the contrast related to flexibility and extensibility, that are determined by chemical structure for macromolecules comparable molecular weight. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 276 | Dynamics and Rheology of Polymers and Polyelectrolytes | Vermant, Jan | Dynamics and Rheology of Polymers and Polyelectrolytes | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 277 | Heterogeneous Rouse Model for Polymer Dynamics and Linear Rheology in the Time-Temperature-Superposition-Breakdown Regime | Simmons, David; Yu, Peijing | The Heterogeneous Rouse Model predicts a compression of the Rouse regime in complex and relaxation moduli with increasing dynamic heterogeneity at lower temperatures. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 278 | Crossover from Rouse to entangled polyisoprene dynamics: a multiscale simulation approach | Li, Wei; Behbahani, Alireza; Burkhart, Craig; Polinska, Patrycja; Harmandaris, Vagelis; Doxastakis, Manolis | The crossover from the low molecular limit described by the Rouse model to dynamics prescribed by entanglements has long been the subject of extensive research with significant challenges present. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 279 | Crossover from Rouse to Reptation Dynamics in Salt-Free Polyelectrolyte Complex Coacervates | Yu, Boyuan; Rauscher, Phillip; Jackson, Nicholas; Rumyantsev, Artem; De Pablo, Juan | A central question is whether the classical Rouse and reptation models can be applied to these systems. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 280 | Chain models for the simulation of polyelectrolytes in combination of flow and electric fields | Gulati, Shreyash; Setaro, Angelo C.; Underhill, Patrick | We use chain models to overcome this problem. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 281 | Fast Dynamics and its Role in Conductivity of Polymerized Ionic Liquids | bocharova, Vera; Genix, Anne-Caroline; Osti, Naresh; Mamontov, Eugene; Sokolov, Alexei | In this work, we provide new insights into the roles of various microscopic parameters controlling ion transport in these polymers, which are crucial for their rational design and practical applications. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 282 | Shear Response of THF Swollen Ionic Polymer Melts: Molecular Dynamics Simulations Study | Meedin, Shalika; Senanayake, Manjula; Mohottalalage, Supun; Kosgallana, Chathurika; Perahia, Dvora; Grest, Gary | We find that the shear viscosity is higher for the polyelectrolyte regime compared with ionomer one, due to large continuous ionic assemblies in polyelectrolytes. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 283 | Dynamics of liquid coacervates: Higher charged density polyelectrolytes are in entangled semiflexible regime | Aponte-Rivera, Christian; Rubinstein, Michael | Here, we consider the case in which the electrostatic persistence length of the high charge density polymer is larger than the diameter of a confining tube by low charge density polymers. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 284 | A critical Assessment of Linear Viscoelasticity and Time-Temperature-Salt and Other Superpositions in Polyelectrolyte Coacervates | Larson, Ronald; Liu, Ying; Li, Huiling | A critical Assessment of Linear Viscoelasticity and Time-Temperature-Salt and Other Superpositions in Polyelectrolyte Coacervates | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 285 | Molecular Basis for Elasticity and Viscoelasticity in Chitosan-Surfactant Hydrogels | Gotla, Suhas; Matysiak, Silvina | In this work, we employ multiscale molecular dynamics to identify the molecular phenomena that underpin these distinct mechanical behaviours. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 286 | Nonlinear Elongation Flows Effects on Aggregation in Associating Polymer Melts | Mohottalalage, Supun; Senanayake, Manjula; O’Connor, Thomas; Grest, Gary; Perahia, Dvora | Here, we use molecular dynamics (MD) simulations of bead-spring chains to identify how associating groups alter the structure and dynamics of linear polymer melts in uniaxial elongation flows. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 287 | Determination of the Number-Average Molecular Weight of Polyelectrolytes | Han, Aijie; Uppala, Shravan; Madsen, Louis; Colby, Ralph | We developed four methods using the chain dynamics in the semidilute unentangled regime to determine the number-average molecular weight (M n) of polyelectrolytes. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 288 | Rheology and Pinching Dynamics of Polyelectrolyte Solutions | Jimenez, Leidy; Martinez, Carina; Dinic, Jelena; Sharma, Vivek | Here focus on the characterization of capillary thinning and pinch-off dynamics, extensional rheology and printability of two model systems: sodium (polystyrene sulfonate) and poly(acrylic acid) by using dripping-onto-substrate (DoS) rheometry technique. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 289 | Effect of counterion and solvent type on the scattering and rheology of polyelectrolyte solutions | Gulati, Anish; Lopez, Carlos; Richtering, Walter | Here we use Small-Angle neutron Scattering (SANS) and rheology to study solutions of carboxymethyl cellulose (CMC) with different counterions of varying size and hydrophobicity in aqueous and organic media. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 290 | Polyelectrolyte solutions in complex macro- and micro-scale flows | Metaxas, Athena; Panwar, Vishal; Dutcher, Cari | In this study, a cationic polyacrylamide was used to modify the elasticity of the solution, and with varying concentrations of NaCl to alter the ionic strength of the solution. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 291 | Dynamic mechanical response of solid polyelectrolyte complexes at varying temperature, humidity and pH | Lalwani, Suvesh; Lutkenhaus, Jodie | Here, we describe the dynamic mechanical behavior of PAA-PAH solid PECs at different pH values, hydration and temperature. | Session 16: Dynamics and Rheology of Polymers and Polyelectrolytes |
| 292 | Comparing Attachment Methods of Surface Bound Chains and Their Impact on Local Glass Transition Dynamics | Roth, Connie; Thees, Michael; Huang, Xinru | By comparing and contrasting surface bound chains in melts and solutions, we leverage the wealth of information on polymer adsorption in solution developed over several decades to inform us about polymer conformations in the melt. | Session 17: Dynamics of Polymers Under Confinement |
| 293 | Dynamical gradients, barrier factorization and interface coupling in thick and thin films of glass-forming liquids | Schweizer, Kenneth; Phan, Anh | A force-level microscopic theory is constructed for the heterogeneous dynamics of glassy polymer liquids in free standing films. | Session 17: Dynamics of Polymers Under Confinement |
| 294 | Nanoconfined Benzyl Methacrylate Polymerization: Kinetics, Thermodynamics, and Chain Entropy Loss | Zhai, Chunhao; Vogt, Bryan; Simon, Sindee | Nanoconfined Benzyl Methacrylate Polymerization: Kinetics, Thermodynamics, and Chain Entropy Loss | Session 17: Dynamics of Polymers Under Confinement |
| 295 | Comparing Local Glass Transition by Fluorescence with Physical Aging by Ellipsometry Within Rubbery-Glassy PnBMA/PS Bilayer Films | Merrill, James; McGuire, Jennifer; Thees, Michael; Roth, Connie | Here we investigate this directly by performing fluorescence measurements to determine the PS T g response within PnBMA/PS bilayer films with equivalent geometry to those used for the physical aging studies. | Session 17: Dynamics of Polymers Under Confinement |
| 296 | Distribution of Relaxation Dynamics in Polymer Nanocomposites: Wetting and Chain Packing Effects | Mapesa, Emmanuel; Street, Dayton; Kilbey,II, S. Michael; Sangoro, Joshua | We explain these observations in a unifying way by invoking the concepts of chain wetting and packing in interfacial zones around nanofillers. | Session 17: Dynamics of Polymers Under Confinement |
| 297 | Tuning Physicochemical Properties of Polymers through Extreme Nanoconfinement | Arabi Shams Abadi, Ahmad; Wang, Haonan; Chen, Yueli; Rafie, Ayda; Seredych, Mykola; Kalra, Vibha; Fakhraai, Zahra | Here, we explore the properties of polymers in CaRI films with various strengths of interfacial interactions. | Session 17: Dynamics of Polymers Under Confinement |
| 298 | To Understand Film Dynamics Look to the Bulk | Lipson, Jane E; White, Ronald | By applying our Cooperative Free Volume (CFV) model, employing the Locally Correlated Lattice (LCL) equation of state, we connect in a formal and quantitative way the impact of sample nanoconfinement on segmental dynamics to the effect of changing the thermodynamic state of a bulk sample. | Session 17: Dynamics of Polymers Under Confinement |
| 299 | Gradient overlap effects in ultra-thin films | Ghanekarade, Asieh; Diaz Vela, Daniel; Simmons, David | We report on distinct behaviors in these regimes in terms of the form of the gradients, the presence or absence of a bulk-like domain, and the breadth of the overall film glass transition. | Session 17: Dynamics of Polymers Under Confinement |
| 300 | Dynamics of Capillary Rise Infiltration(CaRI) of entangled polymers into nanoparticle packings | Venkatesh, R Bharath; Lee, Daeyeon | In this work, we probe the effect of extreme nanoconfinement on the infiltration dynamics of entangled polystyrene (molecular weight = 80k – 4M g/mol) into random packings of silica nanoparticles (diameter = 7 and 25 nm). | Session 17: Dynamics of Polymers Under Confinement |
| 301 | Mobility Gradient of Polymer Chains in an Interfacial Region with a Solid | Tanaka, Keiji; Nguyen, Hung; Oda, Yukari; Morimitsu, Yuma; Yamamoto, Satoru; Kawaguchi, Daisuke | We found the presence of the dynamics gradient of chains in the interfacial region with the solid surface. | Session 17: Dynamics of Polymers Under Confinement |
| 302 | Architecture Effect on Conformational Relaxation of Polymer Chains at an Interface | Nguyen, Hung; Kawaguchi, Daisuke; Tanaka, Keiji | We here show an effect of thermal annealing on the chain conformation of polystyrene (PS) with different architecture near at the solid interface using sum-frequency generation spectroscopy. | Session 17: Dynamics of Polymers Under Confinement |
| 303 | Enhanced Free Surface Mobility Facilitates Release of Free-volume Holes in Thin-film Polymer Glasses | Zha, Hao; Wang, Xinping; Zuo, Biao | Herein, we explored the free volume diffusion dynamics by investigating the glass transition temperature ( T g) changes in thin poly (ethylene terephthalate) (PET) films due to variations in the fraction of free area at the film surfaces — associated with enhanced molecular mobility, and by modeling using the surface-mediated diffusion model. | Session 17: Dynamics of Polymers Under Confinement |
| 304 | Influence of controlled ionic conductivity on melt electrospinning of polyethylene | Sheoran, Neelam; Boland, Brenton; Thornton, Samuel; Gorga, Russell; Bochinski, Jason; Clarke, Laura | We discuss results from two commercial formulations of linear low-density polyethylene as a function of additive concentration and correlate changes in fluid properties with the time to first fluid perturbation, the number of jets, the capillary length (due to the electric force), the cone and jet sizes and the resulting fiber diameter. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 305 | Using Multiplexed Electrosprays To Manipulate Fluids and (soft) Materials | Gomez, Sandro | Using fluid mechanics and electrostatics, we a) developed criteria for compact multiplexing to increase flow rate drastically, b) microfabricated systems with high packing densities (1.1 10 4 sources/cm 2), reducing the cost per electrospray source, and c) demonstrated successful operation of these devices in the synthesis of (soft) materials (e.g., polymer nanoparticles of controlled shape for drug delivery and battery materials) and in microchip cooling. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 306 | Finite Element Method Modeling of Self-Limiting Electrospray Deposition | Nachtigal, Catherine; Kovacevich, Dylan; Lei, Lin; Singer, Jonathan | To model the SLED process, COMSOL was used to create a model of the spray needle, target, and electric field, creating a particle trace representing the spray. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 307 | Self-limiting electrospray deposition to create bioactive coating | Park, Sarah; Lei, Lin; Lallow, Emran; Nachtigal, Catherine; Lin, Hao; Singer, Jonathan | Here, I will discuss opportunities to create bioactive conformal coatings on medically-relevant architectures with blending, self-assembly, and complex geometries. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 308 | The Influence of Charge Injection on Melting Gels Delivered via Electrospray Deposition | Grzenda, Michael; Gamboa, Arielle Marie; Lei, Lin; Mercado, James; Samateh, Alfusainey; Klein, Lisa; Jitianu, Andrei; Singer, Jonathan | The Influence of Charge Injection on Melting Gels Delivered via Electrospray Deposition | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 309 | Stability limit of droplets in combined fields | Beroz, Justin; Hart, A. John; Bush, John | Here we present the experimental results for a droplet’s stability limit under combined electrostatic and gravitational fields – a nonlinear system in which the droplet takes various non-elementary shapes at different combined field strengths. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 310 | The transition from induced charge electroosmotic flow to electrothermal flow in a constriction microchannel | Malekanfard, Amirreza; Liu, Zhijian; Xuan, Xiangchun | We present a combined experimental and numerical study of the transition from the induced charge electroosmotic flow in a low-conductivity fluid to the electrothermal flow in a high-conductivity fluid. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 311 | Using Electrohydrodynamic Deposition for In-Space Manufacture of Perovskite Solar Cells | Erickson, Samuel; Delmas, William; DiBenedetto, Albert; McMillon-Brown, Lyndsey; Peshek, Timothy; Ghosh, Sayantani | We have developed a thin film preparation technique utilizing electrohydrodynamic deposition (EHD) for in situ fabrication of photovoltaic (PV) devices during space missions. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 312 | Electrohydrodynamic Thermal Oscillators for Waste Heat Harvesting Applications | Ma, Tianxing; Dsouza, Darrel; Ryerson, Kyrsten McKenzie; Signorelli, Matthew; Singer, Jonathan; Zhong, Mingjiang; Loewenberg, Michael; Osuji, Chinedum | This work attempts to design and test the efficiency of a novel liquid-based thermal oscillator, which utilizes periodic electrohydrodynamic (EHD) capillary bridging and debridging between two coaxial droplets in a parallel plate capacitor under an electric field. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 313 | Dynamic Modulation of Dielectrophoretic Force Using Resonant Feedback | Padhy, Punnag; Zaman, Mohammad; Jensen, Michael; Hesselink, Lambertus | To overcome this problem, we propose to connect the trap electrodes in series with an external resistor and an inductor to form a resonant RLC circuit. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 314 | Interfacial and bulk assembly of ellipsoidal microparticles under the influences of external electric fields | Trevenen, Samuel; Beltramo, Peter | This talk will present recent work using Mirau Interferometry to accurately map the interfacial deformation around polymer microellipsoids pinned to an air-water interface under various external fields. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 315 | Interfacial Tension Hysteresis in Oxidizing Eutectic Gallium-Indium | Hillaire, Keith; Song, Minyung; Kiani, Abolfazl; Rashid-Nadimi, Sahar; Dickey, Michael; Daniels, Karen | We examine the interfacial tension’s dependence on voltage, voltage sweep rate and direction, and on time, and present a model of the droplet’s surface free energy as dependent on charge density and molecular composition of the interface to describe the voltage history dependence of the interfacial tension. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 316 | Electrospray Deposition of Polyimide with Passive Material Focusing | Kingsley, Bryce; Pawliczak, Emma; Hurley, Thomas; Chiarot, Paul | Electrospray Deposition of Polyimide with Passive Material Focusing | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 317 | Linking electrostatic charging profiles to patterns on peeled tape | Reiter, Mary; Shinbrot, Troy | We contextualize these findings within industry and nature and describe new avenues for this field. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 318 | Measuring charge loss in acoustically-levitated, airborne materials | McGrath, Jake; Mendez, Joshua; Huang, Tianshu; Harvey, Dana; Burton, Justin | Now, we have constructed an acoustic levitation device capable of suspending dense materials such as copper. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 319 | Nanosheets and Hydrogels of Self-assembled 2-nm Metal-Organic Cages with Electrostatic interaction | Yang, Yuqing; Rehak, Pavel; Xie, Ting-Zheng; Feng, Yi; Sun, Xinyu; Chen, Jiahui; Li, Hui; Král, Petr; Liu, Tianbo | We report a hydrogel formation process from 2-nm emissive, low molecular-weight metal-organic cages at low concentrations (>15 mg/mL) based on counterion-mediated attraction, π-π/hydrophobic interactions as well as σ-π interactions. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 320 | Capture of semi-flexible polyelectrolytes by a Nanopore: A Lattice Boltzmann Simulation Study | Qiao, Le; Slater, Gary | In this talk, we compare LD results to those obtained when Hydrodynamic Interactions (HI) and explicit salt are added. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 321 | Coarse grained modeling of ion transport through a hydrophobic nanopore | Gubbiotti, Alberto; Tinti, Antonio; Camisasca, Gaia; Giacomello, Alberto | Based on the data from RMD simulations, we developed a coarse grained model for the dynamics of the water inside the pore and computed the conductivity of both ions as a function of the number of water molecules inside the pore. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 322 | Exact polarization energy for contacting dielectrics | Lian, Huada; Qin, Jian | We propose a parameterized form of the electrostatic energy, which generalizes the known logarithmic singularity for conductors to dielectrics. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 323 | Electro-optic demonstration of ferroelectricity in the thermotropic nematic liquid crystal DIO | MacLennan, Joseph; Chen, Xi; Korblova, Eva; Glaser, Matthew; Walba, David; Clark, Noel | In the search for additional ferroelectric nematic liquid crystals, we studied the liquid crystal DIO, which was previously reported to be ferroelectric-like [2]. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 324 | Electro-optic response of a spontaneously twisted ferroelectric nematic structure in an anti-parallel rubbed cell | Chen, Xi; Korblova, Eva; Shao, Renfan; Glaser, Matthew; MacLennan, Joseph; Walba, David; Clark, Noel | Here we report an N F twist structure with two possible chiralities stabilized by polar anchoring at the cell surfaces that forms spontaneously in anti-parallel rubbed cells. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 325 | Advanced material science of clay minerals: from capture of carbon dioxide to non-iridescent structural coloration. | Fossum, Jon Otto | Advanced material science of clay minerals: from capture of carbon dioxide to non-iridescent structural coloration. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 326 | How Electrostatic Interactions Determine the Shape of Chiral Assemblies | Mccourt, Joseph; Kewalramani, Sumit; Valencia, Dulce; Gao, Changrui; Bedzyk, Michael; Olvera De La Cruz, Monica | We combine in situ small-/wide-angle X-ray scattering (SAXS/WAXS), cryo-transmission electron microscopy (TEM) and atomic force microscopy (AFM) to analyze the self-assembly of charged chiral amphiphiles consisting of an amino acid (lysine) head group coupled to alkyl tails (C n=12,14,16). | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 327 | A new scaling theory for polyelectrolyte brushes | Chen, Guang; Stone, Howard | In this work, we introduce new scaling laws for the brush height H as a function of the grafting density σ, salt concentration c s, and charge fraction φ, by employing a cell model to provide a detailed analysis of the electrostatic interactions between the charged monomers and mobile ions based on the Poisson-Boltzmann theory. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 328 | Electro-optic study of the phase behavior of mixtures of two ferroelectric nematic liquid crystals | Zhu, Zhecong; Park, Cheol; Chen, Xi; Korblova, Eva; Glaser, Matthew; MacLennan, Joseph; Walba, David; Clark, Noel | We have shown previously that the second nematic phase (N F) of the thermotropic liquid crystal RM374 is ferroelectric [1]. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 329 | Electrophoretic mobility of highly charged macroions in aqueous electrolytes with multivalent coions | Guerrero-Garcia, Guillermo; Gonzalez-Tovar, Enrique | In order to determine if such a dominance can be observed dynamically, in this work we study the electrophoretic mobility of highly charged spherical colloids immersed in several 1:z electrolytes, when the counterions have the same properties. | Session 18: Electrostatic Manipulation of Fluids and Soft Matter |
| 330 | Rectification and transport in non-equilibrium parity violating metamaterials and liquids. | Liao, Zhenghan; irvine, william; Vaikuntanathan, Suriyanarayanan | Rectification and transport in non-equilibrium parity violating metamaterials and liquids. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 331 | Self-organised polar and nematic structures at the gas-liquid interface of motility-induced phase separation | Lee, Chiu Fan | By using a mean-field analysis of a system of active particles with discretized orientations in two dimensions, I obtain the interfacial profiles and elucidate various interfacial properties of the system under MIPS. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 332 | Spontaneous oscillations driven by nonreciprocal cross-diffusion | Shokri-Kalan, Somaiyeh; You, Zhihong; Marchetti, M Cristina | Using the Fourier-Galerkin method, we obtain a one-mode approximation that highlights the underlying physics of this nonreciprocity-driven oscillation. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 333 | The deformation and flow of a levitated granular membrane | Lim, Melody; VanSaders, Bryan; Souslov, Anton; Vitelli, Vincenzo; Jaeger, Heinrich | We use hydrodynamic models for rotating liquid drops to describe the granular dynamics and extract the droplet surface tension, and show that long-range acoustic forces and the anisotropy of the droplet give rise to a surface tension that scales with the droplet size. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 334 | Complex Acoustic Fields for Driving Levitated Granular Media | VanSaders, Bryan; Lim, Melody; Vitelli, Vincenzo; Jaeger, Heinrich | We apply the Lattice Boltzmann Method (LBM) to conduct direct numerical simulations of levitated objects, which permits investigation of fluid-structure interactions, including momentum transfer by acoustic wave scattering and viscous dissipation. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 335 | Controlling elasticity in levitated active hinges | Xia, Anne; Lim, Melody; VanSaders, Bryan; Jaeger, Heinrich | We use acoustic levitation to address this issue, by which we can assemble sub-millimeter granular clusters with tunable interactions. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 336 | Sculpting Crystals One Burgers Vector at a Time: Towards Colloidal Lattice Robot Swarms | VanSaders, Bryan; Glotzer, Sharon | We investigate how particles with variable diameters can be embedded in colloidal monolayers to produce dislocations on demand. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 337 | Field-Drive Robot Swarm Quasi-Transitions | Wang, Gao; Phan, Trung; Li, Shengkai; Wombacher, Michael; Chen, Guo; Qu, Junle; Peng, Yan; Goldman, Daniel; Levin, Simon; Austin, Robert | We present an ecology-inspired form of active matter consisting of a field-drive robot swarm. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 338 | Developmentally driven order-disorder transition in chiral living crystals | Han, Tzer; Higinbotham, Hugh; Mietke, Alexander; Chen, Yuchao; Foster, Peter; Gokhale, Shreyas; Dunkel, Jorn; Fakhri, Nikta | Here, we report on the formation of chiral crystals of starfish embryos which undergo autonomous order-disorder transitions. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 339 | Physical gliders produced from smarticle clouds | Vardhan, Akash; Avinery, Ram; Kedia, Hridesh; Wiesenfeld, Kurt; Goldman, Daniel | Active matter studies have mainly considered systems in which agents are individually motile and maintain a fixed shape. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 340 | Contact Sensing Enables Tunable Ratcheting of a Robotic Collective | Avinery, Ram; Li, Shengkai; Goldman, Daniel | Here we study a simulated robotic collective, with individuals performing run-and-tumble behavior. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 341 | A self-kneading chiral crystal | Bililign, Ephraim; Balboa Usabiaga, Florencio; Ganan, Yehuda; Soni, Vishal; Magkiriadou, Sofia; Shelley, Michael; Bartolo, Denis; irvine, william | To realize this more general class of matter, we build an active chiral crystal composed of spinning magnetic colloids, revealing a lively self-organized steady-state of crystalline whorls that blurs the line between solid and liquid. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 342 | Locomotion without force: exploiting curved spaces | Rocklin, Zeb; McInerney, James; Aydin, Enes; Ozkan-Aydin, Yasemin; Goldman, Daniel | Here, we report the first experimental realization of this effect via a T-shaped robotic model with servos driving 34 gm masses via pinion-gears along three curved rack-type arms (lengths 59.5cm, 25cm, total mass 33 gm). | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 343 | Topological defects in non-reciprocal solids | Scheibner, Colin; Braverman, Lara; Vitelli, Vincenzo | In this talk, I will discuss the theory of topological defects in two-dimensional crystals that violate MB reciprocity. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 344 | Impact of active solids | Brandenbourger, Martin; Scheibner, Colin; Vitelli, Vincenzo; Coulais, Corentin | Here, we study 1D and 2D active metamaterials capable of large deformations by measuring their mechanical responses to dynamic impacts. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 345 | Complete absorption of topologically protected waves | Baardink, Guido; Cassella, Gino; Neville, Luke; Souslov, Anton; Milewski, Paul | As a realization, we present a model system of two topological fluids composed of counter-spinning particles, which are separated by a boundary that transitions from a fluid-fluid interface into a no-slip wall. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 346 | Active Elastic Materials : from emerging collective motion to autonomous actuation | Baconnier, Paul; Hernández, Claudio; During, Gustavo; Coulais, Corentin; Démery, Vincent; Dauchot, Olivier | With the help of centimetric model of self-propelled particles, we construct the first experimental model system of an active elastic material, and study its emerging behaviors in various mechanical conditions. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 347 | Signal manipulation via dynamic dispersion tuning through a flat band in a phononic metamaterial | Karki, Pragalv; Paulose, Jayson | In this talk, we will demonstrate how to stop and reverse a sound pulse in a new class of programmable metamaterials. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 348 | Marine Sponge Tissue Displays Both Dynamic and Diverse Mechanics | Kraus, Emile; Mellenthin, Lauren; Siwiecki, Sara; Song, Dawei; Janmey, Paul; Sweeney, Alison | Here we perform rheological experiments on a diverse set of sponge species and fit the data using hyperelastic constitutive models. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 349 | Mechanical metamaterial inspired by biological tissues | Li, Xinzhi; Bi, Dapeng | We introduce an amorphous mechanical metamaterial inspired by how cells pack in biological tissues. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 350 | Coarse-grained kinematics of origami tessellations | Nassar, Hussein | Here, we develop tools suitable for the analysis of the coarse grained kinematics of origami tessellations in the limit of fine crease patterns. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 351 | Active elastocapillarity | Binysh, Jack; Souslov, Anton | Here, we develop a continuum theory that describes an active surface wrapped around a passive soft solid. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 352 | Topology protects robust global cycles in stochastic systems | Tang, Evelyn; Agudo-Canalejo, Jaime; Golestanian, Ramin | Here, we present biologically plausible motifs from which two-dimensional stochastic networks can be constructed. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 353 | Bioinspired Soft Composites with Deformation-induced Coloration | Rafsanjani, Ahmad; Poloni, Erik; Place, Vadim; Ferretti, David; Studart, Andre | Here, we draw a high-level inspiration from active iridophores and introduce an architected soft composite material that can reversibly change its color under pure deformation. | Session 19: Emergent Mechanics of Active, Robotic, and Living Materials |
| 354 | Neural Network Ab-initio Molecular Dynamics (NNAIMD) for Water and Covalent Glasses | Nomura, Ken-ichi; Baradwaj, Nitish; Fukushima, Shogo; Kalia, Rajiv; Krishnamoorthy, Aravind; Mishra, Ankit; Nakano, Aiichiro; Rajak, Pankaj; Shimamura, Kohei; Shimojo, Fuyuki; Vashishta, Priya | In this talk, I will discuss our recent progress and applications to water and medium range order in covalent glasses systems. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 355 | Tensor-Field Molecular Dynamics – A Highly Accurate and Data-Efficient Interatomic Potential from SE(3)-equivariant Graph Neural Networks | Batzner, Simon; Smidt, Tess; Sun, Lixin; Mailoa, Jonathan; Kornbluth, Mordechai; Kozinsky, Boris | We present Tensor-Field Molecular Dynamics (TFMD), a novel Deep Learning Interatomic Potential for accelerating Molecular Dynamics simulations. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 356 | Thermodynamic properties by on-the-fly machine-learned interatomic potentials: thermal transport and phase transitions of zirconia | Verdi, Carla; Karsai, Ferenc; Jinnouchi, Ryosuke; Kresse, Georg | Here we employ a recently developed on-the-fly learning technique based on molecular dynamics and Bayesian regression [1] in order to generate an interatomic potential capable to describe the thermodynamic properties of the prototypical transition metal oxide ZrO 2. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 357 | Neural network molecular dynamics of ferroelectric domain boundary | Aditya, Anikeya; Nomura, Ken-ichi; Linker, Thomas; Kalia, Rajiv; Krishnamoorthy, Aravind; Nakano, Aiichiro; Shimamura, Kohei; Shimojo, Fuyuki; Tiwari, Subodh; Vashishta, Priya | In this study, I will discuss the development of NNAIMD force field to study PTO crystal, along with simulation results on complex DW dynamics using it. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 358 | Accurate and Efficient ML Force Fields for Hundreds of Atoms | Chmiela, Stefan; Vassilev Galindo, Valentin; Sauceda, Huziel; Muller, Klaus-Robert; Tkatchenko, Alexandre | To overcome this limitation, we develop an efficient iterative, parameter-free solver to train symmetric gradient domain machine learning (sGDML) [Chmiela et al., 2018] potentials for systems with several hundred atoms. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 359 | A Fourth-Generation High-Dimensional Neural Network Potential with Accurate Electrostatics Including Non-local Charge Transfer | Finkler, Jonas; Ko, Tsz; Goedecker, Stefan A; Behler, Jorg | The methods significantly improved description of the potential energy surface substantially extends the applicability of modern machine learning potentials. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 360 | BIGDML: Efficient Gradient-Domain Machine Learning Force Fields for Materials | Sauceda, Huziel; Gálvez-González, Luis; Chmiela, Stefan; Paz-Borbón, Lauro; Muller, Klaus-Robert; Tkatchenko, Alexandre | Here we introduce Bravais-Inspired GDML[1,2] (BIGDML) model, with which we are able to construct meV-accurate force fields for materials using a training set with just 10-100 geometries. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 361 | The effects of different exchange and correlation functionals on Neural Networks for water | Pedroza, Luana; Torres, Alberto; Rocha, Alexandre | In this work we obtain neural-network-trained force fields that are accurate at the level of Density Functional Theory (DFT). | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 362 | Quantum parallel algorithm for the thermal canonical ensemble | Iitaka, Toshiaki | In this talk, I propose an algorithm ( https://arxiv.org/abs/2006.14459 ) that is embarrassingly parallel and expected to work extremely efficient on massive parallel classical supercomputers such as Fugaku, where tensor network representation [1] is introduced as the solution of the first difficulty, and quantum parallelization of METTS algorithm [2] using random state method [3] is introduced as the solution of the second difficulty. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 363 | An adaptive-mesh, GPU-accelerated, and optimally error-controlled special relativistic hydrodynamics code | Tseng, Po-Hsun; Schive, Hsi-Yu; Chiueh, Tzihong | An adaptive-mesh, GPU-accelerated, and optimally error-controlled special relativistic hydrodynamics code | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 364 | A Numerical Code for Automated Calculation of Coarse-Grained Potentials using the Iterative Boltzmann Inversion (IBI) Method | Johnson, Lilian; Hoang, T.; Phelan, Frederick | We report here on a software code which automates the development of coarse-grained potentials using IBI. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 365 | Differentiable Molecular Simulations | Wang, Wujie; Axelrod, Simon; Gomez-Bombarelli, Rafael | The applications we present including solving inverse structure elucidation problem from experimental observation and parameterizing control protocols for non-equilibrium chemical dynamics. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 366 | Machine learning dielectric constant of water in a large pressure-temperature range | RUI, HOU; YUHUI, QUAN; Pan, Ding | Here, we built a neural network dipole model, which can be combined with molecular dynamics to compute P-T dependent dielectric properties of water as accurately as first-principles methods but much more efficiently. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 367 | Backmapping of Equilibrated Condensed-Phase Molecular Structures with Generative Adversarial Networks | Stieffenhofer, Marc; Wand, Michael; Bereau, Tristan | In this study we introduce DeepBackmap: A deep neural network based approach to directly predict equilibrated molecular structures for condensed-phase systems. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 368 | Frequency dependence of W made simple using a multi-pole approximation | Leon Valido, Dario; Cardoso, Claudia; Varsano, Daniele; Molinari, Elisa; Ferretti, Andrea | In this work we explore a multi-pole approach for getting an effective representation of W. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 369 | Learning electron densities in condensed-phase space | Lewis, Alan; Grisafi, Andrea; Ceriotti, Michele; Rossi, Mariana | In this work, we present a model that is able to learn and predict the electronic density of diverse materials, ranging from liquids to solid semiconductors and metals. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 370 | Biased, efficient sampling of polymer conformations using Brownian bridges | Narsimhan, Vivek; WANG, Shiyan; Ramkrishna, Doraiswami | In this talk, we introduce a mathematical concept known as a Brownian bridge, and describe how it can be utilized in many areas of polymer physics. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 371 | Flexible Molecules Need More Flexible Machine Learning Force Fields | Vassilev Galindo, Valentin; Cordeiro Fonseca, Grgory; Poltavskyi, Igor; Tkatchenko, Alexandre | To resolve this, we propose moving from learning the entire PES within a single ML model to the employment of local models that are combined into a global force field. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 372 | Network structure of non-equilibrium quantum transport models. | Poteshman, Abigail; Bassett, Lee; Bassett, Danielle | In this work, we construct networks representing the energy landscape of non-equilibrium transport through quantum antidots—an example of an open, many-body quantum system—corresponding to two distinct models of internal quantum states: a single-particle, non-interacting model and a mean-field model including interactions. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 373 | Two-tier machine learning acceleration of molecular dynamics with enhanced sampling: surface reactions and restructuring on metal catalysts | Sun, Lixin; Batzner, Simon; Che, Wei; Lim, Jin Soo; Xie, Yu; Torrisi, Steven; Vandermause, Jonathan; Kozinsky, Boris | To solve this problem, we introduce a two-tier machine learning approach to accelerate MD simulations. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 374 | Generalization of SNAP to arbitrary machine-learning interatomic potentials in LAMMPS | Thompson, Aidan | I will discuss the underlying algorithms and describe some interesting applications. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 375 | Quantum Dynamics Made Fast: Achieving Linear Time-Scaling for Nonequilibrium Green Functions | Schlünzen, Niclas; Joost, Jan-Philip; Bonitz, Michael | Among others, the nonequilibrium Green functions (NEGF) method has proven to be a powerful tool to reliably predict the quantum dynamics, without being limited to 1D or spatially homogeneous systems. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 376 | Modeling the Dynamics of Complex Energy Materials with Machine Learning | Artrith, Nongnuch | Here, I will give an overview of recent methodological advancements of ML potentials based on artificial neural networks (ANNs) [1-5] and applications of the method to challenging materials classes including metal and oxide nanoparticles and amorphous phases. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 377 | Accurate many-body repulsive potentials for density-functional tight binding from deep tensor neural networks | Medrano Sandonas, Leonardo; Stoehr, Martin; Tkatchenko, Alexandre | Hence, we combine DFTB with deep tensor neural networks (DTNN) to maximize the strengths of both approaches. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 378 | Improving Molecular Force Fields Across Configurational Space by Combining Supervised and Unsupervised Machine Learning | Cordeiro Fonseca, Grgory; Poltavskyi, Igor; Vassilev Galindo, Valentin; Tkatchenko, Alexandre | To bypass this issue, we combine unsupervised and supervised ML methods: (I) we cluster CS into subregions similar in terms of geometry and energetics, (II) we iteratively test a MLFF model on each subregion and expand the training set to flatten the prediction accuracy across CS. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 379 | Central Moment Lattice Boltzmann Schemes with Fokker-Planck Guided Collision for Simulation of Multiphase Flows with Surfactant Effects and Turbulence | Schupbach, William; Premnath, Kannan | We present central moment lattice Boltzmann (LB) schemes, whose collision steps are represented by a novel Fokker-Planck (FP) kinetic model, for computations of multiphase hydrodynamics, interface tracking and surfactant evolution. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 380 | Machine learning assisted interatomic and electronic structure models for molecular simulation | Zhang, Linfeng | We introduce a machine learning (ML)-based framework for building interatomic and electronic structure models following two general principles: 1) ML-based models should respect important physical constraints in a faithful and adaptive way; 2) to build truly reliable models, efficient algorithms are needed to explore relevant physical space and construct optimal training data sets. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 381 | WannierBerri code: High performance Wannier interpolation of Berry curvature and related quantities. | Liu, Xiaoxiong; Ghim, Minsu; Lenggenhager, Patrick; Jiménez Herrera, Miguel Ángel; Robredo, Iñigo; Ryoo, Ji Hoon; Lihm, Jae-Mo; Park, Cheol-Hwan; Souza, Ivo; Tsirkin, Stepan | We present WannierBerri (WB) [1] – a new Python code for Wannier interpolation. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 382 | Systematic Comparison and Cross-validation of Fixed-Node Diffusion Monte Carloand Phaseless Auxiliary-Field Quantum Monte Carlo in Solids | Benali, Anouar; Malone, Fionn; Morales, Miguel; Caffarel, Michel; Kent, Paul; Shulenburger, Luke | In this work we assess the feasibility of determining exact total energies for solid state Hamiltonians by studying primitive cells of four representative materials, Al, LiF and Carbon-diamond. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 383 | Prospects and Scaling Properties of Quantum Monte Carlo Forces for Heavier Ions | Tiihonen, Juha; Clay, Raymond; Krogel, Jaron | Here we give an outlook of continuum variational Monte Carlo and diffusion Monte Carlo forces in applications including heavier than usual elements, such as third row transition metals which require the use of pseudopotentials. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 384 | Entanglement transitions as a probe of quasiparticles and quantum thermalization | Lu, Tsung-Cheng; Grover, Tarun | We introduce a diagnostic for quantum thermalization based on mixed-state entanglement. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 385 | MuST: A high performance ab initio framework for the study of disordered structures | Wang, Yang; Eisenbach, Markus; Liu, Xianglin; Karabin, Mariia; Ghosh, Swarnava; Terletska, Hanna; Mondal, Wasim; Tam, Ka-Ming; Zhang, Yi; Chioncel, Liviu; Raghuraman, Vishnu; Widom, Michael; Tian, Fuyang | In this presentation, I will introduce MuST, an open source package designed for enabling first principles investigation of disordered materials. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 386 | A first-principles Quantum Monte Carlo study of two-dimensional (2D) GaSe and GaSe1-xSx alloys | Wines, Daniel; Saritas, Kayahan; Ataca, Can | We aim to present a terminal theoretical benchmark for pristine monolayer GaSe and alloys, which will aid in the further study of 2D PTMCs and alloys using DMC methods. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 387 | Ensemble Green’s function theory for interacting electrons with degenerate ground states | Linnér, Erik; Aryasetiawan, Ferdi | Rev. B 100, 235106 (2019)] we propose an ensemble Green’s function formalism, based on the von Neumann density matrix approach, for treating the one-electron excitation spectra of a degenerate electronic system. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 388 | Boost all-electron full-potential DFT calculation with the domain specific SIRIUS library. | Zhang, Long; Trickey, Samuel; Cheng, H-P. | We introduce the EXCITING-PLUS(EP) full potential linearized augmented plane wave (FP-LAPW) code interfaced with domain specific SIRIUS library. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 389 | Simulation of Quantum Spin-Liquid Phases with Spectral Methods | Brito, Francisco; Ferreira, Aires | In this work, we combine accurate Chebyshev polynomial expansions [1-3] and thermal pure quantum states (TPQ) [4] to simulate quantum spin models with highly entangled ground states. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 390 | Excited states in variational Monte Carlo using a penalty method | Pathak, Shivesh; Busemeyer, Brian; Rodrigues, Jo?o; Wagner, Lucas | We present an algorithm based on orthogonalization to the ground state that resolves these difficulties in the limit as the wave function parameterization becomes complete. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 391 | Quantum Many-body Eigensolvers with Entanglement Renormalization | Khan, Abid; Yu, Xiongjie; Clark, Bryan; Pekker, David | We provide an approximate algorithm for computing eigenstates of Hamiltonians with hundreds of sites. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 392 | Permutation Matrix Representation Quantum Monte Carlo | Gupta, Lalit; Albash, Tameem; Hen, Itay | We present a quantum Monte Carlo algorithm for the simulation of general quantum and classical many-body models within a single unifying framework. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 393 | Multi-Task Reinforcement Learning for Autonomous Material Design | Rajak, Pankaj | In this talk, I will discuss our recent work on multi-task reinforcement learning (RL) for automated material-discovery with target properties and predictive synthesis of quantum materials. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 394 | Fast Bayesian Force Fields from Active Learning: Application to 2D Material and Substrates | Xie, Yu; Vandermause, Jonathan; Sun, Lixin; Cepellotti, Andrea; Kozinsky, Boris | We present a way to dramatically accelerate Gaussian process models for interatomic force fields based on many-body kernels by mapping both forces and uncertainties onto functions of low-dimensional features. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 395 | Efficient construction of training datasets based on random sampling and structural optimization | Choi, Youngjae; Jhi, Seung-Hoon | We develop a scheme named randomized atomic-system generator (RAG) to produce the training sets that widely cover the potential energy surface by combining the random sampling and structural optimization. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 396 | Data-Driven Interatomic Potentials for Molten Salts | Tovey, Samuel; Holm, Christian | In our work, we have developed an interatomic potential for molten NaCl using Gaussian process regression. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 397 | Design of novel polymer-metal interfaces using first principles-informed artificial intelligence techniques | MA, RURU; Linker, Thomas; Yang, Liqiu; Mishra, Ankit; Kamal, Deepak; Wang, Yifei; Nomura, Ken-ichi; Shimojo, Fuyuki; Nakano, Aiichiro; Kalia, Rajiv; Vashishta, Priya | In this work, we investigate how Aluminum and Boron-Nitride coating affects the charge injection barrier and hot carrier dynamics in various polymer systems. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 398 | Electronic density and atomic forces in solids by plane-wave auxiliary-field quantum Monte Carlo | Chen, Siyuan; Motta, Mario; Ma, Fengjie; Zhang, Shiwei | We present accurate electronic densities and ionic forces in solids. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 399 | A Potential Improvement for Electrostatic Interactions: Constructing A Fluctuating Charge Model for Nucleic Acids | Myers, Christopher; Chen, Alan | As such, we will present our approach to augmenting AMBER based force fields for nucleic acids with the ability to account for polarization. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 400 | Transfer learning of neural network potentials for reactive chemistry | Hu, Quin; Goodpaster, Jason | In this study, we are developing a method to train a neural network potential with high-level wavefunction theory on targeted system of interest that are able to describe bond breaking. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 401 | Multi-task and Uncertainty Prediction of Polymer Properties with Graph Network | Mishra, Ankit; Rajak, Pankaj; Ramprasad, Rampi; Nakano, Aiichiro; Kalia, Rajiv; Vashishta, Priya | Here, we propose a graph-based Bayesian multi-task learning model to inherently capture the relation between multiple properties for a given polymer candidate. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 402 | Efficient construction of linear models in materials modeling and applications to force constant expansions | Fransson, Erik; Eriksson, Fredrik; Erhart, Paul | In this presentation, we analyze the efficacy and efficiency of several state-of-the-art regression and feature selection methods in the context of FC extraction and the prediction of different thermodynamic properties. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 403 | A Molecular-Dynamicist Walks into an Error Bar: Rigorously Quantifying Uncertainties in Simulations of Transport under Confinement | Wang, Gerald; Li, Yuanhao | In this talk, we highlight this principle in the context of a deceptively straightforward problem, namely, computing the diffusion coefficient of a fluid under nanoscale confinement. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 404 | Applying Neural Networks and Gaussian Process Regression to the Transition Structure Factor | Weiler, Laura; Mihm, Tina; Shepherd, James | We explore two machine learning algorithms for analyzing the transition structure factor based on coupled cluster doubles calculations on the uniform electron gas. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 405 | Maxwell + Polarizable MD multi-scale simulation for vibrational spectroscopy | Yamada, Atsushi | We present a novel computational scheme of classical molecular simulation that is unified with Maxwell’s equations based on a multi-scale model to describe the coupled dynamics of light electromagnetic waves and molecules in crystalline solids [1]. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 406 | The Self Learning Kinetic Monte Carlo (SLKMC) method augmented with data analytics for adatom-island diffusion on surfaces | Rahman, Talat | In this talk, I will present results for the diffusion kinetics of two dimensional adatoms islands in two types of systems: homoepitaxial and heteroepitaxial. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 407 | Multiscale reweighted stochastic embedding (MRSE): Deep learning of collective variables for enhanced sampling | Rydzewski, Jakub; Valsson, Omar | We present a new machine learning method called multiscale reweighted stochastic embedding (MRSE) [1] for automatically constructing collective variables (CVs) to represent and drive the sampling of free energy landscapes in enhanced sampling simulations. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 408 | Finite Electron Temperature Density Functional Theory and Neural Network Molecular Dynamics study of Sub Pico-Second Optical Control of Ferroelectric Domains in PbTiO3 based Nanostructuress | Linker, Thomas; Kalia, Rajiv; Nakano, Aiichiro; Nomura, Ken-ichi; Shimojo, Fuyuki; Vashishta, Priya | To study large polar domains common in PbTiO 3 based nanostructures we developed a neural-network force-field model based on ground state DFT and FT-DFT training data. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 409 | A unified Bayesian approach to learning many-body potentials | Vandermause, Jonathan; Kozinsky, Boris | In this talk, we present Bayesian force fields that unite three frameworks—the Atomic Cluster Expansion (ACE), Gaussian Approximation Potentials (GAP), and Spectral Neighbor Analysis Potentials (SNAP)—opening the door to scalable, uncertainty-aware molecular dynamics simulations of complex materials. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 410 | Optimizing Free Energy Estimation with Machine Learning | Wirnsberger, Peter; Ballard, Andrew; Papamakarios, George; Abercrombie, Stuart; Racanière, Sébastien; Pritzel, Alexander; Jimenez Rezende, Danilo; Blundell, Charles | Optimizing Free Energy Estimation with Machine Learning | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 411 | Insights on Bimetallic Surface Dynamics via Automatically Trained Gaussian Process Machine Learning Potentials | Torrisi, Steven; Lim, Jin Soo; Sun, Lixin; Xie, Yu; Vandermause, Jonathan; Kozinsky, Boris | Machine learning force field models enable the study of long time scale molecular dynamics for large systems, but generating and selecting training data used to fit these models is a tedious and challenging task. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 412 | Quantum Monte Carlo of cohesion and excitations in diamond Si: benchmarks | Annaberdiyev, Abdulgani; Wang, Guangming; Mitas, Lubos | We present a study of Si bulk in diamond structure by fixed-node (FN) QMC since systems with Si tend to exhibit some of the smallest FN errors. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 413 | Dynamically consistent coarse-grained models of chemically specific polymer melts via friction parameterization | Johnson, Lilian; Phelan, Frederick | Here, we aim to develop a chemically specific, thermodynamically consistent, and dynamically correct model by combining a conservative potential and a dissipative potential. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 414 | Exploring, fitting, and characterizing the configuration space of materials with multiscale universal descriptors | Bernstein, Noam; Stenczel, Tamas; Csanyi, Gabor | We present heuristics for a universal set of multiscale Smooth Overlap of Atomic Positions (SOAP) descriptors. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 415 | Investigation of global charge distributions for constructing non-local machine learning potentials | Ko, Tsz Wai; Finkler, Jonas; Goedecker, Stefan A; Behler, Jorg | Here we use fourth-generation high-dimensional neural network potentials [3] to illustrate the role of non-local effects and suggest possible improvements for current state-of-the-art MLPs. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 416 | Optimization of the diffusion Monte Carlo nodal surface | McFarland, John; Manousakis, Efstratios | The work presented here explores a novel method that optimizes the location nodal surface from the walker distribution of DMC. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 417 | Orbital optimization in quantum Monte Carlo applied on solids | Luo, Ye | Thus, we enable orbital optimization schemes like rotating an extended set of orbitals and further directly optimizing orbital shapes with much more challenging amount of paramters. | Session 20: Emerging Trends in MD Simulations and Machine Learning |
| 418 | Passive Microrheology of Strongly Attractive Dense Emulsions using Diffusing Wave Spectroscopy | Xu, Yixuan; Scheffold, Frank; Mason, Thomas | We develop an opto-mechanical decorated core-shell network (DCSN) model to determine an effective radius of the DWS probes by analyzing the measured l*( φ) over a wide range of droplet volume fractions, φ, above and below the hard-sphere jamming point. | Session 21: Emulsions and Foams |
| 419 | Generating oil-in-water Pickering emulsions in PDMS to synthesize plasmonic mechanochromic microcapsules | Choe, Sean; Dreyfus, Remi; Leng, Jacques | Here we present microfluidic experiments carried out in search of optimal conditions for stable o/w Pickering emulsions in PDMS. | Session 21: Emulsions and Foams |
| 420 | Spreading of a 2D granular analogue of a liquid puddle: Predicting structure through a “granular capillary length” | Hoggarth, Johnathan; Ono-dit-Biot, Jean-Christophe; Dalnoki-Veress, Kari | Here we present an experiment that allows us to probe the structure of a 2D pile of monodisperse microscopic oil droplets. | Session 21: Emulsions and Foams |
| 421 | Characterizing emulsion formation in Absinthe as a function of temperature | Bickel, Jessica; Ellis, Anna; Resnick, Andrew | Our work examines the emergence of the louche phase in absinthe by measuring the optical transmittance of the solution as a function of ethanol concentration at multiple temperatures. | Session 21: Emulsions and Foams |
| 422 | Continuum model applied to granular analogues of droplets and puddles | Ono-dit-Biot, Jean-Christophe; Lorand, Tanel; Dalnoki-Veress, Kari | The continuum model presented well explains the average growth rate of the aggregates, while the avalanches, which result in discrete growth steps, are a signature of the underlying granular nature of the aggregates. | Session 21: Emulsions and Foams |
| 423 | Exploring energy landscapes experimentally via hyper-dimensional tracking in a ripening emulsion | Rodriguez-Cruz, Clary; Thirumalaiswamy, Amruthesh; Molaei, Mehdi; Riggleman, Robert; Crocker, John | These findings suggest that such hyper-dimensional exploration may find application in the study of other systems with similar dynamics, such as cytoskeleton networks or stock indices. | Session 21: Emulsions and Foams |
| 424 | Dynamic and Structural Heterogeneity of a Jamming Emulsion System | Du, Xin; Weeks, Eric | We experimentally study the jamming behavior of a slowly compressed quasi 2-D emulsion system. | Session 21: Emulsions and Foams |
| 425 | Coarsening Behavior and Coarsening Induced Rearrangements in Very Wet Quasi-2d Foams | Chieco, Anthony; Durian, Douglas | We present preliminary results on identifying the locations of rearrangements and explore using softness and machine learning to predict where/when they occur. | Session 21: Emulsions and Foams |
| 426 | Hydrodynamic fluctuations melt crystals. | LE BLAY, Marine; Bartolo, Denis | In this talk I will show that this seemingly simple question reveals a dramatic role of hydrodynamic interactions in confined liquids. | Session 21: Emulsions and Foams |
| 427 | Stratification in micellar foam films as a probe for intermicellar interactions | Ochoa, Chrystian; Gao, Shang; Srivastava, Samanvaya; Sharma, Vivek | Here, we show that foam films formed by aqueous micellar solutions of NaN exhibit step-wise thinning or stratification, due to the influence of non-DLVO forces, including supramolecular oscillatory structural forces. | Session 21: Emulsions and Foams |
| 428 | In sheared highly polydisperse emulsions, large droplets cause trouble for smaller droplets | Weeks, Eric | We study experiments and simulations of highly polydisperse emulsions under shear flow. | Session 22: Flow and Structure in Dense Suspensions |
| 429 | Fingering instabilities in confined suspensions | LUO, RUI; Chen, Yun; Lee, Sungyon | To qualitatively describe our experimental observations, we seek a kinetic theory that implements long-range hydrodynamic interactions. | Session 22: Flow and Structure in Dense Suspensions |
| 430 | Force networks in shear thickening suspensions | Morris, Jeffrey | Results from persistent homology tools, k-core analysis, and tools of statistical mechanics will be presented to elucidate some new features of dense suspension shear thickening. | Session 22: Flow and Structure in Dense Suspensions |
| 431 | Conching chocolate as a protoypical example of poweder incorporation | Poon, Wilson; Blanco, Elena; Hodgson, Daniel; Hermes, Michel; Besseling, Rut; Hunter, Gary; Chaikin, Paul; Cates, Michael; Van Damme, Isabella | Studying the rheology of a simplified formulation, we find that the input of mechanical energy and staged addition of surfactants combine to effect a consid- erable shift in the jamming volume fraction of the system, thus increasing the maximum flowable solid content. | Session 22: Flow and Structure in Dense Suspensions |
| 432 | Suspensions of non-Brownian particles in complex fluids: Rheology, microstructure and fluid mechanics | Hormozi, Sarah | This talk will introduce an array of experimental and modeling techniques that my research team uses to investigate rheological properties and fluid dynamical behavior of the complex slurries. | Session 22: Flow and Structure in Dense Suspensions |
| 433 | Smectic Description of Wrinkle Patterns | Aharoni, Hillel | In this talk I will show how an effective energy functional for the envelope of a wrinkle pattern emerges from coarse graining the elastic energy. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 434 | Exact solutions for wrinkle patterns from geometrically incompatible confinement | Tobasco, Ian; Timounay, Yousra; Todorova, Desislava; Leggat, Graham; Paulsen, Joseph; Katifori, Eleni | We present a simple yet complete set of geometric rules for determining the direction of wrinkling that emerges in a general spherical or saddle-shaped shell. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 435 | Modeling the behavior of inclusions in circular plates undergoing 2D-to-3D shape changes | Oshri, Oz; Biswas, Santidan; Balazs, Anna | We derive an analytical model that predicts the 2D-to-3D shape transitions in the system. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 436 | Developable zig-zag wrinkling in a thin annulus contracted inwards | Pal, Anshuman; Pocivavsek, Luka; Witten, Thomas | In this work, we analyse a novel geometric Lamé system that displays such a strain-free state of azimuthal wrinkling. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 437 | Wrinkling of viscous bubble films | Oratis, Alexandros; Bush, John; Stone, Howard; Bird, James | Here we show that the underlying wrinkling dynamics of viscous films are similar to those in elastic sheets. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 438 | Two instabilities underlying curvature-induced delamination patterns | Davidovitch, Benjamin; Box, Finn; Demery, Vincent; Vella, Dominic | We present experimental results that support the existence of distinct instability mechanisms for curvature-induced delamination. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 439 | Measuring the lift-off force for d cones | Guo, Tianyi; Zheng, Xiaoyu; Palffy-Muhoray, Peter | We have measured the force as function of displacement of the cone center for Mylar disks, and determined the lift-off force as function of radius and thickness. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 440 | Finite Curved Creases in Infinite Isometric Sheets | Mowitz, Aaron; Witten, Thomas | We address this question by modeling the observed crescent with a more geometric approach: we treat the crescent as a curved crease in an isometric sheet. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 441 | Instability of thin sheets under torque-free geometrically-incompatible confinement | Xin, Meng; Davidovitch, Benjamin | We study a weak GIC problem, generated by a contractile inclusion, which gives rise to buckling instability. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 442 | Counting wrinkles on cones | Zhang, Xiaoxiao; Paulsen, Joseph; Zhang, Teng | For small cone angles, we observe a hierarchical pattern with defect-free zones (constant wrinkle wavelength) separated by defect-rich zones where new wrinkles emerge. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 443 | Curvature-Driven Propulsion of Floating Films | Ripp, Monica; Paulsen, Joseph | We focus on a model system where a thin polymer film (~100 nm) is confined to the curved water interface in an overfilled petri dish. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 444 | Solid Domains on Giant Lipid Vesicles: Growth of 2D Crystals on Curved Surfaces | Wan, Hao; Santore, Maria | In this study, we investigate how solid lipid domains grow in the nanometrically-thin bilayer membranes of giant unilamellar vesicles and how the growth pattern results from the interplay of membrane tension and curvature. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 445 | On leaves, flowers, and sea slugs | Venkataramani, Shankar | I will discuss recent advances in the mathematics and mechanics of hyperbolic NEP, emphasizing the connections between the math and the ‘extreme’ mechanical properties of hyperbolic NEP that might explain their ubiquity in natural objects. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 446 | Frustrated Euclidean ribbons: a new class of geometric frustration | Siefert, Emmanuel; Levin, Ido; Maor, Cy; Sharon, Eran | Here we report on a new type of geometrical frustration, one that exists in sheets that satisfy Gauss’s theorem. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 447 | Prediction of the buckling capacity of thin shells by using stability landscapes | Yadav, Kshitij; Cuccia, Nicholas; Virot, Emmanuel; Rubinstein, Shmuel; Gerasimidis, Symeon | A novel approach is proposed, which provides an accurate prediction of cylindrical shells’ buckling capacity without measuring the imperfections. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 448 | Universal Features of Buckling Initiation in Thin Shells | Cuccia, Nicholas; Yadav, Kshitij; Virot, Emmanuel; Gerasimidis, Symeon; Rubinstein, Shmuel | Universal Features of Buckling Initiation in Thin Shells | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 449 | Static equilibria and bifurcations of interlaced bigon rings | Yu, Tian; Dreier, Lauren; Marmo, Francesco; Gabriele, Stefano; Adriaenssens, Sigrid | We propose a numerical framework to study mechanics of elastic strip networks. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 450 | Delayed bifurcation in elastic snap-through | Liu, Mingchao; Gomez, Michael; Vella, Dominic | By combining numerical simulation and asymptotic analysis, we investigate when and how the arch transitions between two stable states and show that the end-shortening at which the fast ‘snap’ happens depends on the rate at which the end-shortening is reduced. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 451 | Delayed pressure buckling of viscoelastic spherical shells | Stein-Montalvo, Lucia; Holmes, Douglas; Coupier, Gwennou | With fast-switching devices in mind, we performed dynamic pressure buckling experiments on defect-seeded spherical shells made of a common silicone elastomer. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 452 | Mechanics and geometry of nonlinear cracks: A complex stress-function approach | Szachter, Oran; Moshe, Michael; Katzav, Eytan | Here we present a new method that allows us to generalise the complex function approach to nonlinear elasticity. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 453 | Snap buckling in overhand knots | Tong, Dezhong; Khalid Jawed, Mohammad | In order to gain physical insight into the process, we employ scaling analysis on elastic energies and investigate the role of various physical ingredients on inversion. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 454 | Bifurcation of pre-buckled bands under lateral transverse shear | Huang, Weicheng; Khalid Jawed, Mohammad | To capture their geometrically nonlinear deformations, we develop several discrete differential geometry-based numerical frameworks. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 455 | Snap buckling of active bistable beams under magnetic actuation | Abbasi, Arefeh; Yan, Dong; Reis, Pedro | We demonstrate that the snap buckling of our magnetic beams can be triggered in the presence of an external uniform magnetic field. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 456 | Stabilization of a heavy particle on a vibrating soft ribbon | Abramian, Anaïs; Protière, Suzie; Lazarus, Arnaud | Here, as a first step towards the modelisation of this coupling, we propose a 1D-version of the system, where a bead is bouncing on a narrow elastic ribbon. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 457 | Diffusion stimulated snap-through inversion of an elastic hemispherical shell | Park, Ji Sung; Kim, JunSeong; Lee, Anna; Kim, Ho-Young | Upon combining our theory with experiments of various geometry of thin shells, we suggest a novel model for snap-through inverting shells for both biologists and toy enthusiasts. | Session 23: Geometrically-Frustrated Instabilities in Solid Mechanics |
| 458 | Impact of adhesion on the shape and rearrangements of biomimetic emulsions in static and dynamical packings | Montel, Lorraine; Golovkova, Iaroslava; Wandersman, Elie; Prevost, Alexis; Bertrand, Thibault; Pontani, Léa-Laetitia | We developed adhesive emulsions as a simpler and more controlled model system to study the role of adhesion in tissue mechanics. | Session 24: Glassy Dynamics: From Simple Models to Biological Tissues |
| 459 | Assessing the connection between cellular rearrangements and local structure using information in models of biological tissues. | Tah, Indrajit; Sharp, Tristan; Liu, Andrea; Sussman, Daniel | We push this further to use structural information to predict the mobility of individual cells, identifying a linear combination of local structural features, "softness," that is strongly predictive of cell rearrangements. | Session 24: Glassy Dynamics: From Simple Models to Biological Tissues |
| 460 | Local rotational dynamics reveals strain dependence in amorphous particle packings | Wang, Dong; Nejadsadeghi, Nima; Misra, Anil; Li, Yan; Shekhar, Shashi; Dijksman, Joshua | We study the dynamics of rotations in sheared amorphous quasi-two-dimensional disk packings at various friction coefficients and packing densities. | Session 24: Glassy Dynamics: From Simple Models to Biological Tissues |
| 461 | Direct experimental evidence for the Gardner transition in a colloidal glass | Schwen, Eric; Ramaswamy, Meera; Liarte, Danilo; Cohen, Itai | Here, we present experiments aimed at directly observing the predicted metastable states of the Gardner phase in a colloidal glass. | Session 24: Glassy Dynamics: From Simple Models to Biological Tissues |
| 462 | Glassy dynamics in the hard matrix model | Kent-Dobias, Jaron; Elser, Veit | We introduce the hard matrix model (HMM) which consists of an orthogonal matrix exploring an energy landscape proportional to its 1-norm. | Session 24: Glassy Dynamics: From Simple Models to Biological Tissues |
| 463 | Non-Equilibrium Universal Features of Annealing and Aging in Granular Piles, | Gago, Paula; Boettcher, Stefan | We explore the compaction dynamics of a granular pile after a hard quench from a liquid into the glassy regime. | Session 24: Glassy Dynamics: From Simple Models to Biological Tissues |
| 464 | The Distribution of Distances to Instabilities of Jammed Packings of Frictionless Spheres Under Load | Boltz, Horst-Holger; Xu, Ding; Xu, Ning; Liu, Andrea | We study an athermal, jammed packing of frictionless soft spheres to revisit the contribution of local (fold) instabilities to the vibrational density of states D(ω). | Session 24: Glassy Dynamics: From Simple Models to Biological Tissues |
| 465 | Mechanism of Clogging in Microfluidic Devices | Wilson, Abigail; Holway, Sydney; Coons, Thomas; Guasto, Jeffrey; Atherton, Tim | Complemented by high-speed imaging of microfluidic experiments, we develop a computational model of clog formation that accounts for hydrodynamic and steric surface interactions. | Session 24: Glassy Dynamics: From Simple Models to Biological Tissues |
| 466 | Direct Measurements of the Complexity of the Sphere Packing Energy Landscape | Beale, Valerie; Corwin, Eric | We approximate this landscape as that of frictionless spheres and characterize their energy landscape by enumerating the local minima found within randomly chosen small volumes. | Session 24: Glassy Dynamics: From Simple Models to Biological Tissues |
| 467 | How active deformation of cells can induce a fluidization transition in biological tissues | Le Goff, Magali; Bertin, Eric; Martens, Kirsten | Inspired by the physics of driven amorphous materials, we introduce a novel active elasto-plastic model at the mesoscopic scale based on a coarse-graining of the particle-based model [1]. | Session 24: Glassy Dynamics: From Simple Models to Biological Tissues |
| 468 | Elasto-plasticity Mediates Avalanche Dynamics in Supercooled Liquids Below the Mode-Coupling Temperature | Chacko, Rahul; Landes, François; Biroli, Giulio; Dauchot, Olivier; Liu, Andrea; Reichman, David | In this talk, we show that this scenario of elastically-triggered avalanches applies to the dynamics of a model two-dimensional supercooled liquid below the mode-coupling temperature. | Session 24: Glassy Dynamics: From Simple Models to Biological Tissues |
| 469 | Dionysian Hard Sphere Packings are Mechanically Stable at Vanishingly Low Densities | Dennis, Robert; Corwin, Eric | Nevertheless, we construct hard sphere packings that have asymptotically zero density and yet maintain finite strength, thus achieving an unbounded strength-to-weight ratio. | Session 24: Glassy Dynamics: From Simple Models to Biological Tissues |
| 470 | Monte Carlo Suite for the Atomistic Simulation of Polymer-Based Interfacial and Nanocomposite Systems | Herranz, Miguel; Ramos, Pablo; Martinez Fernandez, Daniel; Benito, Javier; Karayiannis, Nikos; Laso, Manuel | We present a Monte Carlo (MC) protocol for the atomistic simulation of polymer-based systems. | Session 24: Glassy Dynamics: From Simple Models to Biological Tissues |
| 471 | Controlling Rheology via Boundary Conditions in Dense Granular Flows | Fazelpour, Farnaz; Daniels, Karen | We characterize the properties of granular slip at the boundaries, and investigate which aspects of a dense granular flow can be controlled by the choice of boundary condition. | Session 25: Granular Flows Beyond Simple Mechanical Models |
| 472 | Quantifying the influence of rolling friction on force networks and rheology in sheared suspensions | Singh, Abhinendra; Basak, Rituparna; De Pablo, Juan; Kondic, Lou; Jaeger, Heinrich | We will present the comparison between the statistics of the evolution of the force network in different systems and how different constraints affect the rheology of a dense suspension. | Session 25: Granular Flows Beyond Simple Mechanical Models |
| 473 | Generalized Constitutive Modeling of Granular Materials near the Flow-Arrest Transition | Srivastava, Ishan | I will describe our general tensorial constitutive model that suitably captures these features. | Session 25: Granular Flows Beyond Simple Mechanical Models |
| 474 | Power-Law Scaling in Granular Rheology | Kim, Seongmin; Kamrin, Kenneth | We propose a new form of the constitutive equation for simple granular materials which is independent of packing fraction. | Session 25: Granular Flows Beyond Simple Mechanical Models |
| 475 | Pressure-dependent shear modulus of jammed packings of non-spherical particles | Zhang, Jerry; VanderWerf, Kyle; Shattuck, Mark; O’Hern, Corey | Here, we generate jammed packings of circulo-lines in two spatial dimensions (2D) and study their mechanical response. | Session 25: Granular Flows Beyond Simple Mechanical Models |
| 476 | Results that stick: how adhesive particle properties affect their collective flow behavior | Farmani, Zohreh; Dijksman, Joshua; Wieringa, Jan | We used ceramic microparticles with a size distribution between 10-100 micrometer; these particles are base materials for porcelain stoneware. | Session 25: Granular Flows Beyond Simple Mechanical Models |
| 477 | Flow and clogging behavior of mixtures of low-friction soft and frictional rigid spheres in a quasi-two-dimensional silo | Fan, Bo; Wang, Jing; Pongó, Tivadar; Harth, Kirsten; Trittel, Torsten; Stannarius, Ralf; Illig, Maja; Hidalgo, Raúl; Börzsönyi, Tamás | Here we show that the addition of a small amount of frictional hard beads to an ensemble of low-friction deformable beads already has significant consequences. | Session 25: Granular Flows Beyond Simple Mechanical Models |
| 478 | Rheology of suspensions in the thermal crossover: an incline plane experiment under confocal observation. | Billon, Alice; Dauchot, Olivier; Forterre, Yoël; Pouliquen, Olivier | We compare the experimental velocity profiles with a theoretical model that extends to pressure-imposed conditions the model of Ikeda et al [2] for the rheology of soft and brownian suspensions at the cross-over of the glass and jamming transition. | Session 25: Granular Flows Beyond Simple Mechanical Models |
| 479 | Discharge Rate of a Silo with Rotating Bottom | Pongó, Tivadar; Hernández-Delfin, Dariel; To, Kiwing; Börzsönyi, Tamás; Hidalgo, Raúl | Our study sheds light on the cause of this peculiar behavior. | Session 25: Granular Flows Beyond Simple Mechanical Models |
| 480 | Localized Airflow Fluidization During Granular Intrusion | Karsai, Andras; Goldman, Daniel | We investigate in both experiment and CFD-DEM simulations how rapid downward airflow from an intruder’s tip can create transient cavities in the media and help reduce resistive force for cylindrical intruders of 3 cm diameter in both 425-850 micron granular sand and 3 mm glass beads. | Session 25: Granular Flows Beyond Simple Mechanical Models |
| 481 | Impact of loading geometry on steady-state flow of frictional granular packings | Lechman, Jeremy; Clemmer, Joel; Srivastava, Ishan; Grest, Gary | Studies of granular rheology often focus on a single loading geometry or stress state such as simple shear. | Session 25: Granular Flows Beyond Simple Mechanical Models |
| 482 | Dry granular rheology microstructure with rotational constraints | Santos, Andrew; Srivastava, Ishan; Silbert, Leo; Lechman, Jeremy; Grest, Gary | Dry granular rheology microstructure with rotational constraints | Session 25: Granular Flows Beyond Simple Mechanical Models |
| 483 | Unraveling the relationship between dense suspension flow and particle and solvent identity | Van der Naald, Michael; Jackson, Grayson; Jaeger, Heinrich | Recent studies have explored how their non-Newtonian flow behaviors can be manipulated by changing the suspending solvent[1], particle surface chemistry[2], and particle size[3], but a parametric study of all three factors has yet to be performed. | Session 25: Granular Flows Beyond Simple Mechanical Models |
| 484 | Polymer – nanocomposites at rest and under deformation: structure of the nanofillers, conformation of the chains, and related mechanical reinforcement. | Boué, François | We review our work from Laboratory Léon Brillouin, associated groups, and other groups in the world, on the structure of polymer-nanoparticles composites, under deformation, in relation with mechanical properties improvement of plastics. | Session 26: Hierarchical Structural Emergence in Elastomer Nanocomposites: Dispersion, Dynamics, Structure, Modeling, and Simulation |
| 485 | X-ray Photon Correlation Spectroscopy Study of Filled Rubber Under Dynamic Strain Reveals New Details of the Connection Between Filler Network Change and Filler Surface Chemistry | Presto, Dillon; Narayanan, Suresh; Moctezuma, Sergio; Sutton, Mark; Foster, Mark | We can explain this behavior by considering the structure and debonding of bound rubber layers. | Session 26: Hierarchical Structural Emergence in Elastomer Nanocomposites: Dispersion, Dynamics, Structure, Modeling, and Simulation |
| 486 | Structural emergence, correlations and quantification of dispersion for surface-modified, aggregated, fumed silica in polymer nanocomposites | McGlasson, Alex; Rishi, Kabir; Pallerla, Lahari; Beaucage, Greg; Kuppa, Vikram; Ilavsky, Jan | Structural emergence, correlations and quantification of dispersion for surface-modified, aggregated, fumed silica in polymer nanocomposites | Session 26: Hierarchical Structural Emergence in Elastomer Nanocomposites: Dispersion, Dynamics, Structure, Modeling, and Simulation |
| 487 | The effect of surface modification on interfacial properties of polyisoprene/silica systems: an atomistic simulation study | Li, Wei; Bačová, Petra; Jana, Pritam; Burkhart, Craig; Polinska, Patrycja; Harmandaris, Vagelis; Doxastakis, Manolis | In this work, we present an investigation of silane modification effects on polymer interfacial properties using atomistic simulations. | Session 26: Hierarchical Structural Emergence in Elastomer Nanocomposites: Dispersion, Dynamics, Structure, Modeling, and Simulation |
| 488 | Microscopic Structure and Dynamics of Attractive Polymer Nanocomposites | Kim, Jihyuk; Faraone, Antonio; Wagner, Norman; Jayaraman, Arthi | Here, silica nanoparticles (SiO 2) in various shapes and sizes are investigated as model attractive PNC using scattering methods and rheology to connect the molecular level structure and dynamics to the macroscopic property. | Session 26: Hierarchical Structural Emergence in Elastomer Nanocomposites: Dispersion, Dynamics, Structure, Modeling, and Simulation |
| 489 | Evolution of Nanofiller Microdynamics During Stress Relaxation Revealed by X-ray Photon Correlation Spectroscopy | Foster, Mark; Presto, Dillon; Meyerhofer, John; Narayanan, Suresh; Jan, Ilavsky; Moctezuma, Sergio; Sutton, Mark | Evolution of Nanofiller Microdynamics During Stress Relaxation Revealed by X-ray Photon Correlation Spectroscopy | Session 26: Hierarchical Structural Emergence in Elastomer Nanocomposites: Dispersion, Dynamics, Structure, Modeling, and Simulation |
| 490 | Nanoparticle Dispersion and Hierarchical Structure in Polymer Nanocomposites: Insights from Dissipative Particle Dynamics (DPD) Simulation | Gogia, Ashish; Rishi, Kabir; McGlasson, Alex; Beaucage, Greg; Kuppa, Vikram | In this research, we perform Dissipative Particle Dynamics (DPD) simulation of these blends, varying polymer-polymer interaction energy, to understand the hierarchical structure and dispersion over multiple length and timescales. | Session 26: Hierarchical Structural Emergence in Elastomer Nanocomposites: Dispersion, Dynamics, Structure, Modeling, and Simulation |
| 491 | A model for equilibrium clustering and its application to multi-hierarchical growth. | Beaucage, Greg; Rishi, Kabir; Mulderig, Andrew; Vogtt, Karsten | Using an equilibrium model, the free energy change associated with clustering can be determined (Vogtt 2019, Mulderig 2019). | Session 26: Hierarchical Structural Emergence in Elastomer Nanocomposites: Dispersion, Dynamics, Structure, Modeling, and Simulation |
| 492 | A Coarse-Grained Model of Epoxy Network Polymers for Large Scale Molecular Dynamic Simulations | Hao, Xi; Wen, Chengyuan; Seidel, Gary; Cheng, Shengfeng | A coarse-grained (CG) model is developed to allow large-scale molecular dynamics simulations of epoxy network polymers based on EPON resin 862 and diethyltoluenediamine (DETDA). | Session 26: Hierarchical Structural Emergence in Elastomer Nanocomposites: Dispersion, Dynamics, Structure, Modeling, and Simulation |
| 493 | Role of Nanoparticle Self-Assembly on Polymer Spherulitic Growth Kinetics | Altorbaq, Abdullah; Jimenez, Andrew; Pribyl, Julia; Benicewicz, Brian; Muller, Alejandro; Kumar, Sanat | Role of Nanoparticle Self-Assembly on Polymer Spherulitic Growth Kinetics | Session 26: Hierarchical Structural Emergence in Elastomer Nanocomposites: Dispersion, Dynamics, Structure, Modeling, and Simulation |
| 494 | Nano-particle dispersion and crystal structure in semi-crystalline polymer nano-composites | Camara, Michael; Beaucage, Greg; Rishi, Kabir; Ilavsky, Jan; Kuzmenko, Ivan; Mehta, Sameer; Keller, Doug | In this study, dispersion is quantified through the use of x-ray scattering on high density polylethylene (HDPE)/N110 carbon black composites produced by different melt mixing techniques. | Session 26: Hierarchical Structural Emergence in Elastomer Nanocomposites: Dispersion, Dynamics, Structure, Modeling, and Simulation |
| 495 | 3D Structural Visualization from Polymer Nanocomposite Scattering | Rishi, Kabir; Beaucage, Greg; Mulderig, Andrew; McGlasson, Alex; Kuppa, Vikram; Rackaitis, Mindaugas | 3D Structural Visualization from Polymer Nanocomposite Scattering | Session 26: Hierarchical Structural Emergence in Elastomer Nanocomposites: Dispersion, Dynamics, Structure, Modeling, and Simulation |
| 496 | Coarse-grained models for predicting the morphology of polymer nanocomposites containing nanorod fillers | lu, shizhao; wu, zijie; Jayaraman, Arthi | In this talk, we will address this knowledge gap. | Session 26: Hierarchical Structural Emergence in Elastomer Nanocomposites: Dispersion, Dynamics, Structure, Modeling, and Simulation |
| 497 | How stochastic thermodynamics changes in systems with multiple interacting components | Wolpert, David | In this talk I summarize the many ways that the form of that directed graph modifies the standard results of stochastic thermodynamics. | Session 27: Irreversible Dynamics, Aging and Death: From Cells to Organisms |
| 498 | A minimal one-dimensional model of pattern formation in bacterial community phototaxis | Vallomparambath PanikkasserySu, Ritwika; Man Wah Chau, Rosanna; Ursell, Tristan; Bhaya, Devaki; Huang, Kerwyn; Gopinathan, Ajay | We propose a one-dimensional analytical model to predict the critical value of the phototactic bias force for instabilities to manifest as finger-like projections. | Session 27: Irreversible Dynamics, Aging and Death: From Cells to Organisms |
| 499 | Scale invariance of bacterial cell size fluctuations during starvation | Shimaya, Takuro; Okura, Reiko; Wakamoto, Yuichi; Takeuchi, Kazumasa | Here, by developing a microfluidic device that realizes a uniform and switchable environment for dense bacterial populations, we observe the morphological response of growing E. coli cells against abrupt starvation [2]. | Session 27: Irreversible Dynamics, Aging and Death: From Cells to Organisms |
| 500 | Spatio-Temporal Supercontinuum Growth Spectroscopy of Rhodobacter Sphaeroides | Kilinc, Mehmet; Wan, Jacky; Kuhlman, Thomas; Gabor, Nathaniel; Cogdell, Richard | Here, we present a novel method, called Spatio-Temporal Supercontinuum Growth Spectroscopy (STSGS), that combines broadband supercontinuum excitation and real-time laser probes of microbial growth in highly controlled environments. | Session 27: Irreversible Dynamics, Aging and Death: From Cells to Organisms |
| 501 | Accumulation of dead cells from contact killing facilitates coexistence in bacterial biofilms | Steinbach, Gabi; Crisan, Cristian; Ng, Siu; Hammer, Brian; Yunker, Peter | Instead, we find that contact killing can facilitate coexistence between nominally antagonistic strains. | Session 27: Irreversible Dynamics, Aging and Death: From Cells to Organisms |
| 502 | Age-related loss of gene-to-gene transcriptional coordination among single cells. | Levy, Orr; Amit, Guy; Vaknin, Dana; Snir, Tom; Efroni, Sol; Castaldi, Peter; Liu, Yang-Yu; Cohen, Haim; Bashan, Amir | Here, we propose a new approach for analysing transcriptional regulation in single-cell RNA sequencing data by focusing on the global coordination between the genes rather than the variability of individual genes or correlations between pairs of genes. | Session 27: Irreversible Dynamics, Aging and Death: From Cells to Organisms |
| 503 | Who Is to Thank for the Rhythms of My Tail? – A Mathematical Study of Circadian Rhythmicity in Poly(A) Tail Length | Yao, Xiangyu; Kojima, Shihoko; Chen, Jing | Here we constructed a parsimonious model to investigate rhythmic control of poly(A) tail length as a coupled process to rhythmic mRNA expression. | Session 27: Irreversible Dynamics, Aging and Death: From Cells to Organisms |
| 504 | Development of phenotypic heterogeneity in different environmental niches in Mycobacterium tuberculosis | Aldridge, Bree; Amir, Ariel; Levien, Ethan; Kar, Prathitha; McNellis, Morgan; Chung, Eun Seon; Kamkaew, Maliwan; Smith, Trever | We describe how mycobacteria deterministically generate diversity in their growth characteristics through asymmetric growth and division. | Session 27: Irreversible Dynamics, Aging and Death: From Cells to Organisms |
| 505 | Biophysical principles of the Chlamydomonas reinhardtii CO2-concentrating mechanism | Fei, Chenyi; Wilson, Alexandra; Mangan, Niall; Jonikas, Martin; Wingreen, Ned | To better understand how this CCM works, we developed a multi-compartment reaction-diffusion model. | Session 27: Irreversible Dynamics, Aging and Death: From Cells to Organisms |
| 506 | E. coli Bacteria near "Black Hole" | Phan, Trung; Austin, Robert; Gou, Buming; Chaikin, Paul; Martiniani, Stefano | In microfluidic environment, we create hydrodynamic horizon from which no E. coli bacteria can escape ("black hole") to study the collective behaviors of those organisms under the influence of such background, probing for their strategy to avoid potentially harmful region where part of the population disappears. | Session 27: Irreversible Dynamics, Aging and Death: From Cells to Organisms |
| 507 | Kinetic theory of topological defects in active nematics | Marchetti, M Cristina | In this talk I will show that, focusing on the defects as the relevant quasiparticles driving the non-equilibrium dynamics, we can formulate a kinetic theory of the active defect gas and describe the onset of active turbulence as activity-driven defect unbinding. | Session 28: Kinetic Theory and Its Applications in the Physical, Biological and Social Sciences |
| 508 | Kinetic theory for financial Brownian motion: a microscopic model based on forex data analysis and its mean-field theory | Kanazawa, Kiyoshi | In this presentation, we will show our recent kinetic approach (K. Kanazawa et al., PRL 2018; PRE 2018) to financial Brownian motion in the context of high-frequency data analyses. | Session 28: Kinetic Theory and Its Applications in the Physical, Biological and Social Sciences |
| 509 | Brownian motion in confinement | Lavaud, Maxime; Soulard, Pierre; Bertin, Vincent; Dean, David; Sarfati, Raphael; Raphael, Elie; Louyer, Yann; Salez, Thomas; Amarouchene, Yacine | Here, we study the diffusion of micrometer-sized beads in water confined between two walls that are separated by a micrometric distance. | Session 28: Kinetic Theory and Its Applications in the Physical, Biological and Social Sciences |
| 510 | Learning developmental mode dynamics from single-cell trajectories | Romeo, Nicolas; Mietke, Alexander; Hastewell, Alasdair; Dunkel, Jorn | Here, we have combined mode decomposition ideas that have proved successful in condensed matter and fluid physics with sparse dynamical systems inference to learn interpretable biophysical models from single-cell imaging data. | Session 28: Kinetic Theory and Its Applications in the Physical, Biological and Social Sciences |
| 511 | Designing nanoparticles as glues for hydrogels: insights from a microscopic model | Molinari, Nicola; Jung, Guwon; Angioletti-Uberti, Stefano | We use coarse-grained modeling and (non-equilibrium) molecular dynamics simulations to study how the interface adhesion between two hydrogels can be strengthened by the presence of nanoparticles. | Session 28: Kinetic Theory and Its Applications in the Physical, Biological and Social Sciences |
| 512 | Transport regimes for Brownian particles in a tilted washboard potential, re-revisited | Jiron, Trey; Schiffbauer, Jarrod; Prinster, Marygrace | This presentation focuses on extensive numerical studies of the problem of a Brownian particle being driven through a 1D periodic “tilted washboard” potential. | Session 28: Kinetic Theory and Its Applications in the Physical, Biological and Social Sciences |
| 513 | Liquid crystals microlens array using chiral ligand capped Au nanoparticles | Perera, Kelum; Nemati, Ahlam; Mann, Elizabeth; Hegmann, Torsten; Jakli, Antal | Here we present the optical properties of microlenses array by addition of chiral nanoparticles. | Session 29: Liquid Crystals |
| 514 | Manipulation of the nanoscale heliconical structure of a twist-bend nematic material with polarized purple light | Feng, Chenrun; Feng, Jun; Saha, Rony; Arakawa, Yuki; Gleeson, James; Sprunt, Samuel; Zhu, Chenhui; Jakli, Antal | This research shows the first evidence of using polarized light to manipulate nanoscale heliconical structure of a twist bend nematic liquid crystal dimer containing both sulfur atoms and an azo linkage by tender X-ray scattering. | Session 29: Liquid Crystals |
| 515 | Frank elasticity driven gelation and aging of self-assembled nanoparticle capsules | GIREESAN SUDHA, DEVIKA; Ochoa Hernandez, Jocelyn; Hirst, Linda | Here we report the one pot synthesis of colloidal aggregates in nematic liquid crystal brought about by the isotropic to nematic phase transition. | Session 29: Liquid Crystals |
| 516 | Defect evolution in the smectic-A to nematic phase transition at undulated surfaces | Garcia, Jane Bernadette Denise; O’Keefe, Mackenzie; Gharbi, Mohamed Amine; Beller, Daniel | Using Landau-de Gennes free energy minimization, we determine the presence of metastable defect states at surfaces with 1D and 2D height undulations. | Session 29: Liquid Crystals |
| 517 | Liquid Crystal Phases of Colloidal Mixtures of Ferromagnetic and Non-magnetic Nanoplates | Shuai, Min; Smith, Gregory; Zhu, Chenhui; Glaser, Matthew; MacLennan, Joseph; Clark, Noel | Here, we study liquid crystal phase behavior of colloidal mixtures of ferromagnetic barium hexaferrite and non-magnetic, exfoliated monolayer zirconium phosphate nanoplates. | Session 29: Liquid Crystals |
| 518 | Origins of polar order in the ferroelectric nematic phase | Dong, Dengpan; Clark, Noel; Glaser, Matthew; Bedrov, Dmitry | Origins of polar order in the ferroelectric nematic phase | Session 29: Liquid Crystals |
| 519 | Directed assembly of gold nanoparticles in smectic liquid crystals at curved interfaces | O’Keefe, Mackenzie; Garcia, Jane; Beller, Daniel; Gharbi, Mohamed Amine | In this way, we show that, by engineering precise surface topographies, we can direct the assembly of nanoparticles into complex structures using liquid crystals. | Session 29: Liquid Crystals |
| 520 | Hierarchical assembly of defects in smectic liquid crystals at curved interfaces | Preusse, Ryan S.; Gharbi, Mohamed Amine | We demonstrate new methods for assembling FCDs and disclinations into hierarchical structures. | Session 29: Liquid Crystals |
| 521 | Azimuthal surface anchoring of a nematic on the patterned azobenzene alignment substrate | Padmini, Haputhanthrige Nilanthi; Rajabi, Mojtaba; Lavrentovich, O | Here we characterize the strength of azimuthal surface anchoring produced by the recently developed photoalignment technique based on plasmonic metamsaks [1]. | Session 29: Liquid Crystals |
| 522 | Custom-made actuation driven by “smooth yet complex” liquid crystal director microstructures | Gimenez-Pinto, Vianney; Aharoni, Hillel | Analytical techniques have successfully determined custom-made 3-D liquid crystal director configurations that encode the actuation of a thin LCE film to an arbitrary target morphology. | Session 29: Liquid Crystals |
| 523 | The interplay between spatial and heliconical bond order in twist-bend nematic materials | Saha, Rony; Feng, Chenrun; Welch, Christopher; Mehl, Georg; Feng, Jun; Zhu, Chenhui; Gleeson, James; Sprunt, Samuel; Jakli, Antal | We find that below the nematic (N) to NTB transition the positional correlations drop significantly, while the bond-order correlations increase from zero to about 60 nm. | Session 29: Liquid Crystals |
| 524 | Analog of the Frank-Read Source in Nematic Liquid Crystals | Long, Cheng; Selinger, Robin; Selinger, Jonathan | To understand this finding, we develop a simple theory based on the free energy of the system, and explain the behavior of this nematic Frank-Read source by the balance of the Peach-Koehler force and the tension of the disclination line. | Session 29: Liquid Crystals |
| 525 | Analysis of Self-Assembled Nanoparticle Capsules via Phase Transition of Liquid Crystal Droplets and their Predicted Defect Pattern | Abu-Hijleh, Ibrahim; Beller, Daniel; Hirst, Linda | We observed three different final configurations that were determined by the ratio of the system size to the anchoring extrapolation length. | Session 29: Liquid Crystals |
| 526 | Interactions and dynamics of oil and ferromagnetic droplets on 2D Smectic Films | Hedlund, Keith; Park, Cheol; MacLennan, Joseph; Clark, Noel | We will present the behavior of collective systems of these isotropic oil and ferromagnetic inclusions on 2D films, including their equilibrium spatial organization and interactions, and their shape evolution as a function of applied electric and magnetic field in both smectic A and smectic C phase films | Session 29: Liquid Crystals |
| 527 | Nanocomposite of a ferroelectric liquid crystal and a magnetic nanoparticle: observation of changes in the ordering inside a droplet as function of applied electric field | Martinez-Miranda, Luz; Romero-Hasler, Patricio; Kurihara, Lynn; Mair, Lamar; Weinberg, Irving; Soto-Bustamante, Eduardo | We present the evolution of the ordering of the droplet as the electric field is increased. | Session 29: Liquid Crystals |
| 528 | Nematic Colloids at Liquid Crystal-Air Interfaces via Photopolymerization | Wei, Xiaoshuang; Sbalbi, Nicholas; Bradley, Laura | Here, we demonstrate simultaneous synthesis and assembly of colloidal assemblies at LC-air interfaces. | Session 29: Liquid Crystals |
| 529 | Absence of nematic quasi-long-range order in two-dimensional liquid crystals with three director components | Diouane, Youness | The Lebwohl-Lasher model describes the isotropic-nematic transition in liquid crystals. | Session 29: Liquid Crystals |
| 530 | Nematic bits and logic gates | Kos, Ziga | We introduce nematic bits [1] by using a quaternionic mapping [2,3] from nematic defects to a Bloch sphere. | Session 29: Liquid Crystals |
| 531 | Lipid islands on liquid crystal shells | Sharma, Anjali; Gupta, Deepak; Scalia, Giusy; Lagerwall, Jan | Here we show that lipids adsorbing onto LC shells phase separate and form condensed monolayer islands, inducing a locally distorted LC director field that reveals their presence with high contrast in polarizing microscopy. | Session 29: Liquid Crystals |
| 532 | The crucial role of a functional group position in the self-assembly of lyotropic chromonic liquid crystals | Eun, Jonghee; Cheon, Jiyong; Kim, Sung-Jo; Shin, Tae Joo; Jeong, Joonwoo | Here, utilizing the representative LCLC, Sunset Yellow FCF (SSY), we report the effects of intrinsic additives, i.e., byproducts of SSY synthesis. | Session 29: Liquid Crystals |
| 533 | Nanoscale crystalline order in lyotropic solution of supramolecular hollow cylinders | Huang, Ningdong; Ungar, Goran | We observe the formation of tubular aggregates or columns with diameter about 15 nms of which the morphology remains almost unchanged with concentration. | Session 29: Liquid Crystals |
| 534 | Stability of binary colloidal crystals immersed in a cholesteric liquid crystal | Changizrezaei, Setarehalsadat; Denniston, Colin | We model a number of both closed-packed and non-closed-packed crystals inside a cholesteric liquid crystal (LC) with different pitch values and nematic LC through the Landau–de Gennes free-energy method. | Session 29: Liquid Crystals |
| 535 | Hydrodynamic theory of p-atic liquid crystals | Sarkar, Niladri; Toner, John; Giomi, Luca | We formulate a comprehensive hydrodynamic theory of two dimensional liquid crystals having p-fold rotational symmetry often referred to as p-atics. | Session 29: Liquid Crystals |
| 536 | Anisotropic disclination cores in nematic liquid crystals modelled by a computational Maier-Saupe field theory | Schimming, Cody; Vinals, Jorge | We develop a computational model based on a field theory extension of the Maier-Saupe molecular model of a uniaxial, nematic liquid crystal. | Session 29: Liquid Crystals |
| 537 | Weakly compressible smectic-isotropic model: coalescence, flows and focal conic defects | Vitral, Eduardo; Leo, Perry; Vinals, Jorge | We previously proposed a phase field model to study a smectic-isotropic interface, and our numerical results have shown morphological transitions from focal conics to conical pyramids, which are also observed in experiments on smectic films. | Session 29: Liquid Crystals |
| 538 | Difference in the interaction of nano-diameter rod and tubular particles with a disclination line in a nematic liquid crystal | Murali, Meenu; Agha, Hakam; Mrzel, Ales; Scalia, Giusy | Difference in the interaction of nano-diameter rod and tubular particles with a disclination line in a nematic liquid crystal | Session 29: Liquid Crystals |
| 539 | Molecular Packing in Double Gyroid Cubic Phases Revealed via Resonant Soft X-ray Scattering | Cao, Yu; Alaasar, Mohamed; Nallapaneni, Asritha; Salamonczyk, Miroslaw; Marinko, Peter; Gorecka, Ewa; Liu, Feng; Vaupotic, Natasa; Zhu, Chenhui | Molecular Packing in Double Gyroid Cubic Phases Revealed via Resonant Soft X-ray Scattering | Session 29: Liquid Crystals |
| 540 | Mechanogeometry of nanowrinkling in biological cholesteric liquid crystal surfaces | Wang, Ziheng; Servio, Phillip; Rey, Alejandro | We presented a theory to model the emergence of these surfaces and interfaces using liquid crystal-based shape equations that directly connect material properties with geometric wrinkling. | Session 29: Liquid Crystals |
| 541 | Interaction of tilted liquid crystal skyrmions | Duzgun, Ayhan; Saxena, Avadh | In this work we investigate this interaction in a variety of cases. | Session 29: Liquid Crystals |
| 542 | Switching and hopping of hopfions in chiral liquid crystals | Tai, Jung-Shen; Wu, Jin-Sheng; Smalyukh, Ivan | We demonstrate how hopfions and heliknotons inter-transform smoothly between one another when the background field of the host medium is switched by an electric field between uniform and helical states, with myriads of different energetically stable embodiments of Hopf-fibration-like topology with and without applied electric fields. | Session 29: Liquid Crystals |
| 543 | Calculating the entropy of physical systems with Machine Learning | Bar-Sinai, Yohai | We present a novel method, termed MICE (Machine-learning Iterative Calculation of Entropy) for calculating the entropy by iteratively dividing the system into smaller subsystems and estimating the mutual information between each pair of halves. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 544 | Predicting Erosion Channel First Passage with Machine Learning | Khor, Isaac; Han, Li; Kudrolli, Arshad | We investigate statistical and machine learning approaches to predicting erosive headward growth in rivers with bimodal source distributions. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 545 | Machine Learning Prediction of Avalanche-like Events in Knitted Fabric | Douin, Adèle; Lechenault, Frederic; Bruneton, Jean-Philippe | We study the feasibility of predicting quantities such as next event amplitude or fault failure times by training a Neural Network algorithm to infer information from a series of past force signal and deformation field. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 546 | What makes a clog: characterizing 2D granular hopper flows using machine learning methods | Hanlan, Jesse; Durian, Douglas | We use a vertical, 2D hopper to image and track individual states, a new protocol to isolate unique configurations, and a novel machine learning analysis to leverage all the data, whether it is flowing or clogging. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 547 | Predicting Plasticity in 3D Model Glasses Using the Local Yield Stress Method | Ruan, Dihui; Patinet, Sylvain; Falk, Michael | We apply the LYS method to 3D Kob-Anderson glasses each with one million atoms in a ~ simulation box. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 548 | Predicting nonlinear stochastic and quantum dynamics without PDEs | Hastewell, Alasdair; Dunkel, Jorn | Here, we introduce a method that skips the model formulation step of the traditional prediction pathway by directly discovering the fundamental bases from data through an interpretable matrix factorization. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 549 | Soft Matter Physics for Machine Learning: Dynamical loss functions | Ruiz Garcia, Miguel; Zhang, Ge; Schoenholz, Sam; Liu, Andrea | So far, most effort has focused on improving the algorithm (e.g. stochastic gradient descent). | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 550 | Large-scale visualization with machine learning of dislocation networks in colloidal single crystals | Svetlizky, Ilya; Kim, Seongsoo; Pahng, Seong Ho; Curatolo, Agnese; Brenner, Michael; Weitz, David; Spaepen, Frans | To visualize the large-scale collective dislocation dynamics in colloidal single crystals, we developed a laser diffraction imaging technique inspired by the classical TEM imaging methods in atomic systems. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 551 | Statistical properties of ridge networks in crumpled sheets | CVeghes@clarku.edu, Catalin; Han, Li; Kudrolli, Arshad | We study a folding model of crumpled paper using a flat folding and d-fold algorithm introduced by Hofmann, et al. (2019). | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 552 | Machine Learning of Mechanisms in Combinatorial Metamaterials | van Mastrigt, Ryan; Coulais, Corentin; Van Hecke, Martin; Dijkstra, Marjolein | Here we employ machine learning techniques to explore combinatorial metamaterial design. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 553 | Simplifying Physics Informed Neural Networks in case of periodicity to address low quality and sparse data while solving differential equations : an application in fluid dynamics. | Raynaud, Gaétan; Gosselin, Frederick; Houde, Sébastien | To tackle that issue in the presence of periodic dynamics, we introduce ModalPINN where a truncated Fourier decomposition is enforced directly into the neural network’s structure. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 554 | Neuromorphics for network inference: new techniques and validation in opto-electronic experiments | Banerjee, Amitava; Hart, Joseph; Roy, Rajarshi; Ott, Edward | We devise a machine learning technique to solve the general problem of inferring network links with time-delays purely from time-series data of the network nodal states. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 555 | Reconstruction of Protein Structures from Single-Molecule Time Series | Topel, Maximilian; Ferguson, Andrew | Applying Takens’ Theorem and tools from statistical mechanics, manifold learning, neural networks, and graph theory, we establish an approach Single-molecule TAkens Reconstruction (STAR) to learn this Jacobian and reconstruct all atom trajectories from experimentally-measurable scalar observables. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 556 | Deep learning enabled wavefront shaping in complex cavities with a binary tunable metasurface | Frazier, Benjamin; Antonsen, Thomas; Anlage, Steven | In this work, we show how deep learning can be leveraged to optimize the metasurface commands without relying on a blind iterative optimization approach. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 557 | Self-learning machines based on time reversal | Lopez Pastor, Victor; Marquardt, Florian | We introduce a general scheme to use any time-reversible Hamiltonian system as a self-learning machine. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 558 | Learning active hydrodynamics from particle simulations | Supekar, Rohit; Song, Boya; Hastewell, Alasdair; Mietke, Alexander; Dunkel, Jorn | Here, we present a framework that leverages sparse regression learning algorithms to discover PDE models from coarse-grained microscopic data, while incorporating the relevant physical symmetries. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 559 | Machine learning active-nematic hydrodynamics | Colen, Jonathan; Han, Ming; Zhang, Rui; Redford, Steven; Lemma, Linnea; Morgan, Link; Ruijgrok, Paul; Adkins, Raymond; Bryant, Zev; Dogic, Zvonimir; Gardel, Margaret; De Pablo, Juan; Vitelli, Vincenzo | Hydrodynamic theories effectively describe many-body systems out of equilibrium in terms of a few macroscopic parameters. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 560 | Tracking Islands on Smectic Bubbles using Machine Learning | Chowhury, Ravin; Hedlund, Eric; Green, Adam; Park, Cheol; MacLennan, Joseph; Clark, Noel | We apply modern advances in deep learning to identify and track these islands in a novel way. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 561 | Data-Driven Classical Density Functional Theory: A Case for Physics Informed Learning | Yatsyshin, Petr; Kalliadasis, Serafim; Duncan, Andrew | In the present talk we explore the synthesis of both these paradigms, applied to modelling classical many-body systems. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 562 | Extracting Dynamical laws in Dusty Plasmas using Machine Learning | Yu, Wentao; Gogia, Guram; Burton, Justin | Instead, simulated data with known underlying governing equations are used to train models. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 563 | Learning the Constitutive Relation of Polymeric Flows with Memory | Seryo, Naoki; Sato, Takeshi; Molina, John; Taniguchi, Takashi | We develop a learning strategy to infer the constitutive relation for the stress of polymeric flows with memory. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 564 | Defect Annihilation in Liquid Crystal Physics: Using Deep Learning to Probe the Dynamics of Defects | Green, Adam; Chowdhury, Ravin; Minor, Eric; Howard, Stian; Park, Cheol; Clark, Noel | In this work, we apply these machine learning methods to analyze high-speed microscopy images of defect annihilation in quenched films. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 565 | Machine Learning approach to the discrimination of phospholipid gel and fluid states in lipid bilayers. | Walter, Vivien; Ruscher, Céline; Marques, Carlos; Benzerara, Olivier; Thalmann, Fabrice | The two-states model of the phospholipid gel-fluid transition was introduced in the late seventies, and is still routinely used to interpret calorimetric data in the field of lipid membranes [1]. | Session 30: Machine Learning in Nonlinear Physics and Mechanics |
| 566 | Decoding the physical principles of biomolecular phase separation | Zhang, Yaojun; Xu, Bin; Weiner, Benjamin; Meir, Yigal; Wingreen, Ned | We combined coarse-grained molecular dynamics simulations and analytical theory to investigate how the macroscopic phase boundaries and physical properties of condensates depend on the microscopic properties of the polymers and the concentration ratio between polymer species. | Session 31: Macromolecular Phase Separation |
| 567 | Reentrant transitions in protein phase-separation: segregation vs. association | Deviri, Dan; Safran, Samuel | We use Flory Huggins theory to predict the phase diagrams of scaffold-client-solvent ternary solutions. | Session 31: Macromolecular Phase Separation |
| 568 | Fusion of Biomolecular Condensates | Ijavi, Mahdiye; Sturzenegger, Flurin; Schuler, Benjamin; Dufresne, Eric | To identify the limitations of this technique, we compare the dynamics of fusion for droplets in contact with a surface to droplets in the bulk of a solution. | Session 31: Macromolecular Phase Separation |
| 569 | Novel “dark state” phosphate cluster formation in aqueous solution | Straub, Joshua; Nowotarski, Mesopotamia; Lu, Jiaqi; Helgeson, Matthew; Jerschow, Alexej; Han, Songi | We present novel studies in which the behavior of phosphates with increasing temperature via 31P NMR exhibit anomalous relaxation, indicating the presence of a novel phosphate state. | Session 31: Macromolecular Phase Separation |
| 570 | Non-equilibrium regulation and organization of transcriptional condensates by RNA synthesis | Shrinivas, Krishna; Henninger, Jonathan; Oksuz, Ozgur; Schede, Halima; Sharp, Phillip; Young, Richard; Chakraborty, Arup | We leverage approaches from non-equilibrium statistical physics and complex coacervates to propose a model by which RNA, the product of gene expression, regulates transcriptional condensate dynamics. | Session 31: Macromolecular Phase Separation |
| 571 | Quantitative Theory for the Diffusive Exchange Dynamics of Liquid Condensates | Hubatsch, Lars; Jawerth, Louise; Love, Celina; Bauermann, Jonathan; Tang, TY; Bo, Stefano; Hyman, Anthony; Weber, Christoph | Using the theory of phase separation we derive a framework that quantitatively captures the diffusive transport of labeled droplet components. | Session 31: Macromolecular Phase Separation |
| 572 | Surface condensation of a pioneer transcription factor on DNA | Morin, Jose; Wittmann, Sina; Choubey, Sandeep; Klosin, Adam; Golfier, Stefan; Hyman, Anthony; Julicher, Frank; Grill, Stephan | Here we investigate the role of DNA in nucleation of condensates, using the pioneer transcription factor KLF-4. | Session 31: Macromolecular Phase Separation |
| 573 | Quantitative phase microscopy enables precise and efficient determination of biomolecular condensate composition | McCall, Patrick; Kim, Kyoohyun; Fritsch, Anatol; Iglesias-Artola, Juan; Jawerth, Louise; Wang, Jie; Ruer, Martine; Poznyakovskiy, Andrey; Peychl, Jan; Guck, Jochen; Alberti, Simon; Hyman, Anthony; Brugués, Jan | Here we combined quantitative phase microscopy and the physics of sessile droplets to measure the shape and composition of individual model condensates. | Session 31: Macromolecular Phase Separation |
| 574 | Elastically limited liquid-liquid phase separation | Ronceray, Pierre; Mao, Sheng; Kosmrlj, Andrej; Haataja, Mikko | We propose simple criteria for which scenario is preferred, introducing a phase diagram controlled by the trade-off between elastic modulus, liquid-liquid surface tension, and liquid-network wetting properties. | Session 31: Macromolecular Phase Separation |
| 575 | Phase separation controlled by molecular transitions | Bartolucci, Giacomo; Adame-Arana, Omar; Zhao, Xueping; Weber, Christoph | Here, we derive a minimal model of a phase-separating ternary mixture where two components can convert into each other. | Session 31: Macromolecular Phase Separation |
| 576 | Liquid condensates increase potency of amyloid fibril inhibitors | Michaels, Thomas; Mahadevan, Lakshminarayanan; Weber, Christoph | Here we study the interplay between protein aggregation, its inhibition and liquid-liquid phase separation. | Session 31: Macromolecular Phase Separation |
| 577 | Characterization of the functional relevance of intranuclear transcription factor aggregates in living fly embryos | Munshi, Rahul; Levo, Michal; Wieschaus, Eric; Gregor, Thomas | Here, we employ live imaging and quantitative analyses in early fly embryos to visualize and characterize such TF aggregates and simultaneously measure target gene activity. | Session 31: Macromolecular Phase Separation |
| 578 | Phase-separated compartments as biochemical reactors | Laha, Sudarshana; Michaels, Thomas; Weber, Christoph | Here, we derive a theoretical framework to study fuel driven chemical reactions in the presence of compartments. | Session 31: Macromolecular Phase Separation |
| 579 | Aging of Protein Condensates | Jawerth, Louise | Here, we present our efforts to quantify these new materials as they age in vitro. | Session 31: Macromolecular Phase Separation |
| 580 | Liquid network connectivity regulates the stability and composition of biomolecular condensates with many components | Espinosa, Jorge; Joseph, Jerelle; Sanchez-Burgos, Ignacio; Garaizar, Adiran; Frenkel, Daan; Collepardo-Guevara, Rosana | Using a minimal coarse-grained model that allows us to simulate thousands of interacting multivalent proteins, we provide predictive rules governing the stability and composition of multicomponent biomolecular condensates. | Session 31: Macromolecular Phase Separation |
| 581 | Sequence dependence of biomolecular condensates | Weiner, Benjamin; Meir, Yigal; Wingreen, Ned | Using lattice-polymer simulations and mean-field theory, we show that the sequence of binding motifs strongly affects a polymer’s ability to phase separate, influencing both phase boundaries and condensate properties (e.g. viscosity and polymer extension). | Session 31: Macromolecular Phase Separation |
| 582 | Guiding growing droplets through the cytoskeleton | Boeddeker, Thomas; Rosowski, Kathryn; Dufresne, Eric | Here, we study the interactions of stress granules, a phase-separated protein-RNA droplet in the cytosol, with the heterogeneous networks of actin and microtubules. | Session 31: Macromolecular Phase Separation |
| 583 | Round Tubulin Droplet Formation in Presence of Cross-linkers | Sahu, Sumon; Ross, Jennifer | Surprisingly, we have observed that tubulin, a well-characterized enzyme that polymerizes into microtubules, can display droplet-like phase separation in the presence of a small molecule crosslinker, Sulfo-SMCC, and a microtubule-associated protein, MAP65. | Session 31: Macromolecular Phase Separation |
| 584 | BIAPSS – comprehensive bioinformatic analysis of liquid-liquid phase separating sequences | Badaczewska-Dawid, Aleksandra Elzbieta; Potoyan, Davit | The bioinformatic analysis provides us with the knowledge about sequence conservation, secondary structure preferences, solvent accessibility, contacts, charge decoration, AA composition, and short linear motifs detection. | Session 31: Macromolecular Phase Separation |
| 585 | Cavitation controls droplet sizes in elastic media | Vidal, Estefania; Zwicker, David | We show that large droplets only form when they fracture the surrounding matrix in a cavitation event. | Session 31: Macromolecular Phase Separation |
| 586 | Hierarchical assembly encodes functional structure within liquid condensates | Bhandari, Kamal; Schmit, Jeremy | We propose a general model in which functional structure can be embedded with a liquid when the molecules assemble hierarchically via interactions that vary widely in affinity. | Session 31: Macromolecular Phase Separation |
| 587 | Systematic investigation of a two-fluid model describing ion-induced volume phase transition in polyelectrolyte gels | Mussel, Matan; Lewis, Owen; Basser, Peter; Horkay, Ferenc | Here we report a systematic investigation of a two-fluid model describing the dynamic response of the coupled components (polymer network, solvent, and charged ions). | Session 31: Macromolecular Phase Separation |
| 588 | Liquid-Liquid Phase Separation of Inorganic Polyphosphate; the Complexities of a Simple Model | Seppala, Hannah; Banerjee, Priya | Here, we will present data depicting the phase behavior of polyP, showing that it forms a wide variety of condensates through liquid-liquid phase separation with numerous cations, including divalent salts, polyamines, and proteins. | Session 31: Macromolecular Phase Separation |
| 589 | Specific recognition and recruitment of client molecules by a liquid phase | Bhandari, Kamal; Schmit, Jeremy | Based on theoretical modeling, we propose that molecules are highly aligned to form zipper structures and these zippers have defects in the bonding structure that allow for the subsequent formation of a network. | Session 31: Macromolecular Phase Separation |
| 590 | Computational modeling of liquid-liquid phase separation and cargo encapsulation in self-assembling microcompartments | Mohajerani, Farzaneh; Sayer, Evan; Neil, Christopher; Inlow, Koe; Hagan, Michael | We develop equilibrium theory and dynamical computational model to describe assembly of a protein shell around cargo and scaffold molecules, with cargo coalescence and encapsulation provided by scaffold-mediated interactions. | Session 31: Macromolecular Phase Separation |
| 591 | ATPase-Dependent Enzyme Activity Modulates the Dynamics of a Model Biological Condensate | Coupe, Sebastian; Fakhri, Nikta | Here, we use the model phase-separating DEAD-box helicase LAF-1. | Session 31: Macromolecular Phase Separation |
| 592 | Finite-size transitions in membranes | Girard, Martin; Bereau, Tristan | In this talk, I will show that by carefully extending the 2D Ising model to N states, finite-size effects drive the system to adopt a critical composition. | Session 31: Macromolecular Phase Separation |
| 593 | Signaling outcomes driven by critical fluctuations | Schaffner, Taylor; Machta, Benjamin | Here we present a model and Monte-Carlo simulation framework for proteins coupled to their surrounding lipid membrane using a modified 2D Ising model. | Session 31: Macromolecular Phase Separation |
| 594 | Gelation and phase separation in LAT membrane complexes | GrandPre, Trevor; Limmer, David | We have developed a particle based reaction diffusion model of LAT that incorporates multivalent bonding and diffusive dynamics to study the kinetics and thermodynamics of condensate formation. | Session 31: Macromolecular Phase Separation |
| 595 | Molecular Model of Multi-Phasic Biomolecular Condensates | Kaur, Taranpreet; Raju, Muralikrishna; Alshareedah, Ibraheem; Davis, Richoo; Potoyan, Davit; Banerjee, Priya | Using a minimalistic system, comprising of a Prion-like disordered polypeptide (PDP), an Arginine-rich disordered polypeptide (RDP), and RNA, we investigate the thermodynamics of multicomponent intracellular phase behavior. | Session 31: Macromolecular Phase Separation |
| 596 | Effects of Membrane-Curvature on Amyloid-Beta Aggregation | Sahoo, Abhilash | In this work, we have explored the effects of membrane curvature on Aβ 16–22 aggregation, using physics-based coarse-grained molecular simulations of model membranes composed of phosphatidylcholine lipids. | Session 31: Macromolecular Phase Separation |
| 597 | Diffusion in a membrane in the presence of immobile obstacles: the role of disorder | Ilow, Nicholas; Slater, Gary | We present a study of transient and steady-state molecular diffusion in two-dimensional ”Fuzzy” systems of immobile obstacles, i.e., systems which bridge the gap between the ideal periodic and random limits. | Session 31: Macromolecular Phase Separation |
| 598 | Towards Understanding Antibiotic Permeation Across The Gram-negative Bacteria Outer Membrane Using Molecular Dynamics Simulations | Deylami, Javad; Chng, Shu Sin; Yong, Ee Hou | To shed light on the energetics of antibiotic permeation across the outer membrane, we employed a molecular dynamics (MD) simulation approach to obtain the free energy profiles as various clinically important antibiotics were pulled across an Escherichia coli outer membrane model. | Session 31: Macromolecular Phase Separation |
| 599 | Miscibility tricritical points in asymmetric lipid bilayers | Wang, Anjiabei; Machta, Benjamin; Graf, Isabella | To investigate the conditions under which such a tricritical point occurs, we consider an Ising-type lattice model with two coupled layers representing the two leaflets of cell membranes. | Session 31: Macromolecular Phase Separation |
| 600 | Interaction and assembly of graphene oxide nano-flakes in lipid membranes | MANDAL, PRIYA; Giri, Rajendra; Bhattacharya, Gourav; Bhattacharyya, Arpan; Roy, Susanta; Murphy, Bridget; Ghosh, Sajal | Interaction and assembly of graphene oxide nano-flakes in lipid membranes | Session 31: Macromolecular Phase Separation |
| 601 | Constructing molecularly-informed field theories from bottom-up coarse-graining: Rethinking how we engineer soft matter formulations | Sherck, Nick; Shen, Kevin; Nguyen, My; Yoo, Brian; koehler, Stephan; Speros, Joshua; Delaney, Kris; Shell, M. Scott; Fredrickson, Glenn | To overcome the weaknesses of both, we use small-scale, atomistic simulations to parameterize the statistical field theory models. | Session 31: Macromolecular Phase Separation |
| 602 | Surface Phases in Polymer Mixtures and Critical Membranes | Rouches, Mason; Veatch, Sarah; Machta, Benjamin | Here we explore the physical underpinnings of these domains. | Session 31: Macromolecular Phase Separation |
| 603 | Chromatin Mechanics Dictates Subdiffusion and Coarsening Dynamics of Embedded Condensates | Lee, Daniel; Wingreen, Ned; Brangwynne, Cliff | Here, we utilize a powerful optogenetic strategy to examine the interplay of droplet coarsening with the surrounding chromatin network. | Session 31: Macromolecular Phase Separation |
| 604 | Quantifying Phase Behavior and Material Properties of Multicomponent Biomolecular Condensates | Pullara, Paul; Alshareedah, Ibraheem; Banerjee, Priya | Here we study how variations in RNA-to-protein stoichiometry modulate the phase behavior and condensed phase fluid dynamics. | Session 31: Macromolecular Phase Separation |
| 605 | Recent Progress on 3D Chiral Mechanical Metamaterials | Wegener, Martin | Concerning the static regime, we will present novel architectures that allow for bringing the push-to-twist conversion effects previously reported by us to much larger absolute values at larger numbers of unit cells. | Session 32: Mechanical Metamaterials I – Novel Mechanics and Shape Morphing |
| 606 | Chirality-induced Normal-Shear Coupling Effects of Auxetic Chiral Mechanical Metamaterial | Liu, Siyao; Li, Yaning | Chirality-induced Normal-Shear Coupling Effects of Auxetic Chiral Mechanical Metamaterial | Session 32: Mechanical Metamaterials I – Novel Mechanics and Shape Morphing |
| 607 | Reconfigurable Kirigami | Choi, Gary; Dudte, Levi; Mahadevan, L. | We depart from this simple paradigm by proposing a framework for the design of compact reconfigurable kirigami patterns, which can morph from a closed and compact configuration into a deployed state conforming to any prescribed target shape, and subsequently be contracted into a different closed and compact configuration. | Session 32: Mechanical Metamaterials I – Novel Mechanics and Shape Morphing |
| 608 | Topology Restricts Quasidegeneracy in Sheared Square Colloidal Ice | Oguz, Erdal; Ortiz ambriz, Antonio; Shem-Tov, Hadas; Babia-Soler, Eric; Tierno, Pietro; Shokef, Yair | We combine experiments, theory, and numerical simulations to demonstrate that sheared square colloidal ice partially recovers the ground-state degeneracy for a wide range of field strengths and lattice shear angles. | Session 32: Mechanical Metamaterials I – Novel Mechanics and Shape Morphing |
| 609 | Liquid-induced topological transformations of cellular microstructures | Deng, Bolei; Li, Shucong; Bertoldi, Katia; Aizenberg, Joanna | Here we introduce a two-tiered dynamic strategy to achieve systematic reversible transformations of the fundamental topology of cellular microstructures that can be applied to a wide range of material compositions and geometries. | Session 32: Mechanical Metamaterials I – Novel Mechanics and Shape Morphing |
| 610 | Screening of topological defects in elastic metamaterials | Sokolov, Tal; Shapira, Bar; Bar-Sinai, Yohai; Moshe, Michael; Lahini, Yoav | Here we demonstrate experimentally, and describe analytically, an exotic mechanical response of two dimensional elastic metamaterials – screening of the long-range elastic fields induced by topological defects (disclinations). | Session 32: Mechanical Metamaterials I – Novel Mechanics and Shape Morphing |
| 611 | Systematic Exploration on the Effective Mechanical Properties of Three-Dimensional Chiral Auxetic Mechanical Metamaterials | Li, Tiantian; Li, Yaning | Based on a monoclinic anisotropic model, an integrated numerical-analytical method is developed to model the constitutive behavior of chiral mechanical metamaterials. | Session 32: Mechanical Metamaterials I – Novel Mechanics and Shape Morphing |
| 612 | Oligomodal Mechanical Metamaterials | Dykstra, David; Bossart, Aleksi; van der Laan, Jop; Coulais, Corentin | Here, we introduce a novel class of oligomodal metamaterials that encode a few but fixed number of distinct properties that can be selectively controlled under uniaxial compression. | Session 32: Mechanical Metamaterials I – Novel Mechanics and Shape Morphing |
| 613 | Totimorphs | Chaudhary, Gaurav; Prasath, S Ganga; Soucy, Edward; Mahadevan, L. | We describe a mechanism by which a unit of zero stiffness structure can be assembled to create objects that can morph into multiple arbitrarily complex target shapes. | Session 32: Mechanical Metamaterials I – Novel Mechanics and Shape Morphing |
| 614 | Topological, reconfigurable load-bearing cellular origami | Pasini, Damiano; Jamalimehr, Amin; Mirzajanzadeh, Morad | Inspired by notions of origami and kirigami, we introduce here a class of reconfigurable load-bearing cellular materials that can be easily realized to reversibly fold into multiple states, lock sturdily to bear the applied loads, as well as display omnidirectional compressive stiffness. | Session 32: Mechanical Metamaterials I – Novel Mechanics and Shape Morphing |
| 615 | A reprogrammable mechanical metamaterial with stable memory | Chen, Tian; Pauly, Mark; Reis, Pedro | Here, to overcome this challenge, we demonstrate a design framework for a tileable mechanical metamaterial with stable memory at the unit cell level. | Session 32: Mechanical Metamaterials I – Novel Mechanics and Shape Morphing |
| 616 | Multifunctional disordered elastic networks: Designed response of mechanical metamaterials | Liarte, Danilo; Stenull, Olaf; Thornton, Stephen; Sethna, James; Lubensky, Tom | We introduce two periodic lattice models that access negative values of the Poisson ratio, one of which accesses the full range from -1 to +1. | Session 33: Mechanical Metamaterials III – Vibrations and Nonlinearity |
| 617 | Programming impulsive deformation with mechanical metamaterials | Liang, Xudong; Crosby, Alfred | Here, we demonstrate that specific internal structural designs can offer the ability to tune quasi-static and high-speed recoil independently to control energy storage and conversion processes. | Session 33: Mechanical Metamaterials III – Vibrations and Nonlinearity |
| 618 | Non-Hermitian topological metamaterials with odd elasticity | Zhang, Junyi; Zhou, Di | We establish non-Hermitian topological mechanics in one-dimensional (1D) and 2D lattices consisting of mass points connected by metabeams that lead to odd elasticity. | Session 33: Mechanical Metamaterials III – Vibrations and Nonlinearity |
| 619 | Input-independent frequency conversion through transition waves in bistable metabeams | Hwang, Myungwon; Arrieta, Andres | In this study, the input-independence characteristics of bistable lattices are extended to architectures exhibiting dynamics in two different size scales: the microscale excitation in the unit cell level and the macroscale response in the structural level. | Session 33: Mechanical Metamaterials III – Vibrations and Nonlinearity |
| 620 | Deformation controlled negative group velocity state in soft composites | Arora, Nitesh; Qi, Yao; Slesarenko, Viacheslav; Li, Jian; Galich, Pavel; Rudykh, Stephan | Here, we reveal the existence of a state in soft composites – layered and 3D fiber composites, characterized by negative group velocity. | Session 33: Mechanical Metamaterials III – Vibrations and Nonlinearity |
| 621 | Dynamics of rotationally symmetric elastic quasicrystals: numerical and experimental investigations | Nora Rosa, Matheus; Beli, Danilo; De Marqui, Carlos; Ruzzene, Massimo | In this talk, we investigate a family of continuous elastic quasicrystals with different rotational symmetry orders that are directly enforced through a design procedure in reciprocal space. | Session 33: Mechanical Metamaterials III – Vibrations and Nonlinearity |
| 622 | Closed-form existence conditions for band-gap resonances in a 1D linear elastic diatomic lattice with general boundary conditions | Bastawrous, Mary V.; Hussein, Mahmoud I. | In this work, closed-form existence conditions are derived for band-gap resonances in discrete diatomic chains with general boundary conditions and arbitrary chain parity. | Session 33: Mechanical Metamaterials III – Vibrations and Nonlinearity |
| 623 | Topological gaps in 2D locally resonant meta-structures via twisting | Guo, Yuning; Rosa, Matheus; Ruzzene, Massimo; Prodan, Emil | Herein, we present a reconfigurable 2D elastic plate featuring arrays of resonators with tunable on-site frequency. | Session 33: Mechanical Metamaterials III – Vibrations and Nonlinearity |
| 624 | Mechanical vibration and acoustic bandgaps in lattices and triply periodic bi-continuous composites | Lee, Dong-Wook; Alhammadi, Alya; Almheiri, Mahra; Alzaabi, Fatima; Al Teneiji, Mohammed | In this work, phononic and acoustic bandgaps and phonon dispersion and sound attenuation curves in lattices and triply periodic bi-continuous composites, which are based on the Schwarz’ Primitive and Diamond and Schoen’s I-WP and Gyroid, are found and the widths of these bandgaps are depending on volume fraction and these bandgaps can be controlled by the choice of cell type, size and volume fraction and utilized to control vibration and noise. | Session 33: Mechanical Metamaterials III – Vibrations and Nonlinearity |
| 625 | Klein-like tunneling in acoustic metamaterials | Sirota, Lea | Here I present a realization of a completely analogous tunneling effect in a classical, effectively continuous acoustic metamaterial. | Session 33: Mechanical Metamaterials III – Vibrations and Nonlinearity |
| 626 | Topological Mechanics and Nonlinearity | Chaunsali, Rajesh; Theocharis, Georgios | In this presentation, we will talk about our recent efforts to understand the interplay of nonlinearity and topology in mechanical systems. | Session 33: Mechanical Metamaterials III – Vibrations and Nonlinearity |
| 627 | Mechanical Metamaterials with Strain-Rate Adaptive Energy Absorption | Kang, Sung | We envision our study can contribute to lightweight extreme energy-dissipating materials with applications including personnel protection and automotive and aerospace parts. | Session 33: Mechanical Metamaterials III – Vibrations and Nonlinearity |
| 628 | Effective wave transmission at interfaces between metamaterials. | Deshmukh, Kshiteej; Dayal, Kaushik | Our aim is to determine the scattering coefficients that satisfy the conservation of energy flux and find the appropriate jump conditions to be satisfied at the interface. | Session 33: Mechanical Metamaterials III – Vibrations and Nonlinearity |
| 629 | What controls failure in ultrathin glassy polymer films? | Bay, R. Konane; Crosby, Alfred | We have developed a method to directly measure the uniaxial stress-strain response of ultrathin glassy polymer films. | Session 34: Mechanics and Dynamics of Polymers Under Confinement |
| 630 | Strain Rate and Thickness Dependences of Elastic Modulus of Free-standing Polymer Nanometer Films | YUAN, Hailin; Yiu, Pak Man; Gu, Qiao; Gao, Ping; Tsui, Ophelia | Strain Rate and Thickness Dependences of Elastic Modulus of Free-standing Polymer Nanometer Films | Session 34: Mechanics and Dynamics of Polymers Under Confinement |
| 631 | Alteration of mechanical properties in polymer films under nanoconfinement | Guo, Yunlong; Bai, Pei; Ma, Mingchao | In this talk, we show that nanoconfinement-induced chain conformations, and entropy-driven (above T g) or energetic-driven deformations (below T g) may account for the controversial results. | Session 34: Mechanics and Dynamics of Polymers Under Confinement |
| 632 | Direct measurement of stress relaxation in polymeric thin films | Ma, Guorong; Galuska, Luke; Zhang, Song; Gu, Xiaodan | In this work, we report the direct measurement of stress relaxation in polymer thin films through both film-on-water and free-standing tensile tests. | Session 34: Mechanics and Dynamics of Polymers Under Confinement |
| 633 | Connecting Morphology to Mechanical Response in Thin Block Copolymer Films | Bukowski, Cynthia; Zhang, Tianren; Riggleman, Robert; Crosby, Alfred | With this chosen system, we can offer direct insight into the structure-property relationships. | Session 34: Mechanics and Dynamics of Polymers Under Confinement |
| 634 | Role of Water on Correlated Structural and Mechanical Response of Water-Supported and Free-Standing Ultrathin Films | Galuska, Luke; Muckley, Eric; Cao, Zhiqiang; Ehlenberg, Dakota; Qian, Zhiyuan; Zhang, Song; Rondeau-Gagne, simon; Phan, Minh; Ankner, John; Ivanov, Ilia; Gu, Xiaodan | Overall, this work establishes a novel technique for measuring the mechanical properties of free-standing thin films and provides an in-depth analysis of the role of the polymer-water interface. | Session 34: Mechanics and Dynamics of Polymers Under Confinement |
| 635 | Chain Entropy and Polymerization Thermodynamics: Quantifying Nanoconfinement Effects | Tian, Qian; Zhai, Chunhao; Simon, Sindee | Here, we exploit the changes in the limiting conversion for nanoconfined free radical polymerization compared to the bulk case in order to determine the chain confinement entropy. | Session 34: Mechanics and Dynamics of Polymers Under Confinement |
| 636 | Examining Correlations Between Density and Dynamics in Thin Polymer Films: Modeling Refractive Index Gradients with Ellipsometry | Han, Yixuan; Roth, Connie | A long standing issue with glassy dynamics in thin polymer films has been the question of whether density and dynamics may be correlated near interfaces. | Session 34: Mechanics and Dynamics of Polymers Under Confinement |
| 637 | Understanding the Failure and Mechanical Properties of Glassy Polymer Thin Films | Zhang, Tianren; Bukowski, Cynthia; Crosby, Alfred; Riggleman, Robert | In this study, we investigate the role of both segmental dynamics and changes in entanglement density on the mechanical response of glassy polymer films under uniaxial tension using molecular dynamics (MD) simulations. | Session 34: Mechanics and Dynamics of Polymers Under Confinement |
| 638 | Interfacial Dynamics Governs the Mechanical Properties of Nanoconfined Glassy Polymers | Xia, Wenjie | Here, we investigate the mechanical properties of free-standing polymer thin films by employing an atomistically informed coarse-grained (CG) modeling approach. | Session 34: Mechanics and Dynamics of Polymers Under Confinement |
| 639 | Probing ‘nanoconfinement’ effects on Tg of high-molecular-weight chains via molecular simulation | van Staden, Marcelle; Ghanekarade, Asieh; Simmons, David | In an effort to provide insight into this question, here we report on of simulations of glass formation in bead-spring polymer films comprised of high-molecular-weight entangled chains. | Session 34: Mechanics and Dynamics of Polymers Under Confinement |
| 640 | Growth of Irreversibly Adsorbed Layers and Corresponding Local Tg Perturbances in Polymer Nanocomposites | Randazzo, Katelyn; Zuo, Biao; Priestley, Rodney | Herein, we describe the local effects of irreversible adsorption in polystyrene-silica nanocomposites. | Session 34: Mechanics and Dynamics of Polymers Under Confinement |
| 641 | The role of the Nonlinear plastic response of fibrous networks for organoid growth | Bausch, Andreas | We conducted long-term live-cell imaging over several days to reveal the dynamics of organoid formation. | Session 35: Mechanics and Structure of Filament Networks: Tissues and Cytoskeleton |
| 642 | Finite-element Brownian dynamics simulations of biopolymer filament bundles and networks | Grill, Maximilian; Slepukhin, Valentin; Levine, Alex; Wall, Wolfgang | We perform large-scale numerical simulations of such complex, three-dimensional fibrous systems in order to explore their fundamental mechanical properties. | Session 35: Mechanics and Structure of Filament Networks: Tissues and Cytoskeleton |
| 643 | Quenched and topological disorder in filament networks and kinked bundles | Slepukhin, Valentin | In this talk, I explore the structure and mechanics of cross-linked filament bundles focusing on the role of quenched defects in bundles. | Session 35: Mechanics and Structure of Filament Networks: Tissues and Cytoskeleton |
| 644 | Mechanical criticality, nonlinearity, fracturing, and topological edge modes in fiber networks | Mao, Xiaoming | In this talk, we will discuss a number of remarkable mechanical properties of fiber networks, starting from Maxwell’s counting of numbers of degrees of freedom and constraints, which places these fiber networks close to a special mechanical critical point, the so called "isostatic point", leading to highly sensitive changes of elastic properties [1]. | Session 35: Mechanics and Structure of Filament Networks: Tissues and Cytoskeleton |
| 645 | Cells utilize strain hardening and crosslinking to establish their extracellular niche in fibrous tissue | Botvinick, Elliot; Jagiello, Alicja; Lim, Micah | Here, we use optical tweezers active microrheology (AMR) to quantify how two different cell lines embedded in 1.0 and 1.5 mg/ml type 1 collagen (T1C) establish dissimilar patterns of peri-cellular stiffness. | Session 35: Mechanics and Structure of Filament Networks: Tissues and Cytoskeleton |
| 646 | Correlated Dilution of Filamentous Networks Leads to Reentrant Rigidity Percolation | Michel, Jonathan; Wyse Jackson, Thomas; von Kessel, Gabriel; Bonassar, Lawrence; Cohen, Itai; Das, Moumita | We again find a peak in the measure of non-affinity of network displacement to coincide with rigidity percolation, but observe that this peak becomes higher and broader with increasing correlation. | Session 36: Mechanics of Cells and Tissues |
| 647 | Detecting force transmission pathways in 3D fibrin networks | Hu, Qingda; Botvinick, Elliot | Here we detect which fibers respond to an applied force using fluorescence confocal microscopy and optical tweezers in a 3D fibrin hydrogel. | Session 36: Mechanics of Cells and Tissues |
| 648 | Rigidity and fracture of biopolymer double networks | Lwin, Pancy; Sindermann, Andrew; Sutter, Leo; Wyse Jackson, Thomas; Cohen, Itai; Bonassar, Lawrence; Das, Moumita | We study a model that combines two structure-function frameworks – a double network (DN) made of a stiff network and a flexible network, and rigidity percolation theory. | Session 36: Mechanics of Cells and Tissues |
| 649 | Optimal elasticity of biological networks | Ronellenfitsch, Henrik | Inspired by the hierarchically organized scaffolding networks found in plant leaves, here we model networks of bending beams that capture the discrete and non-uniform nature of natural materials. | Session 36: Mechanics of Cells and Tissues |
| 650 | Mechanobiology of hyaluronan-rich glycocalyx: How do giant polymers modulate cell adhesion. | Jing, Yu; Cohen, Shlomi; Faubel, Jessica; Wei, Wenbin; Curtis, Jennifer | To examine the physical role of HA glycocalyx, we developed a biomimetic glycocalyx consisting of a microns-thick hyaluronan polymer brush. | Session 36: Mechanics of Cells and Tissues |
| 651 | Role of cellular rearrangement time delays on the rheology of vertex models for confluent tissues | Erdemci-Tandogan, Gonca; Manning, M. Lisa | In this work, we incorporate this idea by augmenting vertex models to require a fixed, finite time for T1 transitions, which we call the “T1 delay time”. | Session 36: Mechanics of Cells and Tissues |
| 652 | A Rigidity Percolation Framework to Understand How Biologically Induced Changes in Constituent Composition Alter Cartilage Shear Mechanics | Wyse Jackson, Thomas; Michel, Jonathan; Lwin, Pancy; Bartell, Lena; Fortier, Lisa; Das, Moumita; Bonassar, Lawrence; Cohen, Itai | We present experiments and theory in support of a rigidity percolation framework that explains how the shear properties of cartilage depend on the concentrations of both constituents. | Session 36: Mechanics of Cells and Tissues |
| 653 | Variations in the extensibility of fibrin fibers | Helms, Christine | We found that conditions during fiber formation play a significant role in fibrin extensibility. | Session 36: Mechanics of Cells and Tissues |
| 654 | Membrane deflection due to ultrasound results in cellular depolarization | Vasan, Aditya; Orosco, Jeremy; Magaram, Uri; Ramirez, Mark; Chalasani, Sreekanth; Friend, James | We have developed a model that predicts membrane deflection due to an ultrasound stimulus, and verified the results of this model with novel measurements of the membrane’s motion using high-speed digital holographic microscopy. | Session 36: Mechanics of Cells and Tissues |
| 655 | Real-time imaging of fibrin-bead networks under compression | Carroll, Bobby; Patteson, Alison | Here, we develop a custom compression device that allows for real-time imaging of the local micro-structure in the fibrin-bead network. | Session 36: Mechanics of Cells and Tissues |
| 656 | Viscoelastic properties of tissues in the vertex model | Tong, Sijie; Singh, Navreeta; Sknepnek, Rastko; Kosmrlj, Andrej | It was previously demonstrated that the vertex model can describe both the solid- and fluid-like behavior by tuning the target cell-shape parameter p 0=P 0/sqrt[A 0], where P 0 and A 0 are the preferred perimeter and area of cells, respectively. | Session 36: Mechanics of Cells and Tissues |
| 657 | Frustration and compromise in collectively moving cell clusters | Gopinathan, Ajay | In this talk, I shall describe a few examples of our work on modeling such clusters, highlighting how frustration can arise at the group level because of heterogeneity in behavior among members of the cluster. | Session 36: Mechanics of Cells and Tissues |
| 658 | Learning the dynamics of cell-cell interactions in confined cell migration | Brückner, David; Arlt, Nicolas; Fink, Alexandra; Ronceray, Pierre; Rädler, Joachim; Broedersz, Chase | Our approach reveals that interacting non-cancerous MCF10A cells can be described by repulsion and friction interactions. | Session 36: Mechanics of Cells and Tissues |
| 659 | Modeling cell motility at mechanical interfaces | Bose, Subhaya; Noerr, Patrick; Gopinath, Arvind; Dasbiswas, Kinjal | We use agent-based Brownian dynamics simulations to study the mechanical interactions between motile cells. | Session 36: Mechanics of Cells and Tissues |
| 660 | Recursive Feedback Between Matrix Dissipation and Chemo-mechanical Signaling Drives Oscillatory Growth of Cancer Cell Invadopodia | Gong, Ze; Wisdom, Katrina; McEvoy, Eoin; Chang, Julie; Adebowale, Kolade; Chaudhuri, Ovijit; Shenoy, Vivek | Here, we develop a chemo-mechanical model to predict the impact of matrix plasticity on the dynamics of invadopodia, the protrusive structures that cancer cells use to facilitate invasion. | Session 36: Mechanics of Cells and Tissues |
| 661 | Not only proteins: The role of compressed sugars in cell migration | Cohen, Shlomi; Kotowska, Patrycja; Chang, Patrick; Jing, Yu; Keate, Rebecca; Zhou, Dennis; Garcia, Andres; Nie, Shuyi; Curtis, Jennifer | In this work, we study three cell types to address the mechanics of cell adhesion in the presence of hyaluronan-rich glycocalyx, with a focus on its implications for cell migration. | Session 36: Mechanics of Cells and Tissues |
| 662 | VELOMIR: Fast microrheology sensor with high temporal and spatial resolution reveals onset of drug effects on single cell level | Pfeil, Jonas; Geiger, Daniel; Neckernuss, Tobias; Marti, Othmar | We present VELOMIR, VEry LOngtime MIcroRheology, a compact tool that tracks multiple particles in real time with up to 10 kHz sampling rate for almost infinite long tracking times. | Session 36: Mechanics of Cells and Tissues |
| 663 | Myosin motors regulate Drosophila stretch receptors | Guan, Chonglin; Nishi, Kengo; Kreis, Christian; Baeumchen, Oliver; Goepfert, Martin; Schmidt, Christoph | We found that the extracellular matrix surrounding the cap cells maintains the basic resting tension. | Session 36: Mechanics of Cells and Tissues |
| 664 | Correlation Studies of Cells’ Velocimetry on Micropatterned Substrates | Hughes, Keontré; Hallfors, Nicholas; Teo, Jeremy; Isakovic, Abdel F. | We analyzed the cells kinematics on micropatterned substrates using cells velocimetry and fluorescence microscopy for human foreskin fibroblast (HFF) cells. | Session 36: Mechanics of Cells and Tissues |
| 665 | Dynamic Mechanotransductive Self-Reinforcement of Transcription Factors Induces Memory of Gene Expression | Price, Chris; Mathur, Jairaj; Pathak, Amit; Shenoy, Vivek | We develop a dynamic self-reinforcement model, posed as a series of Waddington landscapes, to explain mechanical memory during cooling which depends on the priming time and the priming stiffness. | Session 36: Mechanics of Cells and Tissues |
| 666 | WKB solutions to the wave equation for the cochlea and for acoustic rainbow sensors | Marrocchio, Riccardo; Karlos, Angelis; Elliott, Stephen | The WKB method is used to derive an approximate solution to the cochlear wave equation, which results from the interaction between the passive dynamics of the basilar membrane and the 1D fluid coupling in the scalae, including both fluid viscosity and compressibility. | Session 36: Mechanics of Cells and Tissues |
| 667 | DNA Supercoiling Drives the Switch between Long-range Cooperative and Antagonistic RNAP Dynamics | Chatterjee, Purba; Goldenfeld, Nigel; Kim, Sangjin | Here we introduce a continuum deterministic model for RNAP translocation where the elongation velocity of an RNAP is coupled to the local supercoiling and RNAP density. | Session 36: Mechanics of Cells and Tissues |
| 668 | Biophysical modeling of membrane-actin interactions governing the morphology of dendritic spines | Alimohamadi, Haleh; Bell, Miriam; Halpain, Shelley; Rangamani, Padmini | In this study, we developed a minimal biophysical model to investigate the role of membrane-actin interactions in governing dendritic spine geometries. | Session 36: Mechanics of Cells and Tissues |
| 669 | Investigating Bacterial Deformation Upon Surface Attachment Using Finite Element Modeling | Wong, Yu-Chern; Gordon, Vernita | Hence, we develop finite element modeling to estimate the bacterial deformations due to adhesion. | Session 36: Mechanics of Cells and Tissues |
| 670 | Dynamics of spontaneous wrapping of microparticles by floppy lipid membranes | Spanke, Hendrik; Style, Robert; Dufresne, Eric | The polystyrene microparticles we use experience depletion interactions introducing an adhesion energy. | Session 37: Membranes, Micelles and Vesicles |
| 671 | Solvent diffusivity and viscosity in graphene oxide membrane for water-ethanol separation. | Acharya, Gobin; Hoffmann, Peter; Mamontov, Eugene; Tyagi, Madhusudan | Graphene oxide (GO) membranes were recently suggested for applications in separation of ethanol from water using a vapor permeation method. | Session 37: Membranes, Micelles and Vesicles |
| 672 | Monte Carlo simulation of fluid membranes with orientational order and free edges | Ding, Lijie; Pelcovits, Robert; Powers, Thomas | Motivated by experiments on membranes composed of chiral rod-like viruses, we consider a triangular mesh of hard beads possessing directors joined by tethers. | Session 37: Membranes, Micelles and Vesicles |
| 673 | Comparing microrheological methods for measuring lipid membrane viscosity | Jahl, Philip; Parthasarathy, Raghuveer | To resolve this discrepancy, we applied both methods simultaneously to the same lipid vesicles, featuring both phase separated domains and bound elliptical beads. | Session 37: Membranes, Micelles and Vesicles |
| 674 | Absolute/convective instabilities and front propagation in lipid membrane tubes | Sahu, Amaresh; Tchoufag, Joel; Mandadapu, Kranthi | We investigate the stability of membrane tubes with and without a base flow of lipids. | Session 37: Membranes, Micelles and Vesicles |
| 675 | Assessing Shear-induced Scission of Wormlike Micelles Using Flow-Small Angle Neutron Scattering | Zhang, Jiamin; Corona, Patrick; Leal, L. Gary; Helgeson, Matthew | We use model calculations of scattering from deformable objects in flow to deconvolute the contributions to the scattering from changes in micelle orientation, stretching, and interactions from effects due to changes in micelle length in flow. | Session 37: Membranes, Micelles and Vesicles |
| 676 | Non-pulsatile lipid vesicles under osmotic stress | Kumar, Vinit; Feng, Jie | In this talk, we present a comprehensive theoretical model that unifies these behavioral outcomes based on fundamental properties of the lipid membrane. | Session 37: Membranes, Micelles and Vesicles |
| 677 | Membrane remodeling in life processes: Unravelling membrane interactions, one vesicle at a time. | Sorkin, Raya; Dharan, Raviv; Shir-Shapira, Hila; Marchetti, Margherita; roos, wouter; Rizo, Josep; Groffen, Sander; Wuite, Gijs | In this talk, I will show how we combine a system of optical tweezers dedicated to accurate force measurements with confocal fluorescence microscopy to study membrane remodelling by calcium sensor proteins, which are crucial in neuronal communication. | Session 37: Membranes, Micelles and Vesicles |
| 678 | Structural Modifications Induced by Violacein in Lipid Membranes | Gupta, Ritika; Mitra, Saheli; Chowdhury, Subhadip; Das, Gangadhar; Priyadarshini, Richa; Mukhopadhyay, Mrinmay; Ghosh, Sajal | The present study sheds light on the surface and structural modifications induced by violacein in zwitterionic, cationic, and anionic lipid membranes. | Session 37: Membranes, Micelles and Vesicles |
| 679 | Multiscale simulation of surfactant self assembly: An Integrated Particle And Field-Theoretic Simulation Approach | Shen, Kevin; Nguyen, My; Sherck, Nick; Yoo, Brian; Kohler, Stephan; Speros, Joshua; Delaney, Kris; Shell, M. Scott; Fredrickson, Glenn | Here, we present a new strategy to tackle this multiscale modeling challenge by combining the strengths of both particle and field-theoretic simulations. | Session 37: Membranes, Micelles and Vesicles |
| 680 | Mechanically mediated attractions and repulsions between solid domains in composite vesicles | Wu, Hao; Santore, Maria; Grason, Gregory | We explore the structure and interactions of solid/fluid composite vesicles using 2D and 3D continuum models compared with experimental studies of phase-separated vesicles. | Session 37: Membranes, Micelles and Vesicles |
| 681 | Attractive and Repulsive Interactions between Plate-like Solid Membrane Domains in Phospholipid Membranes. | Xin, Weiyue; Wu, Hao; Grason, Gregory; Santore, Maria | This project employed giant unilamellar phospholipid vesicles to study the interactions between solid membrane domains which act more generally as plate-like inclusions, and it made a comparison to a continuum model. | Session 37: Membranes, Micelles and Vesicles |
| 682 | Design of self-organizing peptide chassis materials for synthetic cells by machine learning, molecular modeling, and cell-free protein synthesis. | Ma, Yutao; Ferguson, Andrew | In this study, we combine molecular simulation, machine learning, and cell-free protein synthesis to build predictive models for the discovery and design of ELP sequences and identify a small number of promising candidates for experimental testing. | Session 37: Membranes, Micelles and Vesicles |
| 683 | Pore Formation: How Cubic Lipid-siRNA Constructs Escape the Endosome | Zheng, Lining; Leal, Cecilia | In this work, we aim to elucidate the reason behind this difference in delivery efficiency. | Session 37: Membranes, Micelles and Vesicles |
| 684 | Programming Sequences in Multistable Mechanical Metamaterials | Bertoldi, Katia; Zanaty, Mohamed; Van Hecke, Martin | Here, we focus on a model system comprising a 1D array of rigid blocks connected by rigid levers and a linear spring and use a combination of experiments and analyses to study the effect of geometric parameters on the deformation sequences that emerge when the displacement of the top unit is controlled. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 685 | Sequential snapping of hysterons in a biholey metamaterial | Ding, Jiangnan; Van Hecke, Martin | We show how to construct metamaterials that exhibit a sequence of actions under monotonic input. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 686 | Controlled pathways in corrugated sheets | bense, hadrien; Van Hecke, Martin | Here we introduce mechanical driving of corrugated elastic sheets to precisely observe and manipulate complex, multi-step pathways. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 687 | Memory and aging in the cyclic crumpling of a film | Dong, Pan; He, Mengfei; Keim, Nathan; Paulsen, Joseph | Here we study a thin cylindrical shell under cyclic loading. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 688 | Encoding, retrieving and erasing mechanical memories in a crumpled sheet | Shohat, Dor; Hexner, Daniel; Lahini, Yoav | We study the behavior of crumpled sheets under cyclic strain. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 689 | Non-commuting Mechanical Metamaterials | Singh, Amitesh; Labousse, Matthieu; Van Hecke, Martin | Here, we introduce an elegant solution in the form of non-commuting mechanical metamaterials, which are sensitive to the magnitude as well as the order of inputs. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 690 | Topological Memory and Hysteresis in Ice-like Mechanical Metamaterials | Merrigan, Carl; Shokef, Yair; Nisoli, Cristiano | We present a mechanical analogue of artificial spin ice built up from bistable square cells that act as simple mechanical hysterons. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 691 | Novel memory formation in interacting hysterons | Lindeman, Chloe; Nagel, Sidney | Novel memory formation in interacting hysterons | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 692 | Multiperiodic orbits in a model of interacting soft spots in cyclically-sheared amorphous solids | Keim, Nathan; Paulsen, Joseph | We investigate multiperiodicity in a simplified coarse-grained model of soft spots—locations where particles rearrange under stress—and we identify simple routes to multiperiodic behavior. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 693 | Cyclic memory in random energy landscapes | Szulc, Asaf; Gat, Omri; Regev, Ido | Here we use a novel simulation algorithm, that uses a sampling technique to simulate deterministic forced dynamics on a Gaussian landscape. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 694 | Limits on memory storage in amorphous solids from analysis of transition networks | Regev, Ido; Attia, Ido; Dahmen, Karin; Sastry, Srikanth; Mungan, Muhittin | We analyze the directed graph of plastic transitions obtained by shearing an initial quenched configuration. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 695 | Memory in non-orientable mechanics | Guo, Xiaofei; Guzmán, Marcelo; Bartolo, Denis; Carpentier, David; Coulais, Corentin | Here we show that it is possible to achieve non-orientable mechanics in an orientable metamaterial, rotating-square mechanism. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 696 | Complex pathways in models of coupled hysterons | Van Hecke, Martin; Korovin, George | Complex pathways in models of coupled hysterons | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 697 | Random Close Packing as a Dynamical Phase Transition | Wilken, Sam; Guerra, Rodrigo; Levine, Dov; Chaikin, Paul | Here we show that a simple model, “Biased Random Organization”, BRO, exhibits a dynamical phase transition between absorbing (non-overlapping) and active states that appears to have RCP as its critical endpoint. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 698 | Correlation Lengths in the Language of Computable Information | Martiniani, Stefano; Lemberg, Yuval; Chaikin, Paul; Levine, Dov | Here we show that correlation lengths can be obtained by decimation, thinning a configuration by sampling data at increasing intervals and recalculating the CID. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 699 | Jerky active matter: a phase field crystal model with translational and orientational memory | te Vrugt, Michael; Jeggle, Julian; Wittkowski, Raphael | In this work, we combine modern mathematical methods from particle physics and nonlinear dynamics to derive the general mathematical form of a field theory for soft-matter systems with two different time scales. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 700 | Hysteretic dynamics of driven disordered systems provide insights into biological evolution in a changing environment | Das, Suman; Krug, Joachim; Mungan, Muhittin | Specifically, our model can be described as a Preisach system with interacting hysterons, and it exhibits effects of memory such as hysteresis loops under antibiotic concentration cycling. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 701 | Memory in 3D Cyclically Driven Granular Matter | Benson, Zackery; Peshkov, Anton; Richardson, Derek; Losert, Wolfgang | We perform experimental and numerical studies of a granular system under cyclic-compression to investigate reversibility and memory effects. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 702 | An out-of-equilibrium Gardner-like transition in compressed hard sphere liquids | Morse, Peter; Charbonneau, Patrick | In this talk, we will explore the properties of this dynamical Gardner-like transition–itself is a second form of memory–and its relationship to the aforementioned onset. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 703 | New strategies for memory formation and disruption in non-equilibrium materials | Cohen, Itai | Here, I discuss new strategies for creating and destroying memories in three of these systems: gels, suspensions, and shape memory actuators. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 704 | Disordered hyperuniformity, memory and information coding in droplet chains. | Guzowski, Jan; Buda, Robert; Bogdan, Michal | We develop a model which predicts that the length of the memory is set by the relaxation time and the frequency of droplet generation, in agreement with observations. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 705 | Capturing the local entropy production by data compression | Guo, Buming; Ro, Sunghan; Shih, Aaron; Phan, Trung; Martiniani, Stefano; Levine, Dov; Austin, Robert; Chaikin, Paul | We introduce a universal protocol to estimate local entropy production by data compression. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 706 | Topological characterization of memories formed under oscillatory shear | Graham, Ian; Arratia, Paulo; Riggleman, Robert | Here we consider 2D simulations of jammed Hertzian bidisperse particles and subject the samples to athermal quasistatic shear. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 707 | The Interplay between Memory Training and Stability in Jammed Solids | Arceri, Francesco; Corwin, Eric; Faghir Hagh, Varda | We perform cyclic shear training on marginally stable and highly stable packings, the latter being produced via a constrained minimization of both positional and radial degrees of freedom. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 708 | Characterizing phase transitions in 2D Repulsive Random Organization | Guo, Ashley; Wilken, Sam; Chaikin, Paul; Levine, Dov | Here, we study the random organization model in 2D with the addition of repulsive displacements between particles. | Session 38: Memory Formation in Matter: Encoding, Reading, and Design |
| 709 | Viscous flows with thin, compliant boundaries | Vella, Dominic | I will give examples of some of these unusual behaviours, focussing on situations in which the compliant boundary is in some sense thin, as well as discussing the validity of the different models of boundary deformation. | Session 39: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 710 | On mathemathical modeling of flow and fouling in elastic membrane filters | Sanaei, Pejman; Liu, Shi Yue; Chen, Zhengyi; Christov, Ivan | In this work, we present a mathematical model of an elastic membrane filter with multi-layer bifurcating interior morphology. | Session 39: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 711 | Interaction and coalescence of fluid-driven fractures: numerical predictions versus experiments | Peruzzo, Carlo; Lecampion, Brice; O’Keeffe, Niall; Linden, Paul | We use a numerical solver based on an implicit level set algorithm which notably combines a finite discretization with the asymptotic solution for a steadily moving HF locally near the crack front. | Session 39: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 712 | State and Rate Dependent Contact Line Dynamics over an Aging Soft Surface | Guan, Dongshi; Charlaix, Elisabeth; Tong, Penger | We report direct atomic-force-microscope measurements of capillary force hysteresis (CFH) of a circular contact line (CL) formed on a micron-sized glass fiber, which is coated with a thin layer of soft polymer film and intersects a water-air interface. | Session 39: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 713 | Capillary control of failure in soft composite materials | Suñé, Marc; Wettlaufer, John | Here, we examine the nature of the buckling in inhomogeneous soft composite materials. | Session 39: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 714 | Gel rupture in a dynamic environment | Leslie, Kelsey-Ann; Doane-Solomon, Robert; Arora, Srishti; Curley, Sabrina; Szczepanski, Caroline; Driscoll, Michelle | In this experimental study, we observe the dynamic process of swelling and how internal stresses that develop during swelling lead to the subsequent rupture of the poly(ethylene glycol)-based hydrogels. | Session 39: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 715 | Tunable viscoelasticity of double gel networks: colloidal gel embedded in a hydrogel matrix | Dellatolas, Ippolyti; Cho, Jae Hyung; Bischofberger, Irmgard | We create double gel networks consisting of a colloidal gel embedded within a hydrogel matrix. | Session 39: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 716 | Spontaneous formation of chiral domains in a flowing achiral nematic liquid crystal | Zhang, Qing; Zhang, Rui; Bischofberger, Irmgard | Surprisingly, we find the spontaneous emergence of chiral structures when an achiral lyotropic chromonic liquid crystal (LCLC) in the nematic phase relaxes from a high velocity flow to a steady state lower velocity flow. | Session 39: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 717 | Label-free microfluidic platform for adhesion-based cell sorting | Chrit, Fatima Ezahra; Sulchek, Todd; Alexeev, Alexander | We develop a microfluidic approach for high-throughput and label-free sorting of cells by their affinity for target ligands by molecular surface markers. | Session 39: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 718 | Method for Characterizing Microscopic Void Structure in Porous Media | Ryu, Brian; Zia, Roseanna | We have developed a method for obtaining a detailed quantitative structural description of void structures in a porous medium. | Session 39: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 719 | Compliance-effects in viscous streaming | Bhosale, Yashraj; Parthasarathy, Tejaswin; Gazzola, Mattia | Here we extend our understanding by numerically investigating the effects of solid-boundary elasticity, via a recently developed framework based on remeshed vortex methods coupled to an inverse map technique. | Session 39: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 720 | Formation, growth and coalescence of nanoscopic mesas in stratifying foam films | Xu, Chenxian; Sharma, Vivek | The detailed mechanisms underlying stratification are still under debate, and are resolved in this contribution by addressing long-standing experimental and theoretical challenges. | Session 39: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 721 | How does a glass become a supercooled liquid? Extreme conditions yield new perspectives | Gonzalez-Silveira, Marta; VILA COSTA, ANA; Rodriguez, Marta; Rodriguez-Viejo, Javier | We present here experimental results on the bulk transformation of vapor deposited glasses of different stabilities, showing how the growth of these more mobile regions plays an important role in the softening process in all cases. | Session 40: Molecular Glasses |
| 722 | On the Allowable or Forbidden Nature of Vapor-Deposited Glasses | Wang, Zhe; Bauchy, Mathieu | Here, based on reactive molecular dynamics simulation (MD) of silica glasses, we show that, under certain conditions, vapor-deposited glasses can indeed be more stable than melt-quenched glasses. | Session 40: Molecular Glasses |
| 723 | Glasses Denser than Supercooled Liquid | Jin, Yi; Zhang, Aixi; Govind, Shivajee; Wolf, Sarah; Moore, Alex; Arabi Shamsabadi, Ahmad; Fakhraai, Zahra | Here, we report that thin vapor-deposited films of N, N’-diphenyl- N, N’-bis(3-methylphenyl)-1,1′-biphenyl-4,4′-diamine (TPD) have densities that exceed their corresponding SCL density by as much as 3%. | Session 40: Molecular Glasses |
| 724 | Multiple glass transitions in Freon 113 vapor-deposited orientational glasses | VILA COSTA, ANA; Ràfols Ribé, Joan; Gonzalez-Silveira, Marta; Lopeandía, Aitor; Tamarit, Josep Lluís; Rodríguez Viejo, Javier | In this work, we study the multiple transitions in Freon 133 (1,1,2-trichlorotrifluorethane) vapor-deposited films grown at deposition temperatures ranging from 50 to 120K, well above and below the glassy crystal to plastic crystal transition temperature (T gr=72K). | Session 40: Molecular Glasses |
| 725 | Stable polystyrene glasses through PVD and UV radiation | Yin, Junjie; Raegen, Adam; Forrest, James | In this study, we use them as a starting point and extend our capacity to make high molecular weight polystyrene stable glasses. | Session 40: Molecular Glasses |
| 726 | Specific heat at low temperatures of ultrastable glasses of TPD | Moratalla, Manuel; Rodriguez-Lopez, Marta; Rodriguez-Tinoco, Cristian; Rodriguez-Viejo, Javier; Jimenez-Rioboo, Rafael; Ramos, Miguel | We aim at comparing its behavior at low temperatures to that of its conventional glass and crystalline states. | Session 40: Molecular Glasses |
| 727 | Stability dependence of local elastic inhomogeneities of amorphous solids | Shakerpoor, Alireza; Flenner, Elijah; Szamel, Grzegorz | In this work, we studied the interplay between the stability and the fluctuations in the local elastic constants for a wide range of stabilities. | Session 40: Molecular Glasses |
| 728 | Strong elasticity anisotropy in molecular glasses | Wang, Zuyuan; Cang, Yu; Fytas, George; Bishop, Camille; Ediger, Mark | In this work, we use micro-Brillouin light spectroscopy to determine the elastic stiffness tensors of three glass films of itraconazole vapor-deposited at substrate temperatures ( T sub) of 330, 315, and 290 K, respectively. | Session 40: Molecular Glasses |
| 729 | Improved Mechanical Properties of Organic Stable Glasses by Nanoindentation | Wolf, Sarah; Fulco, Sage; Zhang, Aixi; Jin, Yi; Govind, Shivajee; Zhao, Haoqiang; Walsh, Patrick; Turner, Kevin; Fakhraai, Zahra | Using a temperature gradient for high-throughput acquisition of data, and nanoindentation for investigation of mechanics, we find that accurate determination of these properties requires a careful approach due to surface detection error. | Session 40: Molecular Glasses |
| 730 | The Role of Intramolecular Relaxation in the Stability, Optical Birefringence, and Structural Anisotropy of Vapor Deposited Glasses | Zhang, Aixi; Zhao, Haoqiang; Wolf, Sarah; Govind, Shivajee; Jin, Yi; Moore, Alex; Riggleman, Robert; Walsh, Patrick; Fakhraai, Zahra | Here, we choose two molecules: α,α-A and α,α-Phen, which differ by a substituent, anthracenyl (A) versus phenanthrenyl (Phen), on the 3,5-di(naphthalen-1-yl)benzene moiety (diarylbenzene). | Session 40: Molecular Glasses |
| 731 | Influence of isomeric ratio on stable glass forming ability and secondary relaxations in vapor-deposited mixtures of cis/trans-decahydroisoquinoline | Kasting, Benjamin; Tracy, Megan; Gabriel, Jan; Guiseppi-Elie, Anthony; Richert, Ranko; Ediger, Mark | Here, we use in situ AC nanocalorimetry and interdigitated electrode broadband dielectric spectroscopy to explore the effect of varying the ratio of cis/trans isomers in vapor-deposited glasses of decahydroisoquinoline (DHIQ). | Session 40: Molecular Glasses |
| 732 | Ultrastable Polymer Glass | Raegen, Adam; Yin, Junjie; Zhou, Qi; Forrest, James | We report the preparation and characterization of stable glasses of polymers (polystyrene and poly (methyl methacrylate) prepared by physical vapour deposition. | Session 40: Molecular Glasses |
| 733 | Anisotropy and Anharmonicity in Polystyrene Stable Glass | Raegen, Adam; Zhou, Qi; Yin, Junjie; Forrest, James | We have used spectroscopic ellipsometry to characterize the anisotropy in stable polymer glasses prepared by physical vapour deposition. | Session 40: Molecular Glasses |
| 734 | Physical properties of ultrastable computer-generated glasses. | Berthier, Ludovic | In this talk, we show that this discovery has allowed a deeper understanding of the rheological, thermodynamic and thermal properties of amorphous solids. | Session 41: Molecular Glasses and Liquids |
| 735 | Probing the Dynamics of Molecular Stable Glasses Using Solvent Vapor Annealing with In-situ Ellipsometry | Govind, Shivajee; Zhang, Aixi; Jin, Yi; Wolf, Sarah; Fakhraai, Zahra | We introduce a novel and indirect method of measuring the dynamics of SGs using solvent vapor annealing (SVA), combined with in-situ ellipsometry. | Session 41: Molecular Glasses and Liquids |
| 736 | The role of the free surface state in the formation of simulated physically vapor deposited glasses | Moore, Alex; Jin, Yi; Zhang, Aixi; Govind, Shivajee; Wolf, Sarah; Zhao, Haoqiang; Walsh, Patrick; Fakhraai, Zahra; Riggleman, Robert | In this work, we use molecular dynamics simulations to study a coarse-grained model glass-former based on the molecule 9-(3,5-di(naphthalen-1-yl)phenyl)anthracene (α,α-A), within which we vary the strength of the dihedral potential on the respective side-groups to systematically study the effects of intramolecular degrees of freedom on molecular packing. | Session 41: Molecular Glasses and Liquids |
| 737 | Simulating PVD Glass: Over What Length Scale Does an Inorganic Substrate Perturb the Structure of a Glassy Organic Semiconductor? | DENG, CHUTING; Bagchi, Kushal; Bishop, Camille; Jackson, Nicholas; Ediger, Mark; De Pablo, Juan | Here, we combine coarse-grained molecular dynamics (MD) simulation and experiments to study the molecular structures at the buried interfaces of PVD glass of an organic semiconductor, DSA-Ph (1,4-di-[4-(N,N-diphenyl)amino]styrylbenzene), on different substrates. | Session 41: Molecular Glasses and Liquids |
| 738 | Aging dynamics in a model polymeric glass-former far from equilibrium | Jaeger, Tamara; Simmons, David | Below T A, the we find that the timescale for aging in overdense glasses can be predicted with zero parameters from equilibrium behavior via an Arrhenius interpolation between T A and the temperature of departure from equilibrium, again identifying T A as key to understanding the nature of glasses. | Session 41: Molecular Glasses and Liquids |
| 739 | Structural signature of super-Arrhenian behavior | Caruthers, James; Yungbluth, Jack; Savoie, Brett; Medvedev, Grigori | In this communication we report on a promising candidate for a structural feature that correlates with the emergence of super-Arrhenian behavior in glass forming materials. | Session 41: Molecular Glasses and Liquids |
| 740 | Microscopic origin of excess wings in the relaxation spectra of deeply supercooled liquids | Scalliet, Camille; Guiselin, Benjamin; Berthier, Ludovic | We devise a simple model based on these observations, and successfully reproduce the qualitative shape of dielectric loss spectra, including the excess wing. | Session 41: Molecular Glasses and Liquids |
| 741 | Dynamics of machine-learned softness in supercooled liquids | Ridout, Sean; Liu, Andrea | Here we develop a phenomenological model for how the softness of particles evolves in time in and out of equilibrium. | Session 41: Molecular Glasses and Liquids |
| 742 | Jump-Precursor State and a Lengthening Rate-Exchange Time in the Crossover Region of Supercooled o-Terphenyl | Kaur, Harveen; Berg, Mark | The same methods applied to single-molecule data [Phys. | Session 41: Molecular Glasses and Liquids |
| 743 | Development of Coarse-Grained Models for Glass Forming Liquids | Yungbluth, Jack; Savoie, Brett; Caruthers, James; Medvedev, Grigori | In this paper we report on the development of molecular models which are simple enough for fast simulations, but that also possess stable super-cooled liquid and crystalline phases. | Session 41: Molecular Glasses and Liquids |
| 744 | Are Collective Relaxation Events in Liquids and Glass Bosonic in Nature? | Cicerone, Marcus | We will present evidence through the temperature dependence of Φ_0 that these fundamental relaxation events (upon which all other relaxation events are built) are bosonic excitations in the liquid or glass. | Session 41: Molecular Glasses and Liquids |
| 745 | A Simple New Way to Account for Free Volume in Glassy Dynamics: Model-Free Estimation of the Close-Packed Volume from PVT Data | White, Ronald; Lipson, Jane E | We explained this behavior mechanistically through the cooperative free volume rate model (CFV). | Session 41: Molecular Glasses and Liquids |
| 746 | Connection between liquid and glassy states in water | Martelli, Fausto; Leoni, Fabio; Sciortino, Francesco; Russo, John | Here, we develop a Neural Network scheme capable of discerning local structures beyond tetrahedrality. | Session 41: Molecular Glasses and Liquids |
| 747 | Mechanisms of Diffusive Charge Transport in Redox-Active Polymer Solutions | Bello, Liliana; Sing, Charles | We use simulations and theory to show how a variety of molecular charge transport mechanisms affect diffusive motion in RAP solutions. | Session 42: Molecular and Ion Transport in Polymers |
| 748 | Li+ Ion Migration in Polymer Electrolytes: How Coordination Effects Control Li+ Transport Mechanisms | Schönhoff, Monika; Rosenwinkel, Mark; Andersson, Rassmus; Mindemark, Jonas | To shed light on the influence of the coordination properties of different polymer architectures and to identify their influence on Li ion transport, we compare PEO, poly(ε-caprolactone) (PCL), poly(trimethylene carbonate) (PTMC), and a PCL-co-PTMC random co-polymer, combined with the Lithium salt LiTFSA at varying Li +:monomer ratio r. Employing multinuclear Pulsed-Field-Gradient (PFG)-NMR diffusion, we obtain ion-specific transport information. | Session 42: Molecular and Ion Transport in Polymers |
| 749 | Understanding the Effect of Permanent Crosslinks in Dense Polymer Networks on Probe Diffusion | Sheridan, Grant; Evans, Christopher | Understanding the Effect of Permanent Crosslinks in Dense Polymer Networks on Probe Diffusion | Session 42: Molecular and Ion Transport in Polymers |
| 750 | Dissociation of Lithium Salt in Block Copolymer | Kim, Kyoungmin; Kuhn, Leah; Alabugin, Igor; Hallinan, Daniel | In this study, the interaction between lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) and polystyrene (PS) – poly(ethylene oxide) (PEO) diblock copolymer was investigated using Fourier transform infrared (FTIR) spectroscopy and density functional theory (DFT) simulation. | Session 42: Molecular and Ion Transport in Polymers |
| 751 | Role of Zwitterion Addition on Ion Conduction in Polymer Electrolytes | Mei, Wenwen; Bostwick, Joshua; Hickey, Robert; Colby, Ralph | We find that addition of zwitterions to a model single-ion conducting polymer significantly increased the dielectric constant and slightly increased T g. Consequently, ionic conductivity increased despite the increase of T g. | Session 42: Molecular and Ion Transport in Polymers |
| 752 | Ion Mobilities, Transference Numbers and Inverse Haven Ratios of Polymeric Ionic Liquids | Zhang, Zidan; Wheatle, Bill; Krajniak, Jakub; Keith, Jordan; Ganesan, Venkatraghavan | In contrast to expectations, we demonstrate that the inverse Haven ratio increases with increasing degree of polymerization ( N) and then decreases at larger N. For a fixed center of mass reference frame, we demonstrate that such results arise as a consequence of the strong cation-cation correlated motions which exceed (in magnitude) the self-diffusivity of cations. | Session 42: Molecular and Ion Transport in Polymers |
| 753 | Probing ion diffusion in chemically amplified resists through experiments and atomistic simulations | Bottoms, Christopher; Terlier, Tanguy; Stein, Gila; Doxastakis, Manolis | We present a concerted experimental and computational effort to examine diffusion of an inert catalyst analogue (a cation-anion pair) in the protected and deprotected states of a model terpolymer resin. | Session 42: Molecular and Ion Transport in Polymers |
| 754 | Ion co-transport with alcohol in cation exchange membranes | Kim, Jung Min; Beckingham, Bryan | Here, we investigate the transport behavior of Nafion® 117 and PEGDA-AMPS cation exchange membranes to co-ion (formate or acetate) and alcohol (methanol and ethanol), where we observe an increase in both formate and acetate permeability in co-permeation with either methanol or ethanol. | Session 42: Molecular and Ion Transport in Polymers |
| 755 | Surface-Induced Ordering Depresses Through-Film Ionic Conductivity in Lamellar Block Copolymer Electrolytes | Coote, Jonathan; Kinsey, Thomas; Street, Dayton; Kilbey, S.; Sangoro, Joshua; Stein, Gila | This work hypothesizes that structural anisotropy is a consequence of surface-induced ordering, where preferential adsorption of one block at the electrode drives a short-range stacking of the lamellae. | Session 42: Molecular and Ion Transport in Polymers |
| 756 | Solvent Effects on the Transference Number of Dilute Polyelectrolyte Solutions | Lytle, Tyler; Yethiraj, Arun | Our work uses molecular dynamics simulations of coarse-grained polymer models to elucidate how chain length and solvent type affect the ion transference number in solution. | Session 42: Molecular and Ion Transport in Polymers |
| 757 | Understanding Gas Transport in Polymer-Grafted Nanoparticle Assemblies | Kumar, Sanat | For a given NP radius and grafting density in the dense brush regime we find that gas permeabilities display a maximum as a function of the graft chain molecular weight. | Session 42: Molecular and Ion Transport in Polymers |
| 758 | Programming stiff inflatable shells from planar patterned fabrics | Siefert, Emmanuel; Gao, Tian; Bico, Jose; Reyssat, Etienne; Roman, Benoit | We introduce a versatile single-step method to shape-program stiff inflated structures, opening the door for numerous large scale applications, ranging from space deployable structures to emergency shelters. | Session 43: Morphing Matter: From Soft Robotics to 4D Printing |
| 759 | Micron sized kirigami robots – Design and inverse design | Griniasty, Itay; Sinhmar, Himani; Liu, Qingkun; Wang, Wei; Kress-Gazit, Hadas; Sethna, James; Cohen, Itai | To test this conjecture we derive an analytical inverse design method at the thermodynamic limit, and employ numerical optimization to design finite sized shape shifting sheets. | Session 43: Morphing Matter: From Soft Robotics to 4D Printing |
| 760 | Shape change through elastic phase-separation | Siefert, Emmanuel; Roman, Benoit; Bico, Jose; Reyssat, Etienne | We observed an unexpeted instability in an architected elastomer plate that includes an internal network of airways (”baromorph”). | Session 43: Morphing Matter: From Soft Robotics to 4D Printing |
| 761 | Inflatable grippers | Andrade-Silva, Ignacio; Marthelot, Joel | We propose a star-shaped tube made of successive V-shaped tubes forming a closed loop as a mechanical actuator. | Session 43: Morphing Matter: From Soft Robotics to 4D Printing |
| 762 | Oscillating Membranes: Controlling Autonomous Shape-transforming Sheets | Levin, Ido; Deegan, Robert; Sharon, Eran | Here we present the first autonomously shape-shifting soft sheets and show that these have the potential to achieve the locomotive capabilities of living organisms. | Session 43: Morphing Matter: From Soft Robotics to 4D Printing |
| 763 | Morphing LCE surface coatings with topological defects: simulation studies | Selinger, Robin; Mosaddeghian Golestani, Youssef; Selinger, Jonathan; Afghah, Sajedeh; Varga, Michael | We model shape-morphing in temperature-responsive dynamic thin film coatings with patterned disclinations oriented either parallel or perpendicular to the surface normal. | Session 43: Morphing Matter: From Soft Robotics to 4D Printing |
| 764 | Using Bifurcation theory to instruct design of Magneto-Elastic Machines | Griniasty, Itay; Hathcock, David; Yang, Teaya; Chen, Yuchao; Sethna, James; Cohen, Itai | To find these rare patterns, we adapt a continuation algorithm that follows bifurcations of growing order along a one dimensional curve in the system’s multidimensional phase space. | Session 43: Morphing Matter: From Soft Robotics to 4D Printing |
| 765 | All-in-One Design of Soft Machines | Brun, Pierre-Thomas; Jones, Trevor; Jambon-Puillet, Etienne | To bridge the gap on nature, we introduce an all-in-one approach to building soft machines. | Session 43: Morphing Matter: From Soft Robotics to 4D Printing |
| 766 | Architected balloons | Charpentier, Victor; Bourgeois, Stephane; Marthelot, Joel | Here we study how the addition of local surface artifacts, creating an architected material, can lead to tailor-made deployed geometry for tube like balloons while allowing to retain control over the mechanical behavior during deployment. | Session 43: Morphing Matter: From Soft Robotics to 4D Printing |
| 767 | Untethered Shape-changing elastomer via liquid-gas phase transition | Saint-Jean, Maïka; Roman, Benoit; Reyssat, Etienne; Bico, Jose | We present a new system capable of untethered shape-morphing, using an elastomer-alcohol composite capable of large expansion when heated. | Session 43: Morphing Matter: From Soft Robotics to 4D Printing |
| 768 | Shape programming by modulating actuation using zigzag patterns | Gao, Tian; Siéfert, Emmanuel; DeSimone, Antonio; Roman, Benoit | Here, we present a novel strategy where inextensible thin patches are sealed along zigzag paths to generate complex shape transformation under applied pressure. | Session 43: Morphing Matter: From Soft Robotics to 4D Printing |
| 769 | Discrete 4D printing | Kim, Kyung Eun; Santangelo, Christian | In our analysis, propose an optimal discrete structure for which it is computationally easier to find shape given edge lengths and propose a way to count possible solutions. | Session 43: Morphing Matter: From Soft Robotics to 4D Printing |
| 770 | Pluripotent Magnetically Actuated Origami | Kassabova, Dora; Pinson, Matthew; McEuen, Paul; Cohen, Itai | Our idea is that if the folding patterns are sufficiently different so that they do not share creases, it is possible to design pluripotent sheets with multiple target shapes. | Session 43: Morphing Matter: From Soft Robotics to 4D Printing |
| 771 | Liquid crystal patterns to command living matter | Lavrentovich, O | To establish communication with microscale biological systems, we propose to use special classes of nontoxic liquid crystal with a long-range orientational order. | Session 44: Non-Equilibrium Bioinspired Modes of Assembling Materials |
| 772 | Pattern Formation from Instabilities in Liquid Crystals | Bischofberger, Irmgard | We investigate such morphology transitions between dendritic growth and dense-branching growth in an intrinsically anisotropic liquid; a lyotropic chromonic liquid crystal in the nematic phase. | Session 44: Non-Equilibrium Bioinspired Modes of Assembling Materials |
| 773 | Reaction-Diffusion Driven Pattern Formation in Soft Materials | Sottos, Nancy; Lloyd, Evan; Paul, Justine; Geubelle, Philippe; Moore, Jeffrey | This talk will describe several novel methods to control thermal transport in this system, giving rise to symmetry breaking events that enable complex, emergent pattern formation and control over growth, topology, and shape. | Session 44: Non-Equilibrium Bioinspired Modes of Assembling Materials |
| 774 | Cellulose nanocrystal holograms | Vignolini, Silvia | [3,4] In this talk, we present a simple and robust method to spatially control the angular response of CNC films by casting them in close vicinity to commercially available templated magnets (Polymagnets ® ). | Session 44: Non-Equilibrium Bioinspired Modes of Assembling Materials |
| 775 | Programming dynamic pathways to colloidal self-assembly using DNA nanotechnology | Rogers, William; Hensley, Alexander | In this talk, I will present experiments showing that combining DNA-grafted particles with free DNA oligomers dispersed in solution can create suspensions with new types of assembly pathways. | Session 44: Non-Equilibrium Bioinspired Modes of Assembling Materials |
| 776 | Disordered micelle regime for conformationally asymmetric sphere-forming diblock copolymers | Cheong, Guo Kang; Dorfman, Kevin | We examined the structure of the disordered state through both real space method and its structure factor. | Session 45: Non-Equilibrium and Process-Dependent Mesoscale Structures of Polymeric Compounds |
| 777 | Structure Analysis of Spherical Block Copolymer Micelles using Inverse Fourier Transform Method | Lee, Sangwoo; Chen, Liwen | Structure Analysis of Spherical Block Copolymer Micelles using Inverse Fourier Transform Method | Session 45: Non-Equilibrium and Process-Dependent Mesoscale Structures of Polymeric Compounds |
| 778 | Effects of trace water on the self-assembly kinetics and nanoscale structure of sulfonated block copolymers during solution processing | Madathil, Karthika; Lantz, Kayla; Stefik, Morgan; Stein, Gila | In this work, we examine (1) the structure of an SBC in an organic solvent mixture with varying molar ratios of water to sulfonic acid (λ); and (2) the morphology of the corresponding solvent-cast films. | Session 45: Non-Equilibrium and Process-Dependent Mesoscale Structures of Polymeric Compounds |
| 779 | Nonsolvent Induced Phase Separation in Polymer Droplets | Tree, Douglas; Alhasan, Rami; Wilcoxson, Tanner; Banks, Dakota | In our approach, we use simulations of a phase-field model of a polymer solution to examine the effect of mass transfer, hydrodynamics and geometry on the formation of microstrucure. | Session 45: Non-Equilibrium and Process-Dependent Mesoscale Structures of Polymeric Compounds |
| 780 | Process-directed self-assembly of copolymer materials | Mueller, Marcus | The talk will discuss computational challenges for predicting the kinetics of process-directed self-assembly of copolymers by particle-based and continuum models [2-5] such as the coupling between the time evolution of the morphology and the underlying diffusive dynamics of the copolymers [4,5], and the role of nonequilibrium molecular conformations [3]. | Session 45: Non-Equilibrium and Process-Dependent Mesoscale Structures of Polymeric Compounds |
| 781 | Polymerization-induced phase separation in epoxy-amine networks with broadly and systematically tunable length scales | Jones, Brad; Alam, Todd; Celina, Mat; Lee, Sangwoo | We introduce an approach to polymerization-induced phase separation in epoxy-amine networks that enables domain sizes to be tuned over a broad range, from nanoscale to macroscale. | Session 45: Non-Equilibrium and Process-Dependent Mesoscale Structures of Polymeric Compounds |
| 782 | Interfacial reaction-induced roughening in reactive polymer blends | Sengupta, Rajarshi; Tikekar, Mukul; Delaney, Kris; Villet, Michael; Fredrickson, Glenn | We quantify the onset of interfacial roughening in reactive polymer blends in a layered geometry, using a phase-field model. | Session 45: Non-Equilibrium and Process-Dependent Mesoscale Structures of Polymeric Compounds |
| 783 | Synthesis of Mesoporous Polymer Networks using Thermokinetic Processing of a Colloidal Template | Fenton, Scott; Helgeson, Matthew | To help address the shortfalls of these and other conventional techniques, we introduce a new phase separation technique involving thermal processing of colloidal templates based on self-assembling nanoemulsions to create polymer networks with bicontinuous pore morphologies. | Session 45: Non-Equilibrium and Process-Dependent Mesoscale Structures of Polymeric Compounds |
| 784 | Understanding Interfacial Interactions in Bijels | Alhasan, Rami; Tree, Douglas | In this work, we aim to quantitatively understand the surface energy of the fluid-fluid-particle interface and how these forces influence jamming. | Session 45: Non-Equilibrium and Process-Dependent Mesoscale Structures of Polymeric Compounds |
| 785 | Kinetic Monitoring of Block Copolymer Self-Assembly using In-Situ Spectroscopic Ellipsometry | Bilchak, Connor; Govind, Shivajee; Maguire, Shawn; Rasin, Boris; Composto, Russell; Fakhraai, Zahra | Here, we demonstrate a novel approach that uses optical birefringence, determined by spectroscopic ellipsometry (SE), as a measure of domain formation in cylinder- and lamellae- forming BCP films. | Session 45: Non-Equilibrium and Process-Dependent Mesoscale Structures of Polymeric Compounds |
| 786 | Processing Path-Dependent Complex Micelle Packings of Hydrated Small Molecule Amphiphiles | Mahanthappa, Mahesh | In spite of the low molecular weights of the constituent amphiphiles, we recently demonstrated that judicious thermal processing of an A15 LLC enables formation of a surprisingly long-lived, non-equilibrium state. | Session 45: Non-Equilibrium and Process-Dependent Mesoscale Structures of Polymeric Compounds |
| 787 | Phase-shift and Amplitude Analysis Reveal Stages of Nanoparticle-Assisted Photothermal Annealing of Polydimethylsiloxane | Zahedian, Maryam; Dragnea, Bogdan | In this study, we show that, in conjunction with the more widespread modulation amplitude measurement, the photothermal phase provides a complementary, sensitive probe of thermally-induced changes in the local medium properties. | Session 46: Optics and Photonics in Polymers and Soft Matter: Imaging, Characterization and Patterning |
| 788 | Improved characterization of colloidal spheres by modeling effects of spherical aberration in digital holography microscopy | Martin, Caroline; Leahy, Brian; Manoharan, Vinothan | We develop a model for spherical aberration and fit it to experimental data. | Session 46: Optics and Photonics in Polymers and Soft Matter: Imaging, Characterization and Patterning |
| 789 | Understanding confinement effects on polymer chain conformation using Förster resonance energy transfer | Fortenberry, Alexander; Qiang, Zhe | This study aims to determine confinement effects on polymer chain conformation using Förster resonance energy transfer (FRET). | Session 46: Optics and Photonics in Polymers and Soft Matter: Imaging, Characterization and Patterning |
| 790 | Deactivation wavelength effect on super-resolution in 3 color lithography thin films | Gutierrez Razo, Sandra; Liaros, Nikolaos; Zeppuhar, Andrea; Petersen, John; Fourkas, John | In this work, we show the effect of optimizing the deactivation wavelength on features in thin films. | Session 46: Optics and Photonics in Polymers and Soft Matter: Imaging, Characterization and Patterning |
| 791 | Super-resolution Interference Lithography using Photochromic Photoresists: Towards bulk volume nanopatterning | Vijayamohanan, Hari; Habib, Adela; Sundararaman, Ravishankar; Palermo, Edmund; Ullal, Chaitanya | In order to facilitate this, we develop an efficient electromagnetic (EM) perturbation theory approach that facilitates fully coupled simulations of EM and chemical kinetics to quantitatively analyze the influence of time dependent optical dynamics such as absorption, diffraction, and intensity modulation on the resist chemical kinetics. | Session 46: Optics and Photonics in Polymers and Soft Matter: Imaging, Characterization and Patterning |
| 792 | Designable Non-linear Optics of Light-Responsive, Spiroypyran-Functionalized Hydrogels | Meeks, Amos; Mac, Rebecca; Chathanat, Simran; Aizenberg, Joanna | We demonstrate the potential of spiropyran-functionalized, light-responsive hydrogels to be a promising new platform for nonlinear optical materials. | Session 46: Optics and Photonics in Polymers and Soft Matter: Imaging, Characterization and Patterning |
| 793 | Excitonic Wave Function Reconstruction from Near-Field Spectra Using Machine Learning Techniques | Zheng, Fulu; Nayak, Sidhartha; Gao, Xing; Eisfeld, Alexander | Here we show that from spatially resolved near field spectra it is possible to reconstruct the underlying delocalized aggregate eigenfunctions [2, 3]. | Session 46: Optics and Photonics in Polymers and Soft Matter: Imaging, Characterization and Patterning |
| 794 | Prediction of Effective Optical Properties of Composites via Nonlocal Strong-Contrast Expansions | Torquato, Salvatore; Kim, Jaeuk | Here we derive exact expressions for the nonlocal effective dielectric constants of two-phase composites at intermediate wavelengths by using the "strong-contrast" expansion formalism. | Session 46: Optics and Photonics in Polymers and Soft Matter: Imaging, Characterization and Patterning |
| 795 | Understanding the Working Mechanism of Vertical Organic Light Emitting Transistors | DAHAL, DRONA; Radha Krishnan, Raj Kishen; Paudel, Pushpa; Kaphle, Vikash; Lussem, Bjorn | Here, we study the operation of VOLETs experimentally and theoretically. | Session 46: Optics and Photonics in Polymers and Soft Matter: Imaging, Characterization and Patterning |
| 796 | Visualizing and controlling polymer nanostructures through in situ optical imaging and synthesis | Wang, Muzhou | In this talk, we will present several of these studies. | Session 46: Optics and Photonics in Polymers and Soft Matter: Imaging, Characterization and Patterning |
| 797 | Super Resolution mediated direct visualization of spatial heterogeneities in bulk PNIPAM hydrogels | Kenath, Gopal Sankar; Karanastasis, Apostolos; Yepikhin, Alexander; Ullal, Chaitanya | Here, we report on a super resolution mediated structural study of spatial heterogeneities within bulk PNIPAM hydrogels. | Session 46: Optics and Photonics in Polymers and Soft Matter: Imaging, Characterization and Patterning |
| 798 | Resin design for deterministic control of volumetric 3d printing | Liu, Changda; Rackson, Charles; McLeod, Robert | We introduce a resin design scheme that provides deterministic control over the inhibition threshold dose in such resins. | Session 46: Optics and Photonics in Polymers and Soft Matter: Imaging, Characterization and Patterning |
| 799 | Color, structure, and rheology of a diblock bottlebrush copolymer solution | Wade, Matthew; Walsh, Dylan; Lee, Ching-Wei; Kelley, Elizabeth; Weigandt, Kathleen; Guironnet, Damien; Rogers, Simon | At the highest rates applied the solution is indigo. | Session 47: Optics and Photonics in Polymers and Soft Matter: Photonics |
| 800 | Investigating the trade-off between color saturation and angle-independence in photonic glasses | Xiao, Ming; Stephenson, Anna; Hwang, Victoria; Manoharan, Vinothan | To understand why, we quantitatively analyze the trade-off between saturation and angle-dependence in photonic glasses. | Session 47: Optics and Photonics in Polymers and Soft Matter: Photonics |
| 801 | Combined electric and photocontrol of selective light reflection by oblique helicoidal cholesteric doped with azobenzene derivative | Thapa, Kamal; Iadlovska, Olena; Bisoyi, Hari; Paterson, Daniel; Storey, John; Imrie, Corrie; Li, Quan; Shiyanovskii, Sergij; Lavrentovich, O | In this work, we demonstrate that a combined action of the electric field and UV irradiation could continuously tune the pitch of a Ch OH material doped with photosensitive azobenzene molecules capable of trans-cis isomerization. | Session 47: Optics and Photonics in Polymers and Soft Matter: Photonics |
| 802 | Bragg diffraction of obliquely incident light at heliconical cholesteric structures | Iadlovska, Olena; Mrukiewicz, Mateusz; Shiyanovskii, Sergij; Lavrentovich, O | We develop a model of light propagation in Ch OH that explains and reproduces the observed optical effects at oblique incidence of light that might be attractive for applications such as electrically tunable band-pass filters, mirrors, low-threshold lasers, etc. | Session 47: Optics and Photonics in Polymers and Soft Matter: Photonics |
| 803 | Easy to pattern, chemically resistant 1-dimensional polymer photonics | Robertson, Mark; Qiang, Zhe | Herein, we demonstrate a relatively simple and scalable approach to fabricate chemically resistant PCs from cheap commercially available materials, poly(vinylidene fluoride-co-chlorotrifluoroethylene) (PVDF-CTFE) and phenolic resin (resol), using dip-coating to tune the λ max of the PC by adjusting the substrate moving velocity. | Session 47: Optics and Photonics in Polymers and Soft Matter: Photonics |
| 804 | Responsive Polyelectrolyte Multilayer Cladding for Reversibly Programmable Photonics | Sproncken, Christian; Mohammed, Mahir; Gumí-Audenis, Berta; Lazdanaité, Emilija; Stabile, Ripalta; Raz, Oded; Voets, Ilja | We present two approaches to control this shift of the device output. | Session 47: Optics and Photonics in Polymers and Soft Matter: Photonics |
| 805 | Self-Assembly of Colloidal Diamond | Pine, David; He, Mingxin; Gales, Johnathon; Ducrot, Étienne; Gong, Zhe; Yi, Gi-Ra; Sacanna, Stefano | We show that by synthesizing partially compressed tetrahedral clusters with retracted sticky patches, colloidal cubic diamond can be self-assembled using patch-patch adhesion in combination with a steric interlock mechanism that selects the proper staggered bond orientation. | Session 47: Optics and Photonics in Polymers and Soft Matter: Photonics |
| 806 | Waveguide Encoded Lattices (wels): slim polymer films with enhanced fields of view inspired by arthropodal compound eyes. | Benincasa, Kathryn; Saravanamuttu, Kalaichelvi; Fradin, Cecile | In this presentation, we will describe a family of 2 mm to 3 mm thick, polymer films inscribed with WELs, which – like arthropodal compound eyes – have enhanced panoramic field of view (FOV). | Session 47: Optics and Photonics in Polymers and Soft Matter: Photonics |
| 807 | Electrodynamic modeling of leafhopper brochosomes for synthetic antireflective coatings | Banerjee, Progna; Burks, Gabriel; Bialik, Sarah; Bello, Elizabeth; Alleyne, Marianne; Barrick, Jeffrey; Schroeder, Charles; Milliron, Delia | Using electrodynamic near-field modeling simulations, we study the optical properties by varying the brochosome geometry, arrangements (ordered/disordered with different packing fractions), material properties, and leafhopper species. | Session 47: Optics and Photonics in Polymers and Soft Matter: Photonics |
| 808 | Chiral Liquid Crystal Lenses Confined in Microchannels | Hare, Sean; Lunsford-Poe, Beatrice; Kim, MinSu; Serra, Francesca | We have explored a weakly chiral system in which both types of defects can be present in the same material at different temperatures, and demonstrated a strategy for creating tunable lenses whose focal length can be changed with temperature. | Session 47: Optics and Photonics in Polymers and Soft Matter: Photonics |
| 809 | Thermal-Responsive Second Harmonic Generation in Poly(Ethylene Oxide)/Chromophore Crystalline Films | Xu, Yifan; Zu, Rui; Martin, Rachel; Gopalan, Venkatraman; Hickey, Robert | Here, we present that films composed of poly(ethylene oxide)/ 2-chloro-4-nitroaniline (PEO/CNA) host-guest crystalline complexes exhibit stable and long-term second harmonic generation (SHG) activity, which is a result of the alignment of chromophore molecules during film crystallization. | Session 47: Optics and Photonics in Polymers and Soft Matter: Photonics |
| 810 | Transient Laser Heating Enabled Nanocomposite Structures from Block Copolymers toward Photonic & Phononic Quantum Materials | Yu, Fei; Zhang, Qi; Wiesner, Ulrich | Detailed analysis of X-ray scattering data reveals symmetry reduction from cubic alternating gyroids to orthorhombic networks with D2 point group symmetry. | Session 47: Optics and Photonics in Polymers and Soft Matter: Photonics |
| 811 | A Soft Photopolymer Cuboid That Computes with Binary Strings of Light | Hudson, Alexander; Ponte, Matthew; Mahmood, Fariha; Pena Ventura, Thomas; Saravanamuttu, Kalaichelvi | In this presentation, we discuss a polymer with a nonlinear optical response – namely, a light-induced increase in refractive index – and describe how this response can form the basis of computing-inspired functions. | Session 47: Optics and Photonics in Polymers and Soft Matter: Photonics |
| 812 | A statistical mechanical theory for the origin of rigidity in crystalline solids | Sengupta, Surajit | We show that crystals loose rigidity as a consequence of a symmetry breaking, first order, phase transition at zero deformation [1]. | Session 48: Origin of Rigidity and the Nature of the Yielding Transition in Solids |
| 813 | Activity-driven Fluidization and Jamming of Dense Particulate Systems: The Extreme Active Limit | Bedi, Deshpreet; Mandal, Rituparno; Chaudhuri, Pinaki; Rao, Madan; Dasgupta, Chandan; Chakraborty, Bulbul | We find that there is a threshold force above which the system fluidizes indefinitely but below which the system experiences dynamical arrest, and that this threshold force increases as the density of the system is increased. | Session 48: Origin of Rigidity and the Nature of the Yielding Transition in Solids |
| 814 | Microscopic ergodicity breaking governs the emergence and evolution of elasticity in glass-forming nanoclay suspensions | Chen, Yihao; Rogers, Simon; Narayanan, Suresh; Harden, James; Leheny, Robert | We report a study employing x-ray photon correlation spectroscopy (XPCS) and in situ rheometry to investigate the microscopic dynamics and rheology of Laponite suspensions, composed of nanoscale discoidal colloids with concentrations from 3.25 to 3.75 wt%, which evolve over time from a fluid to a soft glass that displays aging behavior. | Session 48: Origin of Rigidity and the Nature of the Yielding Transition in Solids |
| 815 | Quantification of viscoelasticity using dynamic Atomic Force Microscopy in liquid environment | Rajput, Shatruhan; Patil, Shivprasad | We propose the appropriate ways of performing measurements and theoretical model for data analysis which accurately quantify the dissipation and stiffness of nanoscale interactions in aqueous environment. | Session 48: Origin of Rigidity and the Nature of the Yielding Transition in Solids |
| 816 | Multiscale Framework for Simulating Mechanical Behaviour of Clay from Nano- and Meso- to Macro-scale | Zhu, Hejian; Whittle, Andrew; Pellenq, Roland | In this presentation, a multiscale framework will be presented, linking the mechanical properties of illite from atomistic up to macroscopic scales. | Session 48: Origin of Rigidity and the Nature of the Yielding Transition in Solids |
| 817 | Second Order Rigidity: A Unifying Theory of Rigidity and its Origins | Damavandi, Ojan; Faghir Hagh, Varda; Santangelo, Christian; Manning, M Lisa | We introduce the framework of second order rigidity to classify systems based on their internal prestresses and make general predictions about their rigidity. | Session 48: Origin of Rigidity and the Nature of the Yielding Transition in Solids |
| 818 | The Twin Dilemma: When is a Jammed Packing not Actually Jammed? | Corwin, Eric; Dennis, Robert; Faghir Hagh, Varda | We show that when critically jammed sphere packings are replicated they unjam through the creation of new zero modes. | Session 48: Origin of Rigidity and the Nature of the Yielding Transition in Solids |
| 819 | Prediction of amorphous plasticity based on nonaffine lattice dynamics | Kriuchevskyi, Ivan; Sirk, Timothy; Zaccone, Alessio | We propose to extend the theory to large deformations by constructing the INM of deformed states (γINM) using the instantaneous Affine Transform (AT) from the non-deformed state (γ = 0) to the deformed state as a proxy for non-equilibrated protocol that generates the γINMs. | Session 48: Origin of Rigidity and the Nature of the Yielding Transition in Solids |
| 820 | Intermediate soft layer for optimized throws | Giombini, Guillaume; Mathiesen, Joachim; Argentina, Médéric; D’Angelo, Christophe; Celestini, Franck; Raufaste, Christophe | Here we show that the kinetic energy of a rigid projectile is greatly increased thanks to a geometrical change: the addition of an intermediate soft layer between the throwing device and the projectile [2]. | Session 48: Origin of Rigidity and the Nature of the Yielding Transition in Solids |
| 821 | Yielding and mechanical failure in (amorphous) solids | Horbach, Juergen | Recently, a Monte Carlo simulation study [1] has shown that yielding in crystalline solids is associated with an underlying quasi-static first-order phase transition. | Session 48: Origin of Rigidity and the Nature of the Yielding Transition in Solids |
| 822 | The motion of a particle through a collection of hydrogels: from a liquid to a solid. | Mullin, Tom | We report the results of an experimental investigation of the motion of a solid particle through a collection of hydrogel particles in water. | Session 48: Origin of Rigidity and the Nature of the Yielding Transition in Solids |
| 823 | Quantifying Local Rearrangements in Granular Media Using X-ray Tomography, Diffraction, and Machine Learning | Hurley, Ryan; Zhai, Chongpu; Herbold, Eric; Hall, Stephen | In this talk, we discuss recent experiments combining in-situ X-ray computed tomography (XRCT) and 3D X-ray diffraction (3DXRD) to quantify local rearrangements in deforming 3D granular materials. | Session 49: Packing and Jamming of Granular Materials |
| 824 | Modeling loading and fragmentation in compacted granular systems | Clemmer, Joel; Bolintineanu, Dan; Lechman, Jeremy | We explore the compaction of brittle granular systems using bonded discrete element simulations. | Session 49: Packing and Jamming of Granular Materials |
| 825 | Effect of pins on force distributions in frictionless jammed systems | Parts, Celia; Zhang, Andy; Ridout, Sean; Vollmayr-Lee, Katharina; Utter, Brian; Graves, Amy; Bester, Cacey | By introducing lattices of fixed pins of negligible size into two dimensional bidisperse systems with purely repulsive harmonic interactions, we provide a tuning parameter to systematically modify these properties. | Session 49: Packing and Jamming of Granular Materials |
| 826 | Mean-field predictions of scaling prefactors match low-dimensional jammed packings | Sartor, James; Ridout, Sean; Corwin, Eric | We present measurements of these prefactors in dimensions 2-10 and show that they do closely follow mean field predictions, suggesting a deeper connection. | Session 49: Packing and Jamming of Granular Materials |
| 827 | Energy landscape approach to understanding systems beyond jamming | Thirumalaiswamy, Amruthesh; Riggleman, Robert; Crocker, John | In this study, we use an energy landscape based approach to probe the existence of such inherent structure athermal energies and provide an algorithm to explore the energy landscape The algorithm is inspired by metadynamics, and proceeds as a high dimensional basin filling algorithm that allows us to explore the energy landscape of a model soft-sphere foam system. | Session 49: Packing and Jamming of Granular Materials |
| 828 | Effect of chain stiffness on athermal polymer jamming and phase behaviour | Martinez Fernandez, Daniel; Herranz, Miguel; Foteinopoulou, Katerina; Karayiannis, Nikos; Laso, Manuel | Through Monte Carlo simulations [1], we study the behavior of athermal, linear semiflexible polymers of tangent hard spheres at progressively increased concentrations. | Session 49: Packing and Jamming of Granular Materials |
| 829 | Percolation in metal-insulator composites of disordered jammed spherocylindrical nanoparticles | Pokhrel, Shiva; Waters, Brendon; Huang, ZhiFeng; Nadgorny, Boris | Here we investigate both experimentally and theoretically the electrical percolation in a binary system of disordered jammed spherocylinders. | Session 49: Packing and Jamming of Granular Materials |
| 830 | Characterizing the structure of a compression of hard sphere systems up to jamming | Middlemas, Timothy; Torquato, Salvatore | We study these metastable branches for a broad range of compression rates. | Session 49: Packing and Jamming of Granular Materials |
| 831 | Jamming and percolation of dimers in restricted-valence random sequential adsorption | Furlan, Alexandre; dos Santos, Diogo; Ziff, Robert; Dickman, Ronald | For the simplest case (pure on the square lattice) we prove the absence of percolation for maximum valence V max=2. | Session 49: Packing and Jamming of Granular Materials |
| 832 | Nonlinear acoustic resonance and wave-induced softening in dense granular matter through flow heterogeneities | Lieou, Charles; Laurent, Jerome; Johnson, Paul; Jia, Xiaoping | We report a series of experiments on the softening and compaction of a dense granular pack through traveling acoustic pressure and shear waves. | Session 49: Packing and Jamming of Granular Materials |
| 833 | Vibrational Spectrum of Granular Packings with Random Matrices | Narayan, Onuttom; Mathur, Harsh | We propose that the random lattice model can therefore be applied to understand not only the spectrum but more general properties of bead packs including the spatial structure of modes both at the jamming point and far from it. | Session 49: Packing and Jamming of Granular Materials |
| 834 | Brazil nut effect controlled by vibration velocity | Umehara, Mika; Okumura, Ko | We find that the BN effect under discontinuous vibration is divided into two regimes and the final convection regime is clearly governed by vibration velocity. | Session 49: Packing and Jamming of Granular Materials |
| 835 | Enhanced dimensional accuracy and impact resistance of 3D printed polymers using core-shell filaments containing high density polyethylene | Ai, Jia-Ruey; Vogt, Bryan | Here, we describe how the core selection influences the dimensional accuracy of the printed part using a shell of HDPE (at 50 vol%) and cores of polycarbonate-based polymer with increment of glass transition temperature ( T g). | Session 50: Physics and Chemistry of Polymer 3D Printing |
| 836 | Simulated extrusion of filaments into support baths | Friedrich, Leanne; Seppala, Jonathan | In order to guide material selection for more reliable prints, we use numerical simulations in OpenFOAM to directly probe the effects of viscous dissipation, viscoelasticity, and interfacial energy on the three-dimensional shape and position of the printed filament within the support bath. | Session 50: Physics and Chemistry of Polymer 3D Printing |
| 837 | Simulation of polymer stretch and disentanglement in Fused-Filament Fabrication (FFF) | Dolata, Benjamin; Olmsted, Peter | We compare our results to prior analytical theory with simplified dynamics. | Session 50: Physics and Chemistry of Polymer 3D Printing |
| 838 | 3D Printed Absorber for Capturing Chemotherapy Drugs before they Spread through the Body | Oh, Hee Jeung; Aboian, Mariam; Yi, Michael; Maslyn, Jacqueline; Loo, Whitney; Jiang, Xi; Parkinson, Dilworth; Wilson, Mark; Moore, Terilyn; Yee, Colin; Robbins, Gregory; Barth, Florian; DeSimone, Joseph; Hetts, Steven; Balsara, Nitash | In the context of reducing the toxicity of chemotherapy, we have designed, built, and deployed porous adsorbers for capturing chemotherapy drugs from the blood stream after these drugs have had their effect on a tumor, but before they are released into the body where they can cause hazardous side effects. | Session 50: Physics and Chemistry of Polymer 3D Printing |
| 839 | 4D Printing of Shape Memory Polymers | Cavicchi, Kevin; Peng, Bangan | In this talk we will present approaches to 3D print shape memory polymers through digital light processing (DLP) and fused filament fabrication (FFF). | Session 50: Physics and Chemistry of Polymer 3D Printing |
| 840 | Material physics and metrology of material extrusion additive manufacturing | Seppala, Jonathan | In this talk, I will discuss the state of the art process, structure, and property characterizations, including determination of the melt-front in the “hot-end” using in-situ neutron imaging, in-situ residual stress measurements using thermography and high-speed birefringence, chain orientation from birefringence and polarized Raman spectroscopy, and flow-induced crystallization using autonomous experimentation with micro-focused wide-angle x-ray scattering. | Session 50: Physics and Chemistry of Polymer 3D Printing |
| 841 | Vat Photopolymerization in a Hybrid Atomic Force Microscope: In situ, Nanoscale Characterization of the Printing Process | Higgins, Callie; Brown, Tobin; Killgore, Jason | Here, we describe the instrument and demonstrate one of the three modalities for characterizing voxels during and after printing. | Session 50: Physics and Chemistry of Polymer 3D Printing |
| 842 | Volumetric 3D printing enabled by triplet fusion upconversion nanocapsules | Schloemer, Tracy; Sanders, Samuel; Gangishetty, Mahesh; Anderson, Daniel; Seitz, Michael; Stokes, Christopher; congreve, Daniel | Here, we present an analogous process driven by triplet fusion upconversion (UC). | Session 50: Physics and Chemistry of Polymer 3D Printing |
| 843 | Triplet-triplet annihilation polymerization (TTAP) for high resolution 3D printing | Limberg, David; Kang, Ji-Hwan; Hayward, Ryan | We demonstrate a unique 3D printing mechanism capable of fabricating sub-micron features, and present a model for the system combining established kinetics for TTA and photopolymerization, which provides insight into the mechanism and guides the choice of printing parameters. | Session 50: Physics and Chemistry of Polymer 3D Printing |
| 844 | Depth-Of-Cure Study and Printing Resolution Analysis of Stereolithography 3D Printing Resins | DeNivo, Keith; Smallwood, Anna; Pursel, Alena; Gloria, Patrick; Ryu, Chang | We have studied how the photopolymerization characteristics of SLA photocurable resins affect the 3D printing resolution and mechanical properties. | Session 50: Physics and Chemistry of Polymer 3D Printing |
| 845 | Chemical and Engineering Approaches for Soft Material Additive Manufacturing | Boydston, Andrew | In each example, we aim for complete geometric freedom as one would enjoy from vat photopolymerization or material fusion techniques, yet neither of our approaches use any photochemical or powder bed technologies. | Session 50: Physics and Chemistry of Polymer 3D Printing |
| 846 | Crowding-induced spatial organization of gene expression in cell-sized vesicles | Chauhan, Gaurav; Norred, Elizabeth; Simpson, Michael; Abel, Steven | With a coarse-grained model of DNA plasmids and crowders, we showed that plasmids were uniformly distributed at low levels of crowding but, due to depletion interactions, became strongly adsorbed to confining surfaces at high levels of crowding. | Session 51: Physics in Synthetic Biology |
| 847 | Synthetic biological tuning of metastasis regulator reveals nonmonotonic phenotype response | Wan, Yiming; Cohen, Joseph; Farquhar, Kevin; Nest, Nicholas; smashnov, Alex; Szenk, Mariola; Balazsi, Gabor | Overall, we propose a systematic approach to quantify dose-dependent relationships between TFs and their phenotypic/regulatory functions in mammalian cells, with relevance to cancer, tissue homeostasis and development. | Session 51: Physics in Synthetic Biology |
| 848 | Monitor, categorize and manipulate label-free water-in-oil droplets in microfluidic systems | Neckernuss, Tobias; Frey, Christoph; Pfeil, Jonas; Geiger, Daniel; Platzman, Ilia; Marti, Othmar; Spatz, Joachim | We developed a novel optical device, consisting of a fast camera with integrated data processing for smart and fast algorithms enabling label-free real-time monitoring and active manipulation of passing droplets. | Session 51: Physics in Synthetic Biology |
| 849 | Improved CRISPRi gene circuit function via context-sensitive antisense RNA sequestration | Specht, David; Lambert, Guillaume | By using the binding of the catalytically-dead CRISPR protein dCas12a, we can create programmable gene circuit elements in E. coli. | Session 51: Physics in Synthetic Biology |
| 850 | Emergence of homochirality in large molecular systems | Laurent, Gabin; Lacoste, David; Gaspard, Pierre | In this work, using random matrix theory, we show that large non-equilibrium reaction networks undergo a generic and robust phase transition towards a homochiral state as a consequence of the fact that they contain a large number of chiral species. | Session 51: Physics in Synthetic Biology |
| 851 | Control of Gene Expression through Control of Plasmid Copy Number | Rouches, Miles; Lambert, Guillaume | In this work we demonstrate robust control of plasmid copy number in ColE1 plasmids in several manners – using inducible promoters and massively parallelized assays to investigate the parameters governing plasmid copy number. | Session 51: Physics in Synthetic Biology |
| 852 | Footprints in the noise: understanding gene circuit structure and function using noise spectroscopy | Simpson, Michael | This talk will describe the history of gene expression noise spectroscopy as a means to probe gene regulatory arrangements such as positive and negative autoregulation, including the positive and negative feedback loops in the HIV gene circuit. | Session 51: Physics in Synthetic Biology |
| 853 | Characterization of programmable CRISPR-based toggle switches in Escherichia coli | Xu, Yasu; Lambert, Guillaume | This work aims to provide an efficient and systematic workflow to design, assemble and fine-tune CRISPRi based genetic toggle switches from many potential constructs. | Session 51: Physics in Synthetic Biology |
| 854 | Improving CRISPR gene circuit design using Physics and Synthetic Biology | Lambert, Guillaume; Specht, David; Xu, Yasu | Using a general thermodynamic model of CRISPR-Cas binding dynamics, we unravel the complex energetic landscape of several CRISPR-Cas systems. | Session 51: Physics in Synthetic Biology |
| 855 | Synthetic Biology to Endow Novel Sensing and Reporting Functions in Plants | Stewart, C. Neal | The presentation will focus on gains to produce novel plants to detect and report environmental contaminants. | Session 51: Physics in Synthetic Biology |
| 856 | Materials Physics for Latch-Mediated Spring Actuation (LaMSA) | Crosby, Alfred | Here, we identify underlying principles of LaMSA systems, focusing on physics that define enabling structures-property relationships. | Session 52: Physics of Bio-inspired Materials |
| 857 | Mechanical Response of Bio-Inspired Suture Interface under Dynamic Loading | Nash, Richard; Li, Yaning | In this investigation, we focus on evaluate the influences of the three key design factors of sutures: the suture waviness and geometry, the number of hierarchy, and the introduction of an interphase. | Session 52: Physics of Bio-inspired Materials |
| 858 | Folding of flexible colloidal polymers into colloidal clusters | McMullen, Angus; Brujic, Jasna | Borrowing a concept from biology, here we reduce the dimensionality of the problem by folding 1-D colloidomer chains into compact architectures. | Session 52: Physics of Bio-inspired Materials |
| 859 | Counting the optical cost of disorder in biological photonic systems | Vukusic, Pete | In this presentation, we review biological structurally coloured systems that, in particular, present ordered, quasi-ordered or disordered photonic structures. | Session 52: Physics of Bio-inspired Materials |
| 860 | Biomimetic structural color through arrested phase separation | Sicher, Alba; Menzel, Andreas; Feofilova, Maria; Style, Robert; Rossi, René; Dufresne, Eric | Here, we attempt to scale this process down to the optical scale through polymerization-induced phase separation in a 0.1 GPa-scale network. | Session 52: Physics of Bio-inspired Materials |
| 861 | The role of material architecture to achieve functional hierarchy in the cuticle of the flower beetle, Torynorrhina flammea | Jia, Zian; Fernandes, Matheus; Deng, Zhifei; Yang, Ting; zhang, qiuting; Yin, Jie; Lee, Jae-Hwang; Han, Lin; Weaver, James; Bertoldi, Katia; Aizenberg, Joanna; Kolle, Mathias; Vukusic, Pete; Li, Ling | In this study, we address these challenges based on the cuticle of the flower beetle, Torynorrhina flammea. | Session 52: Physics of Bio-inspired Materials |
| 862 | Continuous, autonomous sub-surface cargo shuttling | Russell, Thomas; Xie, Ganhua; Li, Pei; Gu, Pei-Yang; Helms, Brett; Ashby, Paul; jiang, lei | Inspired by these systems found in nature, we demonstrate autonomous, aqueous-based synthetic systems that overcome the meniscus barrier and shuttle underwater cargo beneath the water surface to and from a landing site and a targeted drop-off site. | Session 52: Physics of Bio-inspired Materials |
| 863 | Hybrid Surface Designs with Passive Anti-Frosting Capabilities | Machado, Christian; Park, Kyoo-Chul (Ken) | Here, we devise an engineered surface to focus a majority of frost formation on millimetric-sized features, inspired by typical leaf structures, while creating a planar region that is thermodynamically preferred to prevent frost. | Session 52: Physics of Bio-inspired Materials |
| 864 | Understanding the multifunctional design of glass skeleton of Euplectella Aspergillum sponge | Chen, Hongshun; Jia, Zian; Li, Ling | With quantitative structural measurements, we construct a biomimetic model to conduct computational study on the mechanics of different cylindrical lattices under different loadings. | Session 52: Physics of Bio-inspired Materials |
| 865 | Bioinspired materials with self-adaptable mechanical properties | Kang, Sung | Inspired by bone mineralization, we report a material system that triggers mineral formation from ionic solutions on scaffolds upon mechanical loadings so that it can self-adapt to mechanical loadings. | Session 52: Physics of Bio-inspired Materials |
| 866 | Growth and roughening of biofilms | Bravo, Pablo; Ng, Siu; Hammer, Brian; Yunker, Peter | Using high-resolution interferometry we study the evolution of surface growth and fluctuations of Vibrio cholerae strains with different rates of EPS production. | Session 53: Physics of Biofilms |
| 867 | Flow-induced symmetry breaking in growing bacterial biofilms | Pearce, Philip; Song, Boya; Skinner, Dominic; Mok, Rachel; Hartmann, Raimo; Singh, Praveen; Jeckel, Hannah; Oishi, Jeff; Drescher, Knut; Dunkel, Jorn | Here, we combine highly time-resolved single-cell live imaging with 3D multi-scale modeling to investigate the mechanisms by which flow affects the dynamics of all individual cells in growing biofilms. | Session 53: Physics of Biofilms |
| 868 | Biomechanical feedback during confined biofilm growth revealed by single-cell resolution imaging | zhang, qiuting; Yan, Jing; Li, Jian; Cohen, Tal; Lu, Haoran; nijjer, japinder | In this presentation, we will integrate single-cell live imaging, finite element modeling, mechanics theories, and mutagenesis to investigate how Vibrio cholerae biofilms grow inside agarose gels. | Session 53: Physics of Biofilms |
| 869 | Physical determinants of bacterial biofilm architecture development | Jeckel, Hannah; Díaz-Pascual, Francisco; Skinner, Dominic; Song, Boya; Jiménez Siebert, Eva; Dunkel, Jorn; Drescher, Knut | In this study we set out to determine which distinct properties of a bacterial species or strains account for the differences between the structure of biofilm microcolonies. | Session 53: Physics of Biofilms |
| 870 | Control of biofilm growth through substrate mechanics | Asp, Merrill; Patteson, Alison | Here, we report the use of synthetic polyacrylamide hydrogels with tunable stiffness and controllable pore size to assess the effects of substrate mechanics on biofilm development. | Session 53: Physics of Biofilms |
| 871 | Growth Characteristics of Pseudomonas Biofilms in Different Types of Gels | Chen, Zilei; Eccles, Mara; Gordon, Vernita | In a current study, we make use of data left from previous researches to observe bacterial attachment to a different kind of gel, the poly(ethylene glycol) diacrylate (PEGDA) hydrogels, to compare to the agar-based gel experiments. | Session 53: Physics of Biofilms |
| 872 | Biofilms deform soft surfaces | Cont, Alice; Rossy, Tamara; Persat, Alexandre | Here, we show that biofilms of the pathogens Vibrio cholerae and Pseudomonas aeruginosa can induce large deformations of soft synthetic hydrogels. | Session 53: Physics of Biofilms |
| 873 | Interfacial Dynamics in Bacterial Growth Patterns | McCalla, Scott; von Brecht, James; Wilking, James | In this talk we will discuss nonlocal pattern forming mechanisms in the context of bacterial colony formation with an emphasis on arrested fronts. | Session 53: Physics of Biofilms |
| 874 | Role of physical interactions in early stages of biofilm formations | Pokhrel, Aawaz; Yunker, Peter | Here we develop a three dimensional agent based model of biofilm formation to investigate the role of physical and biological interactions in biofilm formation. | Session 53: Physics of Biofilms |
| 875 | Revealing biomechanical feedback during biofilm growth with single-cell resolution imaging and modeling | Yan, Jing | In this talk, I will discuss about our recent progress in single-cell imaging and characterization tools to study the morphological evolution of biofilms grown under confinement in the model organism Vibrio cholerae, the agent causing the cholera pandemic. | Session 53: Physics of Biofilms |
| 876 | To Biofilm or Not To Biofilm: A Competition Between Accumulation and Dispersal | Ott, Jenna; Amchin, Daniel; Chiu, Selena; Bhattacharjee, Tapomoy; Datta, Sujit | In some cases, biofilms serve a positive purpose, such as improving health or remediating polluted water; in other cases, they negatively impact our lives, such as by causing infection or fouling equipment. | Session 53: Physics of Biofilms |
| 877 | Watching Gut Microbes Swim, Stick, and Survive | Parthasarathy, Raghuveer | I will describe this approach and experiments that have revealed how bacteria can manipulate intestinal mechanics, how antibiotics can cause collapses in gut populations by altering bacterial community morphology, and how the host immune system might sense bacterial activity. | Session 53: Physics of Biofilms |
| 878 | Emergent robustness of bacterial quorum sensing in fluid flow | Pearce, Philip; Dalwadi, Mohit | Here, we develop and apply a general theory that identifies the conditions required for QS activation in fluid flow by linking cell- and population-level genetic and physical processes. | Session 53: Physics of Biofilms |
| 879 | Simulating biofilm initiation and growth in porous media flow | Lohrmann, Christoph; Lee, Miru; Holm, Christian | We present a bacterial model based on coupling single cells to a surrounding flow. | Session 53: Physics of Biofilms |
| 880 | Experimental Method Development and Analysis of Pseudomonas aeruginosa Surface Attachment | Eccles, Mara; Chen, Zilei; Gordon, Vernita | This study analyzes growth patterns and collection methods to recommend methods for measuring attachment and surface conditions to minimize bacterial growth. | Session 53: Physics of Biofilms |
| 881 | Positive feedback between type IV pili activity and mechanosensation commits P. aeruginosa to surface associated behaviors | Talà, Lorenzo; Kühn, Marco; Negrete, Jose; Pierrat, Xavier; Vos, Iscia; Al-Mayyah, Zainebe; Inclan, Yuki; Patino, Ramiro; Engel, Joanne; Persat, Alexandre | Here we show that Chp activation by TFP provides a positive feedback on its activity. | Session 53: Physics of Biofilms |
| 882 | Phage-bacteria dynamics in spatially structured bacterial communities | Selvakumar, Hemaa; Dominguez-Mirazo, Marian; Thomas, Jacob; Diggle, Stephen; Weitz, Joshua; Curtis, Jennifer | In this study, we investigate the density-dependent dynamics arising from interactions between P. aeruginosa and phage. | Session 53: Physics of Biofilms |
| 883 | Diversity loss as a function of colony morphology | Golden, Alexander; Korolev, Kirill | We study a stochastic model for microbial colony morphology that includes nutrient dynamics and a growth instability, and observe how different colony morphologies affect genetic drift. | Session 53: Physics of Biofilms |
| 884 | Bacterial mechanosensing of substrate stiffness during biofilm initiation: a tale of two steps (and two sensors) | Wang, Liyun; Wong, Yu-Chern (” chad”);=”” blacutt,=”” jacob;=”” gordon,=”” vernita”=” | We use ultrathin and thick hydrogels coated on glass coverslips to create stiff and soft composite materials, respectively, with the same surface chemistry. | Session 53: Physics of Biofilms |
| 885 | Making biofilms easier to eat: a story of blood, bacteria, and bulk mechanics | Wells, Marilyn; Gordon, Vernita | Understanding how the production of particular polymers contributes to the bulk mechanics of a biofilm could lead to developing new methods of compromising the matrix structure and rendering the biofilm more susceptible to antibiotic treatment and/or clearance by the immune system. | Session 53: Physics of Biofilms |
| 886 | Drug effects on Enterococcus faecalis biofilms: growth, topology, and population dynamics | Guardiola Flores, Keanu; Wood, Kevin | In this talk, I will discuss our ongoing work to understand how antibiotics shape, and are reshaped by, the spatial architecture of bacterial biofilms at the single-cell level. | Session 53: Physics of Biofilms |
| 887 | Can bacteria in a biofilm sense and respond to mechanical inputs? | Niese, Brandon; Gordon, Vernita | Recent work, from our group and others, has shown that bacteria can sense and respond to mechanical cues when they are in the single-cell state. | Session 53: Physics of Biofilms |
| 888 | Self-organization of bacteria in confined interstitial biofilms | Nijjer, Japinder; Li, Changhao; Zhang, Sulin; Yan, Jing | Using Vibrio Cholerae as a model biofilm former, we examine the growth of biofilms confined at the interface of a glass and gel surface. | Session 53: Physics of Biofilms |
| 889 | A low dose of cell-wall targeting antibiotic can promote aggregation of Escherichia coli bacteria | Tavaddod, Sharareh; Dawson, Angela; Allen, Rosalind | To study how low-dose antibiotic can promote aggregation and biofilm formation, we developed an experimental assay where E. coli bacteria form aggregates in a shaken suspension upon exposure to a low dose of cell-wall targeting antibiotic. | Session 53: Physics of Biofilms |
| 890 | Mechanical behavior of a migrating cell monolayer. | Delanoe-Ayari, Helene | We observe spontaneous velocity waves, or induce a heterogeneous cell flow around an obstacle to observe cell shape changes and neighbor rearrangements. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 891 | Rigidity sensing regulates epithelial monolayer integrity | LIN, Shaozhen; Sonam, Surabhi; Balasubramaniam, Lakshmi; Prost, Jacques; Rupprecht, Jean-François; Mège, René-Marc; Ladoux, Benoît | To decipher the physical mechanism of hole opening both at the cell and tissue levels, we design a cell-based computational framework (called vertex model) whereby we evaluate two possible models where holes may either form along junctions experiencing high tensile normal stresses (model 1) or along junctions of fast shear strain (model 2). | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 892 | Clustering and ordering in cell assemblies with generic asymmetric aligning interactions | Bertrand, Thibault; d’Alessandro, Joseph; Maitra, Ananyo; Mège, René-Marc; Ladoux, Benoît; Voituriez, Raphaël | We build the corresponding active hydrodynamic theory and show that such asymmetric aligning interaction generically destroys large scale clustering and ordering. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 893 | Boundary conditions determine emergence and dynamics of density patterns in microbial suspensions | Drewes, Nicole; Fragkopoulos, Alexandros; Baeumchen, Oliver | We showed that dense suspensions of motile Chlamydomonas reinhardtii cells aggregate in 2D confinement in response to a reduction of the light intensity. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 894 | Deciphering how forces pull the nucleus during confined cell motility. | Davidson, Patricia; Amiri, Sirine; Sykes, Cécile | We thus reveal one gear of the “mechanostransduction” chain between the cytoskeleton and the nucleoskeleton. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 895 | Collective migration of cells in confinement – contact following and contact inhibition of locomotion | Zadeh, Pedrom; Camley, Brian | We build a model for CIL and CFL within the phase-field approach, which treats cells as continuously deformable objects. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 896 | Collective chemotaxis in a vertex model for confluent clusters | Lawson-Keister, Elizabeth; Manning, M Lisa | Therefore, we construct a 2D Voronoi model for a confluent tissue that incorporates feedback between individual cell properties and a biochemical signaling gradient. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 897 | A Mechano-chemical cell cycle for growing cell colonies | Li, Jintao; Schnyder, Simon; Turner, Matthew; Yamamoto, Ryoichi | We develop a simplified model of the cell cycle, the fundamental regulatory network controlling growth and division, and couple this to physical stress. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 898 | Fluctuations can induce local nematic order and extensile stress in motile cell monolayers | Vafa, Farzan; Bowick, Mark; Shraiman, Boris; Marchetti, M. Cristina | Our work shows that activity can drive either extensile or contractile stresses in tissue, depending on the relative strength of the contractility of the cortical cytoskeleton and tractions by cells on the extracellular matrix. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 899 | Hydrodynamic self-assembly of living chiral crystals | Higinbotham, Hugh; Han, Tzer; Mietke, Alexander; Chen, Yuchao; Foster, Peter; Gokhale, Shreyas; Dunkel, Jorn; Fakhri, Nikta | Here, we report on the formation of chiral crystals of starfish embryos which undergo autonomous order-disorder transitions. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 900 | Active wrinkling in viscoelastic thin sheets | Sknepnek, Rastko; Matoz Fernandez, Daniel; Stanley-Wall, Nicola; Davidson, Fordyce | In this talk, we will show that a viscoelastic thin sheet driven out of equilibrium by active structural remodeling (e.g., fast growth) develops a wide variety of shapes as a result of a competition between viscous relaxation and activity. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 901 | Unravelling the photoreceptor underlying light-switchable adhesion of Chlamydomonas by micropipette force measurements | Girot, Antoine; Catalan, Rodrigo; Vargas, Luiza; Kelterborn, Simon; Hegemann, Peter; Baeumchen, Oliver | In this presentation, we focus on the adhesion of the biflagellated unicellular model organism Chlamydomonas reinhardtii. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 902 | Motility-induced buckling and glassy dynamics regulate 3D transitions in bacterial colonies | Takatori, Sho; Mandadapu, Kranthi | In this talk, we explore the mechanisms behind the 2D-to-3D transition of motile Pseudomonas aeruginosa colonies. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 903 | Intrinsic Rhythms in a Giant Single-Celled Organism and the Interplay with Time-Dependent Drive, Explored via Self-Organized Macroscopic Waves | Afik, Eldad; Liu, Tony; Meyerowitz, Elliot | We explore the system under non-circadian periods, its relaxation times — analogous to jet lag recovery, and the limits at which the system no longer follows the period of the external drive. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 904 | Nonequilibrium polarity-induced chemotaxis: emergent Galilean symmetry and exact scaling exponents | Mahdisoltani, Saeed; Ben Alì Zinati, Riccardo; Duclut, Charlie; Gambassi, Andrea; Golestanian, Ramin | Here we propose a novel mechanism for such interactions, in the context of chemotaxis, which originates from the polarity of the particles and generalizes the well-known Keller-Segel interaction term. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 905 | The role of eDNA in the formation of biofilm streamers | Savorana, Giovanni; Vitale, Alessandra; Eberl, Leo; Stocker, Roman; Rusconi, Roberto; Secchi, Eleonora | Here, we show that a laminar flow of a diluted suspension of Pseudomonas aeruginosa PA14 around a pillar can trigger the formation of suspended filamentous biofilm structures known as streamers and that extracellular DNA (eDNA) plays a fundamental structural role in streamer formation. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 906 | Genome-scale simulations of Escherichia coli colony morphologies and genetic demixing | Dukovski, Ilija; Golden, Alexander; Segrè, Daniel; Korolev, Kirill | Here, we study how environmental factors and metabolic strategies affect morphology and genetic diversity via simulations in COMETS (Computation Of Microbial Ecosystems in Time and Space). | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 907 | Tubulation and dispersion of oil by growth of marine bacteria on oil droplets | Hickl, Vincent; Juarez, Gabriel | Here, we describe experimental observations on the emergence of tubular structures arising from the growth of rod-shaped bacteria at the interface of oil droplets in water. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 908 | Chemotactic smoothing of bacterial populations | Bhattacharjee, Tapomoy; Amchin, Daniel; Alert, Ricard; Ott, Jenna; Datta, Sujit | Here, we describe a previously undocumented mechanism by which bacterial populations regulate their morphology: via self-generated chemotaxis, biased motion in response to a self-generated nutrient gradient. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 909 | Light-regulated cell aggregation in confinement | Fragkopoulos, Alexandros; Vachier, Jeremy; Zwicker, David; Wilczek, Michael; Mazza, Marco; Baeumchen, Oliver | We demonstrate that under confinement this adaptation in a suspension of soil-dwelling Chlamydomonas reinhardtii cells leads to a spontaneous separation into regions of high and low cell densities. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 910 | Density phase transition of spatially confined bacteria | Karita, Yuya; Hallatschek, Oskar | In this study, we culture fly-gut-derived Acetobacter indonesiensis cells in microfluidics, and find three distinct density states sharply depending on the chamber depth. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 911 | Trail following in bacteria | Copenhagen, Katherine; Shaevitz, Joshua | We study the motion of individual M. xanthus cells as they create and follow along trails. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 912 | Growth and characteristic layering of Myxococcus xanthus active nematic droplets | Yang, Cassidy; Shaevitz, Joshua | We find that these aggregates break symmetry and are often elongated in shape with distinctively non-uniform contact angles. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 913 | Bacteria growth and self-organization at liquid interfaces can buckle and deform oil droplets | Juarez, Gabriel | Here we present experimental work where we use microfluidics and time-lapse microscopy to examine the growth of rod-shaped bacteria on stationary oil droplets with maximum diameters ranging from 10 to 200 micrometers. | Session 54: Physics of Biological Active Matter: Cell Colonies |
| 914 | From topological defects to fruiting bodies in bacterial colonies | Alert, Ricard | In this talk, I will show that, in each layer, the rod-shaped M. xanthus cells are densely packed, aligned with neighboring cells, and motile. | Session 55: Physics of Biological Active Matter: Liquids and Model Systems |
| 915 | Dynamic coacervation of a DNA Liquid | Abraham, Gabrielle; Chaderjian, Aria; Nguyen, Dan; Saleh, Omar | We aim to mimic this dynamic, self-regulating system using a model DNA liquid system that is transformed by RNA produced from in vitro transcription. | Session 55: Physics of Biological Active Matter: Liquids and Model Systems |
| 916 | A theoretical framework for active chiral filaments | Plochocka, Aleksandra; Fuerthauer, Sebastian; Shelley, Michael | Here, we develop a framework for coarse graining chiral filament-filament interactions to obtain an active gel theory for living chiral materials. | Session 55: Physics of Biological Active Matter: Liquids and Model Systems |
| 917 | Controlling membrane-less organelles via chemical reactions | Kirschbaum, Jan; Zwicker, David | We investigate how fuel-driven chemical reactions influence the properties of those organelles when the droplet material can switch between a phase separating and a soluble form. | Session 55: Physics of Biological Active Matter: Liquids and Model Systems |
| 918 | A data-driven statistical field theory of active matter | Borzou, Ahmad; Schwarz, J. M. | To begin to illuminate the underlying principles, I will present a data-driven statistical field theory for active matter—a leading candidate for quantifying living systems. | Session 55: Physics of Biological Active Matter: Liquids and Model Systems |
| 919 | Kinetics of light-switchable surface association of C. reinhardtii populations | Catalan, Rodrigo; Fragkopoulos, Alexandros; Kelterborn, Simon; Hegemann, Peter; Baeumchen, Oliver | We observe that both processes exhibit a lag response relative to the time at which blue- or red-light conditions are set and we model this feature using time-delayed Langmuir kinetics. | Session 55: Physics of Biological Active Matter: Liquids and Model Systems |
| 920 | Comparison of different approaches to single-molecule imaging of enhanced enzyme diffusion | Xu, Mengqi; Rogers, W. Benjamin; Ahmed, Wylie; Ross, Jennifer | Using this newly-designed lipid-coated/glycerol chamber, we compare two different analysis approaches for SPT: the mean-squared displacement (MSD) analysis and the jump-length analysis. | Session 55: Physics of Biological Active Matter: Liquids and Model Systems |
| 921 | Layered Liquids: A complex tensor theory of simple smectics | Paget, Jack; Shendruk, Tyler | In this work, we take inspiration from the nematic tensor order parameter and derive a novel mathematical description for confined smectic liquid crystals, characterised by a smectic complex tensor order parameter, E. | Session 55: Physics of Biological Active Matter: Liquids and Model Systems |
| 922 | Active carpets drive non-equilibrium transport and feature self-cleaning properties | Guzman-Lastra, Francisca; Löwen, Hartmut; Mathijssen, Arnold | Here, we derive the enhanced diffusivity as a function of distance from an active carpet and, following Schnitzer’s telegraph model, we cast these results into generalised Fick’s laws. | Session 55: Physics of Biological Active Matter: Liquids and Model Systems |
| 923 | Role of Active Trafficking Dynamics on the Shape and Morphogenesis of Subcellular Compartments | Rautu, Alex; Rao, Madan | We develop a general theory which allows us to study the dynamical interplay of such active processes of fusion and fission with the membrane morphology as well as the hydrodynamics of the ambient fluid. | Session 55: Physics of Biological Active Matter: Liquids and Model Systems |
| 924 | Dynamic Mode Structure of Bacterial Turbulence | Martin, Olivia; Henshaw, Richard; Guasto, Jeffrey | Here, we extend the use of modal decomposition to study the dynamical flow structure of this model active matter system. | Session 55: Physics of Biological Active Matter: Liquids and Model Systems |
| 925 | Stochastic Spatial Modeling of Attachment and Detachment Processes in Molecular Motor-Cargo Systems | Kramer, Peter; Choudhary, Abhishek; Huang, Yushen | We describe an analytical framework to characterize motor attachment or reattachment times to microtubules in a parallel architecture as a function of the physical and geometric properties of the motor, the cargo to which it is attached, and possibly a second motor attached to the same cargo and a microtubule. | Session 55: Physics of Biological Active Matter: Liquids and Model Systems |
| 926 | Photoisomerization-induced wrinkling and leakage in azobenzene-based photoswitchable solid lipid bilayer membranes | Manafirad, Arash; Oville, Christopher; Dinsmore, Anthony | Over a broad range of, we found phase separation into solid DPPC domains and azo-PC enriched domains. | Session 55: Physics of Biological Active Matter: Liquids and Model Systems |
| 927 | Tension-dependent Myosin Dynamics on Contractile Actomyosin Structures | Chou, Wen-hung; Kovar, David; Gardel, Margaret | In this work, we assess myosin turnover dynamics on stress fibers with fluorescence recovery after photobleaching (FRAP) experiments. | Session 56: Physics of Cytoskeleton Across Scales |
| 928 | Investigating AGT-DNA covalent and non-covalent interactions in methyl-induced DNA damage repair | Koirala, Rajendra; Pokhrel, Rudramani; Baral, Prabin; Tiwari, Purushottam; Chapagain, Prem; Adhikari, Narayan | Our analysis shows that residues THR95, TYR114, and SER151 in AGT consistently form hydrogen bonding with THY9, THY23, and methylated GUA7 (or repaired GUA7) in DNA suggesting the importance of these residues/nucleotides in the AGT-DNA complex formation. | Session 56: Physics of Cytoskeleton Across Scales |
| 929 | Force and Power Generation by Contractile Actomyosin Gels | Flommersfeld, Johannes; Brückner, David; Jia, Haiyang; Schwille, Petra; Broedersz, Chase | Here, we introduce a novel experimental system which couples reconstituted actomyosin networks to 3D-printed elastic scaffolds, enabling a dynamic quantification of the generated forces. | Session 56: Physics of Cytoskeleton Across Scales |
| 930 | Dissecting cytoquakes in the actomyosin cortex using super-resolved micropost arrays | Sivarajan, Shankar; Shi, Yu; Xiang, Katherine; Crocker, John; Reich, Daniel | We present detailed analysis of the dynamics and size distributions of these cortical "cytoquake" phenomena, via subnanometer particle tracking with poly(dimethylsiloxane) micropost array detectors. | Session 56: Physics of Cytoskeleton Across Scales |
| 931 | Elasticity from entanglements in branched actin | Lenz, Martin; Bouzid, Mehdi; Valencia Gallardo, Cesar; Foffi, Giuseppe; Heuvingh, Julien; du Roure, Olivia | To understand the microscopic underpinnings of their response, we show using high-sensitivity micromanipulation experiments, numerical simulations and theory that unlike usual crosslinked networks, branched actin is dominated by the proliferation of interfilament contacts under compression. | Session 56: Physics of Cytoskeleton Across Scales |
| 932 | Discrete mechanical model of lamellipodial actin networks | Rutkowski, David; Vavylonis, Dimitrios | We developed a filament-level computational model of an actin network undergoing retrograde flow simulated via 3d Brownian dynamics. | Session 56: Physics of Cytoskeleton Across Scales |
| 933 | Exploring the impact of Arp2/3 concentration on actomyosin dynamics | Li, Chengxuan; Liman, James; Eliaz, Yossi; Cheung, Margaret | We have implemented graph theory to quantify the higher-order organization inside actomyosin networks, powerful to visualize the hierarchy of the complex networks as well as to extract unprecedented insights on the dynamics of actomyosin networks that can be validated experimentally. | Session 56: Physics of Cytoskeleton Across Scales |
| 934 | Regulation of actin turnover by myosin activity and network architecture | Scheff, Danielle; Gardel, Margaret | Here, we investigate the ability of myosin activity and actin architecture to control turnover. | Session 56: Physics of Cytoskeleton Across Scales |
| 935 | Dynamic actin waves in primary rat cortical astrocytes sense environmental cues | O’Neill, Kate; Saracino, Emanuela; Barile, Barbara; Mennona, Nicholas; Pathak, Spandan; Mola, Maria Grazia; Nicchia, Grazia Paola; Benfenati, Valentina; Losert, Wolfgang | We propose that actin dynamics are a local manifestation of astrocytes’ global homeostatic response to changes in the extracellular microenvironment. | Session 56: Physics of Cytoskeleton Across Scales |
| 936 | Model of dendritic actin network with distributed turnover and structural remodeling | Holz, Danielle; Hall, Aaron; Vavylonis, Dimitrios | We thus propose a unified mechanism that fits a diverse set of basic lamellipodia phenomenology. | Session 56: Physics of Cytoskeleton Across Scales |
| 937 | The dual role of calcium/calmodulin-dependent kinase II in transducing calcium signals and reorganizing actomyosin networks | Cheung, Margaret | The observation made by a team of collaborators using an integrated approach of experiments, theory, and computation provides a simple mechanism by which the structural dynamics of CaMKII establishes a link between calcium signaling and the morphological plasticity of dendritic spines. | Session 56: Physics of Cytoskeleton Across Scales |
| 938 | Quantifying mechano-chemical coupling between RhoA and the actomyosin cortex in vivo | Tekant, Melis; Choi, Gary; Hastewell, Alasdair; Bacanu, Alexandru; Dunkel, Jorn; Fakhri, Nikta | This method provides a novel approach to probe the local coupling between biochemistry and mechanics. | Session 56: Physics of Cytoskeleton Across Scales |
| 939 | Reconstituting an active cytoskeleton in a droplet | Zhao, Jianguo; Duclut, Charlie; Golipour, Rahil; Pham, An; Golshaei, Behzad; Guan, Chonglin; Harden, James; Jülicher, Frank; Schmidt, Christoph | We constructed a hydrodynamic model of a contracting network with turn-over that can explain the measured actin velocity and density profiles and the resulting stress field, that we probe by local UV laser cutting and magnetic beads. | Session 56: Physics of Cytoskeleton Across Scales |
| 940 | Spatial optimization of transport and capture processes in extended cellular regions | Mogre, Saurabh; Koslover, Elena | We model this diffusive capture process and show that a dispersed microtubule tip arrangement can minimize capture time. | Session 56: Physics of Cytoskeleton Across Scales |
| 941 | Surface fluidity of membrane-bound cargoes enhance their ability to navigate roadblocks | Sarpangala, Niranjan; Gopinathan, Ajay | To explore the mechanisms available for cargoes to get past such roadblocks, we developed a Brownian dynamics simulation of membrane-bound cargo transport by teams of kinesin motors along microtubules that are populated with different kinds of roadblocks. | Session 56: Physics of Cytoskeleton Across Scales |
| 942 | Rare convulsive movements observed in simulations of motorized actin networks with the Arp2/3 complex | Liman, James; Bueno, Carlos; Eliaz, Yossi; Waxham, Neal; Wolynes, Peter; Levine, Herbert; Cheung, Margaret | In this work, we simulate the reorganizations of motorized actin networks with and without the actin-related protein 2/3 (Arp2/3) complex. | Session 56: Physics of Cytoskeleton Across Scales |
| 943 | Modulation of Kinesin’s Load-Bearing Capacity by Force Geometry and the Microtubule Track | Pyrpassopoulos, Serapion; Shuman, Henry; Ostap, Michael | In this study, we found that the effect of opposing forces on the kinesin-microtubule attachment duration depends strongly on experimental assay geometry. | Session 56: Physics of Cytoskeleton Across Scales |
| 944 | Effect of Cargo-Motor Dissociation on transport properties of molecular motor ensemble: A Semi-Analytical Approach | Shrivastava, Rachit; Rai, Ashim; Salapaka, Murti; Sivaramakrishnan, Sivaraj | We hypothesize that the cargo-motor dissociation rate significantly impacts cargo transport by ensembles of molecular motor. | Session 56: Physics of Cytoskeleton Across Scales |
| 945 | Tuning cargo run length via fractional change in kinesin number | Wilson, John; Zaragoza, Arturo; Xu, Jing | Toward this goal, here we employed Monte Carlo simulations to examine the run length of cargos carried by 1-2 motors. | Session 56: Physics of Cytoskeleton Across Scales |
| 946 | Modeling mechanical-force transmission and interactions of myosin motors in the disordered cytoskeleton network | Kumar, Abhinav; Quint, David; Dasbiswas, Kinjal | In future, we will extend our model to describe the force-dependent remodeling dynamics of the actomyosin structures of the cytoskeleton. | Session 56: Physics of Cytoskeleton Across Scales |
| 947 | FRAGMENTATION OF LIPOSOMES BY HYDROPHOBICALLY-MODIFIED POLYPEPTOIDS: ELUCIDATING THE ROLE OF MOLECULAR CHARACTERISTICS | Yu, Tianyi; Omarova, Marzhana; John, Vijay; Zhang, Donghui | In this work, hydrophobically modified polypeptoids (HMPs) have been designed and investigated as facially amphiphiles to fragment liposome to form stable HMP-lipid complexes or nanodiscs. | Session 56: Physics of Cytoskeleton Across Scales |
| 948 | Cholesterol in cargo membrane amplifies inhibitory effect of MAP tau on kinesin-1 | Xu, Jing; Li, Qiaochu; Wilson, John; Ferrare, James; Qiu, Weihong; Vershinin, Michael; King, Stephen; Neuman, Keir; Silver, Jonathan | Here we combine advances in membrane biophysics with established single-molecule optical-trapping assays to characterize the transport of membrane-enclosed cargos in vitro. | Session 56: Physics of Cytoskeleton Across Scales |
| 949 | Intracellular Transport on Dynamic Actin Networks | Ali, Imtiaz; Gopinathan, Ajay | We use a stochastic simulation model that accounts for both active transport along filaments as well as passive diffusion and incorporates the dynamics of the explicitly represented actin network. | Session 56: Physics of Cytoskeleton Across Scales |
| 950 | Motor guidance by long-range communication through the microtubule highway | Wijeratne, Sithara; Fiorenza, Shane; Subramanian, Radhika; Betterton, Meredith | Here we report that microtubules can physically couple motor movement in the absence of short-range interactions. | Session 56: Physics of Cytoskeleton Across Scales |
| 951 | Actin and microtubule crosslinkers roles in mobility and co-localization of filaments in a composite cytoskeletal network | Farhadi, Leila; Rust, Michael; Das, Moumita; Robertson-Anderson, Rae; Ross, Jennifer | Here, we use fluorescent microscopy, fluctuations, and correlation analysis to explore the effect of the actin and microtubule crosslinkers in the cytoskeletal composite network. | Session 56: Physics of Cytoskeleton Across Scales |
| 952 | Polymorphism of tubulin assemblies | Garcia-Aguilar, Ireth; Zwaan, Steven; Giomi, Luca | By modelling tubulin aggregates as continuous elastic materials, we investigate how spontaneous curvature and anisotropic elastic properties influence the resulting equilibrium shape. | Session 56: Physics of Cytoskeleton Across Scales |
| 953 | Optical Tweezers Microrheology of Active Co-entangled Actin-Microtubule Networks | Sheung, Janet; Achiriloaie, Daisy; Lee, Gloria; Peddireddy, Karthik; Robertson-Anderson, Rae | To address this gap, we perform nonlinear optical tweezers microrheology measurements on active actin-microtubule networks driven by the molecular motor myosin II. | Session 56: Physics of Cytoskeleton Across Scales |
| 954 | Tuning Dynamics of Myosin-Driven Actin-Microtubule Networks | Lee, Gloria; leech, gregor; Currie, Christopher; Rust, Michael; Das, Moumita; Ross, Jennifer; McGorty, Ryan; Robertson-Anderson, Rae | Here, we create active composite networks of actin and microtubules that exhibit contractile dynamics driven by myosin II. | Session 56: Physics of Cytoskeleton Across Scales |
| 955 | Microtubule motor protein dynein mediates the collapse of the mitotic spindle following ablation in fission yeast S. pombe | Zareiesfandabadi, Parsa; Elting, Mary | In this work, we find that previously hypothesized viscoelastic relaxation of the nucleus cannot fully explain spindle shortening in response to laser ablation. | Session 56: Physics of Cytoskeleton Across Scales |
| 956 | Principles of spindle size regulation and scaling | Farhadifar, Reza; Yu, Che-Hang; Fabig, Gunar; Wu, Hai-Yin; Stein, David; Müller-Reichert, Thomas; Needleman, Daniel; Shelley, Michael | We used a combination of quantitative microscopy and biophysical perturbations to establish the importance of a balance of cortical pulling forces in the regulation of spindle length and dynamics. | Session 56: Physics of Cytoskeleton Across Scales |
| 957 | A Strong Non-equilibrium Bound for Sorting of Crosslinkers on Growing Biopolymers | Qiu, Yuqing; Nguyen, Michael; Freedman, Simon; Hocky, Glen; Dinner, Aaron; Vaikuntanathan, Suriyanarayanan | Here we use the framework of stochastic thermodynamics to investigate how the actin polymerization rates tune the sorting of actin binding proteins(ABPs) in a growing actin bundle. | Session 56: Physics of Cytoskeleton Across Scales |
| 958 | Breaking down microtubule severing motors: A computational study of lower order katanin oligomers | Macke, Amanda; Varikoti, Rohith Anand; Dima, Ruxandra | We use the combination of structural, kinetic, and Machine Learning approaches to shed light on the stability of lower order oligomers, and the influence of the nucleotide and the substrate on the networks of interactions responsible for the dynamic stability of oligomers. | Session 56: Physics of Cytoskeleton Across Scales |
| 959 | Vimentin Intermediate Filaments Stabilize Dynamic Microtubules by Direct Interactions | Lorenz, Charlotta; Schaedel, Laura; Schepers, Anna; Klumpp, Stefan; Köster, Sarah | Here, we study the interaction between vimentin IFs and MTs in a minimal in vitro system and show that MTs are stabilized against depolymerization by the IFs. | Session 56: Physics of Cytoskeleton Across Scales |
| 960 | Centering of kinetochores is promoted by length-dependent pulling forces exerted by bridging microtubules | Bosilj, Agneza; Tolić, Iva; Pavin, Nenad | In conclusion, we propose that antiparallel overlaps exert length-dependent forces on kinetochores to navigate their positioning in the center of the metaphase plate. | Session 56: Physics of Cytoskeleton Across Scales |
| 961 | Relating energy dissipation to effective interactions and structure formation in the cytoskeleton | Lamtyugina, Alexandra; Qiu, Yuqing; Vaikuntanathan, Suriyanarayanan | Here we aim to find the metrics that govern the formation and stability of structures in the cytoskeleton. | Session 56: Physics of Cytoskeleton Across Scales |
| 962 | Experimental Measurement of Three-Body Interactions of Lipid Membrane-Deforming Colloidal Spheres | Azadbakht, Ali; Doherty, Rachel; Kraft, Daniela | Here, we use this setup to investigate the many-body interactions that arise from three membrane-deforming spheres on a GUV. | Session 56: Physics of Cytoskeleton Across Scales |
| 963 | Actomyosin-driven mechanics of starfish oocytes | Foster, Peter; Fakhri, Nikta | As a step towards addressing this, we here consider the actomyosin-driven surface contraction wave of meiotic starfish oocytes. | Session 56: Physics of Cytoskeleton Across Scales |
| 964 | Toward a microscopic understanding of the dynamics of simple glass-forming liquids | Charbonneau, Patrick | In this talk, I present our recent advances toward a microscopic understanding of the finite-dimensional echo of these infinite-dimensional features, and of some of the activated processes that affect the dynamical slowdown of simple yet realistic glass formers. | Session 57: Physics of Liquids |
| 965 | Potential Energy Landscape Formalism for Quantum Liquids | Giovambattista, Nicolas; Lopez, Gustavo | As an example, we apply the PEL approach to study a family of quantum monatomic liquids using path-integral Monte Carlo simulations. | Session 57: Physics of Liquids |
| 966 | Role of hydrogen bonded associates on the nanoscale dynamics of liquid and supercooled 2-propanol | Zhai, Yanqin; Luo, Peng; Zhang, Yang | We investigated 2-propanol by static and quasielastic neutron scattering experiments supported by molecular dynamics simulations on a series of partially and fully deuterated samples at temperatures ranging from the liquid, the deeply supercooled, to the glassy state. | Session 57: Physics of Liquids |
| 967 | Local self-motion of water through the Van Hove function | Shinohara, Yuya; Dmowski, Wojciech; Iwashita, Takuya; Ishikawa, Daisuke; Baron, Alfred; Egami, Takeshi | We report that the self-part of the Van Hove functions of water can be determined through inelastic X-ray scattering (IXS) experiments at high-Q. | Session 57: Physics of Liquids |
| 968 | Bulk and interfacial thermodynamics and dynamics of ionic liquids-oil mixtures: A molecular dynamics simulation study | Lazarenko, Daria; Khabaz, Fardin | In this work, all-atom MD simulations will be used to predict morphology, rheology, and interfacial thermodynamics of imidazolium-based ILs in oil. | Session 57: Physics of Liquids |
| 969 | Real-space Dynamics in Liquid Gallium using Inelastic Neutron Scattering | Sarathchandran, Yadu Krishnan; Shinohara, Yuya; Dmowski, Wojciech; Abernathy, Douglas; Egami, Takeshi | In this work, we demonstrate the anomalous nature of the correlated atomic dynamics of liquid gallium in real-space and time using the Van Hove function, G(r,t). | Session 57: Physics of Liquids |
| 970 | Experimental evidence of predicted dynamics-structure-thermodynamic correlation in glass-forming liquids | Mei, Baicheng; Zhou, Yuxing; Schweizer, Kenneth | We have re-visited this theory for monodisperse hard sphere metastable fluids using the modified-Verlet closure integral equation theory as structural input. | Session 57: Physics of Liquids |
| 971 | Towards a new paradigm for liquids dynamics (and thermodynamics) | baggioli, matteo; Zaccone, Alessio | By combining an analytic continuation of the Plemelj identity to the complex plane with the purely overdamped dispersion relation of the INMs, we amend this situation and we derive a closed-form analytic expression for the low-frequency DOS of liquids. | Session 57: Physics of Liquids |
| 972 | Ascent dynamics: an efficient algorithm probing long timescale dynamics | Li, Zhixia; Zhang, Yang | Here, we present a new accelerated simulation method, ascent dynamics, which allows the system to escape deep energy minima through crossing saddle points with given index explicitly at finite temperatures. | Session 57: Physics of Liquids |
| 973 | Two Liquids in One: Liquid-Liquid Transition in Ionic Liquids | Harris, Matthew; Kinsey, Thomas; Wagle, Durgesh; Baker, Gary; Sangoro, Joshua | In this study, a homologous series of ionic liquids with various anions has been investigated using X-ray scattering techniques, broadband dielectric spectroscopy, Raman spectroscopy, and differential scanning calorimetry to characterize the nature of the liquid-liquid transition and identify molecular parameters that influence the phase behavior in these materials. | Session 57: Physics of Liquids |
| 974 | Isothermal Crystallization Monitoring and Time-Temperature-Transformation of Amorphous GDC-0276 and nifedipine: Differential Scanning Calorimetric and Rheological measurements | Cheng, Sixue; Chakravarty, Paroma; Nagapudi, Karthik; McKenna, Gregory | In the present work, the isothermal crystallization of amorphous pharmaceutical compounds GDC0276 and nifedipine are monitored by two different screening techniques: differential scanning calorimetric and rheometric measurements. | Session 57: Physics of Liquids |
| 975 | Probing medium viscoelasticity using signal transmission through coupled harmonic oscillators | Kundu, Avijit | This paper explores a similar problem in Jeffery viscoelastic fluid constituted of multiple polymeric time-constants. | Session 57: Physics of Liquids |
| 976 | Improvements of Simulation Methods in Microphase Formers | Zheng, Mingyuan; Charbonneau, Patrick | In this work, we evaluate the sampling efficiency of several enhanced Monte Carlo sampling techniques for disordered microphases, and devise optimized algorithms for specific regimes including cluster and percolated fluids. | Session 57: Physics of Liquids |
| 977 | Dynamic diversity of soft medium-range homo-radical self-assembly and rigid metal-organic network in non-aqueous redox flow batteries | Farag, Hossam; Kaur, Aman; Robertson, Lily; Shkrob, Ilya; Zhang, Lu; odom, susan; Zhang, Yang | Two solutions were compared: one contained metal cation electrolyte prone to form rigid hetero-charge network, and one contained phenothiazine organic catholyte preferring softer homo-radical stacking. | Session 57: Physics of Liquids |
| 978 | Chemical Phenomena at the Critical Point of Solution | Baird, James; Norris, Pauline; Wang, Xingjian; Lang, Joshua | Using a binary liquid mixture with a critical point of solution, we have shown that critical effects can also be observed in chemical phenomena as diverse as solubility, adsorption, and ion exchange. | Session 57: Physics of Liquids |
| 979 | Atomic Trajectories in Liquid Films Driven over a Substrate | Cam, Metehan; Goedde, Christopher; Lichter, Seth | We aim to apply new knowledge of the physics of the liquid-solid interfaces for developing molecular-level separation mechanisms mediated by solid substrates. | Session 57: Physics of Liquids |
| 980 | Charge oscillations in ionic liquids: A microscopic cluster model | Avni, Yael; Adar, Ram; Andelman, David | We develop an IL microscopic theory in terms of ionic clusters, which describes the IL behavior close to charged interfaces. | Session 57: Physics of Liquids |
| 981 | Dynamic view on ionic liquids acting in confinement for wood pretreatment | Frielinghaus, Henrich; Szekely, Noemi; Mangiapia, Gaetano; Hövelmann, Claas; Marks, Caroline; Viell, Joern | In this dynamic process we could identify three stages: (1) the impregnation, i.e. the flooding of the wood by the liquid, (2) the formation of small voids on the nanoscale, and (3) the formation of restructured nanocellulose fibrils on larger scales. | Session 57: Physics of Liquids |
| 982 | Conductance of Li-Ionic-Liquid Mixtures in Nanoporous MOFs as Separators for Li-Ion-Batteries | Vazquez, Micaela; Liu, Modan; Zhang, Zejun; Chandresh, Abhinav; Kanj, Anemar Bruno; Wenzel, Wolfgang; Heinke, Lars | Here, we investigate the mobility of Li-IL in the MOF and unveil the detailed conduction mechanism by all-atom molecular dynamics (MD). | Session 57: Physics of Liquids |
| 983 | Phase diagram of the two-dimensional symmetric associating lattice gas | Ibagon, Ingrid; Furlan, Alexandre; Dickman, Ronald | We use extensive Monte Carlo simulations to investigate the phase diagram of the symmetric associating lattice gas (ALG) model. | Session 57: Physics of Liquids |
| 984 | The Shape of Data in Chemistry – Insights Gleaned from Complex Solutions and Their Interfaces | Clark, Aurora | Highly non-ideal solutions are ever-present within chemistry, physics, and materials science – and are characterized by many-body effects across length and timescale. | Session 57: Physics of Liquids |
| 985 | No underscreening in dense electrolytes | Zeman, Johannes; Kondrat, Svyatoslav; Holm, Christian | Herein, we study bulk ionic screening with extremely large-scale molecular dynamics simulations, allowing us to assess the range of distances relevant to the experiments. | Session 57: Physics of Liquids |
| 986 | Expansion and shrinkage of the electrical double layer in charge-asymmetric electrolytes | Guerrero-Garcia, Guillermo; Gonzalez-Tovar, Enrique | In this work, we study the thickness of the electrical double layer as a function of the colloidal charge in the presence of several binary charge-asymmetric 1: z electrolytes with monovalent counterions and multivalent coions. | Session 57: Physics of Liquids |
| 987 | Effect of Electric Fields on the Director Field and Shape of Nematic Tactoids | Safdari, Mohammadamin; Zandi, Roya; Van der Schoot, Paul | We explain this by extending the Ocean-Frank elastic model of Kaznacheev et al. for bipolar tactoids to partially bipolar tactoids, where the degree of bipolarness of the director field is free to adjust itself to optimize the sum of the elastic, surface, and Coulomb free energies of the drops. | Session 57: Physics of Liquids |
| 988 | Structural and electronic transition in liquid rubidium | Kartoon, Daniela; Makov, Guy | Applying the quasi-crystalline model (QCM) we find that the short-range order of liquid Rb changes abruptly from bcc-like to b-tin-like at pressures between 14-20 GPa. | Session 57: Physics of Liquids |
| 989 | Symmetries and Hard Disk Configuration Spaces | Ericok, Ozan; Mason, Jeremy | Symmetries and Hard Disk Configuration Spaces | Session 57: Physics of Liquids |