Highlights of Fluid Dynamics (DFD) Talks @ APS 2021 March Meeting
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 Fluid Dynamics (DFD).
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TABLE : Fluid Dynamics (DFD)
| 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 | 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 2: Active Matter in Complex Environments |
| 26 | 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 2: Active Matter in Complex Environments |
| 27 | 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 2: Active Matter in Complex Environments |
| 28 | 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 2: Active Matter in Complex Environments |
| 29 | 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 2: Active Matter in Complex Environments |
| 30 | 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 2: Active Matter in Complex Environments |
| 31 | 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 2: Active Matter in Complex Environments |
| 32 | 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 2: Active Matter in Complex Environments |
| 33 | 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 2: Active Matter in Complex Environments |
| 34 | 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 2: Active Matter in Complex Environments |
| 35 | 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 2: Active Matter in Complex Environments |
| 36 | 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 2: Active Matter in Complex Environments |
| 37 | 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 2: Active Matter in Complex Environments |
| 38 | 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 2: Active Matter in Complex Environments |
| 39 | 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 2: Active Matter in Complex Environments |
| 40 | 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 2: Active Matter in Complex Environments |
| 41 | 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 2: Active Matter in Complex Environments |
| 42 | 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 2: Active Matter in Complex Environments |
| 43 | 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 2: Active Matter in Complex Environments |
| 44 | 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 2: Active Matter in Complex Environments |
| 45 | 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 2: Active Matter in Complex Environments |
| 46 | 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 2: Active Matter in Complex Environments |
| 47 | 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 2: Active Matter in Complex Environments |
| 48 | 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 2: Active Matter in Complex Environments |
| 49 | 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 2: Active Matter in Complex Environments |
| 50 | 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 2: Active Matter in Complex Environments |
| 51 | 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 2: Active Matter in Complex Environments |
| 52 | 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 2: Active Matter in Complex Environments |
| 53 | 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 2: Active Matter in Complex Environments |
| 54 | 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 2: Active Matter in Complex Environments |
| 55 | 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 2: Active Matter in Complex Environments |
| 56 | 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 2: Active Matter in Complex Environments |
| 57 | 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 2: Active Matter in Complex Environments |
| 58 | 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 2: Active Matter in Complex Environments |
| 59 | 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 2: Active Matter in Complex Environments |
| 60 | 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 2: Active Matter in Complex Environments |
| 61 | 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 2: Active Matter in Complex Environments |
| 62 | 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 2: Active Matter in Complex Environments |
| 63 | 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 2: Active Matter in Complex Environments |
| 64 | 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 2: Active Matter in Complex Environments |
| 65 | 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 2: Active Matter in Complex Environments |
| 66 | 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 2: Active Matter in Complex Environments |
| 67 | 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 2: Active Matter in Complex Environments |
| 68 | Effect of Valve Spacing on Pumping Performance of Lymphatic Vessels | Wolf, Ki; Dixon, J. Brandon; Alexeev, Alexander | For this work, we employ a fully coupled 3D fluid-structure interaction model to focus on the effect of lymphatic valve spacing and vessel contraction on pumping performance in terms of factors such as flowrate and pumping efficiency. | Session 3: Biological Flows |
| 69 | Systematic in silico investigation of the blood hyperviscosity syndrome and its biophysical origins | Javadi, Elahe; Deng, Yixiang; Karniadakis, George; Jamali, Safa | In this work, we implement a Dissipative Particle Dynamic method to study the effects of some important factors like plasma viscosity, RBC volume fraction, aggregation, and RBC deformability on the overall viscosity of blood. | Session 3: Biological Flows |
| 70 | The vasculature as a uniform perfusion network | Gounaris, Georgios; Ruiz Garcia, Miguel; Katifori, Eleni | We propose a novel local adaptation rule that stems from an approximation to the optimization process that accounts for homogeneous perfusion, energy dissipation and material cost. | Session 3: Biological Flows |
| 71 | Lingering dynamics of microvascular blood flow in vivo | Kihm, Alexander; Quint, Stephan; Laschke, Matthias; Menger, Michael; John, Thomas; Kaestner, Lars; Wagner, Christian | We present an experimental study on living hamsters investigating the lingering events and consequences thereof. | Session 3: Biological Flows |
| 72 | Hydrodynamic interactions in active suspensions | Lauga, Eric | In this talk, I will present recent work in my group where we study theoretically the impact the hydrodynamic interactions on motility. | Session 4: Complex Suspensions in Complex Fluids: Passive and Active Matter |
| 73 | Bizarre swimming in complex fluids and the role of confinement | Spagnolie, Saverio | We will discuss analytical and numerical insights into swimming through model viscoelastic (Oldroyd-B) and in particular liquid-crystalline (Ericksen-Leslie) fluids, with a special focus on the important and in some cases dominant roles played by the presence of nearby boundaries. | Session 4: Complex Suspensions in Complex Fluids: Passive and Active Matter |
| 74 | Active matter flows and self-organization inside of cells | Shelley, Michael | In that context, I’ll discuss how a symmetry-breaking "swirling" instability of a motor-laden cytoskeleton may be an important part of the development of an oocyte, and what models of active, immersed polymers tell us about chromatin dynamics in the nucleus. | Session 4: Complex Suspensions in Complex Fluids: Passive and Active Matter |
| 75 | Viscous dynamics of elastic filaments: from buckling instabilities to rheology | Saintillan, David; Liu, Yanan; LaGrone, John; Cortez, Ricardo; Fauci, Lisa; Du Roure, Olivia; Lindner, Anke; Chakrabarti, Brato | In this talk, I will discuss the dynamics of elastic filaments in microscale flows, with focus on buckling instabilities that arise when viscous stresses overcome bending rigidity in the presence of thermal fluctuations. | Session 4: Complex Suspensions in Complex Fluids: Passive and Active Matter |
| 76 | Motile microorganisms in complex fluids | Ardekani, Arezoo | In this study, we scrutinize the role of rheological properties of the surrounding fluid on the motility, spatial distribution, and collective behavior of microswimmers in complex fluids. | Session 4: Complex Suspensions in Complex Fluids: Passive and Active Matter |
| 77 | Fluid phase interface dynamics of coupled Lattice Boltzmann and molecular dynamics simulations | Cresta, Daniel; Denniston, Colin | Lattice-Boltzmann (LB) simulations have been used extensively over the past several decades in the study of hydrodynamics. | Session 5: Computational Fluid Dynamics |
| 78 | ML-PDE: A Framework for a Machine Learning Enhanced PDE Solver | Pathak, Jaideep; Mustafa, Mustafa; Kashinath, Karthik; Motheau, Emmanuel; Kurth, Thorsten; Day, Marcus | We introduce a machine learning (ML) technique based on a deep neural network architecture that corrects the numerical errors induced by a coarse-grid simulation of turbulent flows at high-Reynolds numbers, while simultaneously recovering an estimate of the high-resolution fields. | Session 5: Computational Fluid Dynamics |
| 79 | Numerical and analytical studies of wind-wave growth | Bonfils, Anthony; Moon, Woosok; MITRA, Dhrubaditya; Wettlaufer, John | In 1957, Miles proposed a linear theory for the growth of wind-induced small ripples on water. | Session 5: Computational Fluid Dynamics |
| 80 | Molecular dynamics simulation study of a polymer droplet motion over an array of spherical nanoparticles | Thomas, Anish; Priezjev, Nikolai | We consider the bead-spring model to represent a polymeric liquid that partially wets a rough surface composed of a periodic array of spherical particles. | Session 5: Computational Fluid Dynamics |
| 81 | Novel closed non-harmonic solutions for 1D, 2D, and 3D-wave equations with time as a directional angle in generalized (n+1)-spherical coordinates | Munera, Hector | Standard solutions use n-spatial dimensions (n=1,2,3) plus one independent time t dimension. | Session 5: Computational Fluid Dynamics |
| 82 | Energy conservation equation for one-component pseudopotential lattice Boltzmann method | Czelusniak, Luiz; Wagner, Alexander; Cabezas-Gómez, Luben | This talk focuses on studying the application of an ECE coupled to the pseudopotential method for multiphase simulation. | Session 5: Computational Fluid Dynamics |
| 83 | Numerical model of the Moving Burning Surface in High-energy Systems | Kiryushkin, Alexander; Minkov, Leonid | In this study, we consider the coupled problem of tracking the burning surface together with calculating flow parameters in high-energy systems. | Session 5: Computational Fluid Dynamics |
| 84 | Accellerating Integer Lattice Gasses by using a Sampling Collision Operator | Seekins, Noah; Wagner, Alexander | The Integer Lattice Gas provides a solution to one of the major problems that the Boolean Lattice Gas has by ensuring it recovers the proper Boltzmann Distribution as opposed to the Fermi-Dirac Distribution recovered by the Boolean Lattice Gas. | Session 5: Computational Fluid Dynamics |
| 85 | Glazing of Doughnuts: Non-Normal Instability and Asymmetric Pattern Formation | White, Nicholas; Troian, Sandra | By a combination of multiple-scale analysis and center manifold techniques, Roy, Roberts and Simpson (2002) were able to develop a general nonlinear interface equation, whose solutions reveal the mechanism responsible for film thinning near regions of high substrate curvature. | Session 5: Computational Fluid Dynamics |
| 86 | Adsorption of graphene-oxide nanoparticle at a water-vapour interface: a molecular dynamics investigation | Gravelle, Simon; Botto, Lorenzo | To get insights into the processes governing GO adsorption, we use molecular simulations to simulate GO nanoparticles at the interface between water and vapour. | Session 5: Computational Fluid Dynamics |
| 87 | Falling films over phase-changing planes | Dhas S, Darish Jeswin; Toppaladoddi, Srikanth; Roy, Anubhab | We study the interplay between shear, buoyancy, and phase change on the stability of a flow of a liquid over an inclined, phase-changing plane under the influence of gravity. | Session 5: Computational Fluid Dynamics |
| 88 | Partial Leidenfrost Evaporation-Assisted Fast Solute Enrichment in a Water Droplet on Hierarchical Micro/Nanostructures | Cheng, Jiangtao | Here, we report partial Leidenfrost evaporation-assisted fast enrichment of low-concentration analytes in water droplets on hierarchical plasmonic micro/nanostructures, which are fabricated by implanting nanoantennas on carbon nanotubes-decorated Si micropillar arrays. | Session 6: Drops |
| 89 | Direct friction force measurements of water droplets rolling on superhydrophobic surfaces | Backholm, Matilda; Molpeceres, Daniel; Vuckovac, Maja; Nurmi, Heikki; Hokkanen, Matti; Jokinen, Ville; Timonen, Jaakko; Ras, Robin | In our work, we have applied micropipette force sensors to directly quantify droplet friction forces at nanonewton resolution (Backholm, et al., Commun. | Session 6: Drops |
| 90 | A granular analogue of the Plateau-Rayleigh instability in bubble rafts | Lee, Carmen; Dalnoki-Veress, Kari | Here, we examine the interplay between surface tension and buoyancy in the breakup of a raft of bubbles that is initially shaped into a thin strip. | Session 6: Drops |
| 91 | Time evolution of colloidal stratification in a drying droplet | Jiang, Zhiyu; Shen, Chong; Li, Lanfang; Xu, Ye; Ou-Yang, H Daniel; Roche, Carly | This talk will present the spatiotemporal evolution of the concentration for small and big particles and show the stratification can be controlled by adjusting the convection and diffusiophoresis. | Session 6: Drops |
| 92 | Impact of surface viscosity on the stability of a droplet translating through a stagnant fluid. | Singh, Natasha; Narsimhan, Vivek | This study examines the impact of interfacial viscosity on the stability of an initially deformed droplet translating through an unbounded quiescent fluid. | Session 6: Drops |
| 93 | Coalescence speed of two equal-sized nanobubbles | Bird, Eric; Zhou, Jun; Liang, Zhi | From the theoretical model, we find neither liquid viscous force nor liquid inertial force dominates at later time of coalescence of the model NBs. | Session 6: Drops |
| 94 | Drop impact of anisotropic colloidal suspensions | Shah, Phalguni; Arora, Srishti; Chepuri, Ravi; Driscoll, Michelle | In order to explore the effect of anisotropy on impact dynamics, we experimentally study the drop impact of rod-shaped colloidal suspensions. | Session 6: Drops |
| 95 | Quasi-two-dimensional coalescence of liquid in another liquid | Koga, Yukina; Okumura, Ko | Here, we performed the same experiment but with the viscosity contrast reversed (the drop viscosity is lower than the surrounding liquid) to seek different scaling regimes, by using a high-speed camera and a microscope lens. | Session 6: Drops |
| 96 | Parametric Charactrization of Coaxial Drop Dripping Encapsulation Process | Ismail, Ahmed; Castrejon-Pita, Jose Rafael; Azevedo, Helena | In this study, we present a detailed characterization on encapsulation via coaxial drop dripping into a liquid bath. | Session 6: Drops |
| 97 | Hydrodynamic Spin Lattices | Saenz, Pedro; Pucci, Giuseppe; Turton, Sam; Goujon, Alexis; Rosales, Rodolfo; Dunkel, Jorn; Bush, John | We introduce a hydrodynamic analog system that allows us to investigate simultaneously the wave-mediated self-propulsion and interactions of effective spin degrees of freedom in inertial and rotating frames. | Session 6: Drops |
| 98 | Droplet Dynamics on a Vibrating Vertical Wire | Hooshanginejad, Alireza; Frohlich, Karl; Jung, Sunghwan | In this study, we investigate dynamics of a droplet under the effect of vibrations on a vertical wire both experimentally and theoretically. | Session 6: Drops |
| 99 | Capillary flow mediated dynamics of liquid droplet generation from a yarn | Sarma, Bhaskarjyoti; Dalal, Amaresh; Basu, Dipankar | We explore with a range of liquid viscosity to show that these dynamics in each regime are universal and can be elucidated with the help of unified scaling laws. | Session 6: Drops |
| 100 | Atomization regimes in liquid jets due to pressure driven flow in a cylindrical nozzle with MHz frequency acoustic vibration | Connacher, William; Orosco, Jeremy; Friend, James | We model this flow and perform stability analysis to reveal the effects of system parameters on capillary wave growth. | Session 6: Drops |
| 101 | Joint effect of advection, diffusion, and capillary attraction on the spatial structure of particle depositions from evaporating droplets | Kolegov, Konstantin; Barash, Lev | A simplified model is developed, which allows us to perform computer simulations of the particles transport in an evaporating droplet with a contact line pinned to a hydrophilic substrate. | Session 6: Drops |
| 102 | How sedimenting droplets grow and stir the fluid | MITRA, Dhrubaditya; Bhatnagar, Akshay; Perlekar, Prasad | We construct a scaling theory that help us understand these numerical results. | Session 6: Drops |
| 103 | Chiral Emulsions | Adams, Laura | We derive an analytical model predicting which pattern is more likely and assembles in the least amount of time. | Session 6: Drops |
| 104 | How a raindrop gets shattered on biological surfaces | Kim, Seungho; Wu, Zixuan; Esmaili, Ehsan; Dombroskie, Jason; Jung, Sunghwan | In this present study, we found that a spreading drop at a high speed can generate wrinkled pattern (including shock-like waves) on a spreading liquid in the presence of surface morphology at the micro scale. | Session 6: Drops |
| 105 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 106 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 107 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 108 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 109 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 110 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 111 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 112 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 113 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 114 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 115 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 116 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 117 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 118 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 119 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 120 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 121 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 122 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 123 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 124 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 125 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 126 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 127 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 128 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 129 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 130 | 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 7: Electrostatic Manipulation of Fluids and Soft Matter |
| 131 | Patchy elastic turbulence generates anomalous flow resistance in porous media | Datta, Sujit; Browne, Christopher | Our work thus helps to resolve the long-standing puzzle of why polymer solutions exhibit an anomalous increase in macroscopic flow resistance in porous media and provides guidelines for predicting and controlling these flows. | Session 8: Flow of Complex Fluids |
| 132 | Micromixing of non-Newtonian fluids | Daher, Kira; Barrett, Ryan; Raihan, Mahmud; Xuan, Xiangchun | This study examines the micromixing of non-Newtonian fluids through a constriction within a T-shaped microchannel. | Session 8: Flow of Complex Fluids |
| 133 | Coupling flow directions in emulsions with wall roughness | Majhi, Akankshya; Kool, Lars; Serial, Raquel; Dijksman, Joshua; Van der Gucht, Jasper | In this work, we show that wall patterning can be used to generate flow in two orthogonal directions that affect each other significantly. | Session 8: Flow of Complex Fluids |
| 134 | Coupling of particle ordering and stress fluctuations in shear thickening suspensions revealed by high speed confocal line scan imaging | Miller, Joia; Blair, Daniel; Urbach, Jeffrey | Here we use line scans on a confocal microscope to visualize high speed particle flows in a sheared suspension. | Session 8: Flow of Complex Fluids |
| 135 | Dectection of heterogeneities in a shear thickening suspension through a local normal stress measurement | Gauthier, Anais; Pruvost, Mickael; Colin, Annie | We study the shear-thickening of a concentrated suspension of non-brownian particles (cornstarch) using an in-house sensor array. | Session 8: Flow of Complex Fluids |
| 136 | Mapping the nonlinear stress propagation in topological polymer blends | Peddireddy, Karthik; Aguirre, Gina; Garamella, Jonathan; McGorty, Ryan; Robertson-Anderson, Rae | We perform these measurements on entangled solutions of linear and ring DNA, as well as blends of DNA and microtubules. | Session 8: Flow of Complex Fluids |
| 137 | The “Little” Bang: Tracing Bubble Growth Back to Nucleation in Polymer Foaming | Ylitalo, Andrew; Chao, Huikuan; Fitzgibbons, Thomas; Mantha, Sriteja; Ginzburg, Valeriy; Zhou, Weijun; Di Maio, Ernesto; Flagan, Richard; Wang, Zhen-Gang; Kornfield, Julie | We modeled their growth with an Epstein-Plesset model modified to account for depressurization, using thermophysical properties of polyol and CO2 mixtures measured with the Di Maio group (U Naples) as model parameters. | Session 8: Flow of Complex Fluids |
| 138 | Numerical modeling of droplet formation for weakly elastic fluids using level set model | Pouraria, Hassan; Foudazi, Reza | The present study aims at modeling the droplet formation of weakly elastic fluids in the dripping regime. | Session 8: Flow of Complex Fluids |
| 139 | Pinching dynamics, rheology and elastic instabilities of Boger fluids | Kubinski, Alexander; Albreiki, Fahed; Sharma, Vivek | In this study, we investigate the shear and extensional rheology response of Boger fluids to identify the role played by enhancement in solvent viscosity at a fixed polymer concentration. | Session 8: Flow of Complex Fluids |
| 140 | Studies on hydrodynamic stability of viscoelastic flows in a Hele-Shaw cell. | Daripa, Prabir; Hai, Zhiying | We will present some recent results on the stability of Multi-Layer Hele-Shaw flows of viscoelastic fluids in a Hele-Shaw cell. | Session 8: Flow of Complex Fluids |
| 141 | Elastic Turbulence is Spatially Patchy in 3-D Porous Media | Browne, Christopher; Datta, Sujit | Here, we use direct visualization in model three-dimensional porous media to address this gap in knowledge. | Session 8: Flow of Complex Fluids |
| 142 | Nonequilibrium osmotic pressure in sticky-probe active microrheology | Huang, Derek; Zia, Roseanna | We present a theoretical study of the influence of interparticle attractions and hydrodynamic interactions on nonequilibrium osmotic pressure in a colloidal suspension via active microrheology, where a Brownian probe driven by external forces through the suspension is tracked to infer rheology. | Session 8: Flow of Complex Fluids |
| 143 | Fluid rheological effects on polymer solution flows in an expansion-contraction microchannel | Raihan, Mahmud; Jagdale, Purva; Xuan, Xiangchun | We perform a systematic experimental study of the fluid rheological effects on polymer solution flows through a single expansion-contraction microchannel. | Session 8: Flow of Complex Fluids |
| 144 | Impact of mucus rheology on exhaled droplet dispersal and COVID-19 | Chang, Brian; Kudrolli, Arshad | To address this, we investigate mucosalivary dispersal and deposition onto horizontal surfaces corresponding to human exhalations with physical experiments under still-air conditions. | Session 9: Fluid Physics of Diseases Transmission |
| 145 | On The Modeling and Simulation of COVID-19 Spreading In a Classroom | Abuhegazy, Mohamed; Talaat, Khaled; Elhagali, Ibrahim O.; Anderoglu, Osman; Poroseva, Svetlana | In this study, we investigated aerosol transport and surface deposition in a realistic classroom environment using Computational Fluid Dynamics (CFD) simulations. | Session 9: Fluid Physics of Diseases Transmission |
| 146 | Virus stability in evaporating respiratory droplets | Alves Moreira Gonçalves, Marta; Weon, Byung Mook | Here we aim to understand the influence of evaporation on the stability of a virus on a respiratory droplet. | Session 9: Fluid Physics of Diseases Transmission |
| 147 | Exit time of a colloidal particle out of a sedimenting drop | Murugan, Nishanth; Roy, Anubhab | Exit time of a colloidal particle out of a sedimenting drop | Session 9: Fluid Physics of Diseases Transmission |
| 148 | Flow past a confined array of rigid hairs | Dressaire, Emilie; Jones, Nathan; Tanikella, Sri Savya | To develop sensors inspired by those biological systems, we study the influence of confinement on the flow regimes through the porous structure. | Session 10: Fluid Structure Interactions |
| 149 | A lattice Boltzmann based reference map technique for fluid–structure interaction | Sun, Yue; Rycroft, Christopher | Here we present an extension to the LB method to model fluid–structure interaction problems involving solids undergoing large deformation. | Session 10: Fluid Structure Interactions |
| 150 | Airflow dynamics induced by insect-inspired anisotropic flapping wings | Antier, Romeo; Thiria, Benjamin; Godoy-Diana, Ramiro | In this work, we address the problem of inhomegeneous deformable flapping wings as observed, for instance, in insects where the veins fix the elasticity of the wings and their anisotropy. | Session 10: Fluid Structure Interactions |
| 151 | Drag of the Insect-inspired Axisymmetric Body with the Small Length-to Diameter Ratio | Poroseva, Svetlana; Vorobieff, Peter | Drag of the Insect-inspired Axisymmetric Body with the Small Length-to Diameter Ratio | Session 10: Fluid Structure Interactions |
| 152 | Surface deformation and friction properties of free surface flows over a train of cylindrical ribs | Martinez Carreaux, Francisco Javier; Medina, Matias; Parra, Dayanna | We report experimental measures about the surface deformation and the friction factor of turbulent, subcritical & quasi-uniform flows facing an array of half-cylinders at the bottom of a horizontal flume. | Session 10: Fluid Structure Interactions |
| 153 | Elastic sheets in shear flows, from single sheet behavior to exfoliation process: an experimental study. | PERRIN, Hugo; Botto, Lorenzo | To investigate the role of the three ingredients and the modes of deformation, here we present the first model experiment of elastic adhesive sheets in shear flows at the macroscopic scale. | Session 10: Fluid Structure Interactions |
| 154 | Fluid-structure interactions in a soft-walled Hele-Shaw cell | Cuttle, Callum; Pramanik, Satyajit; Guan, Jian Hui; MacMinn, Christopher | Here, we study these interactions in the context of a model problem: Flow in a deformable Hele-Shaw cell, where one wall is rigid and the other is soft. | Session 10: Fluid Structure Interactions |
| 155 | Investigating Acoustic Mode Measurements in a Liquid Sodium Environment | Myers, Heidi; Burnett, Sarah; Lekic, Vedran; Lathrop, Daniel | Here we present acoustic measurements on the simpler geometry of the tank under various pressures, with and without liquid sodium. | Session 10: Fluid Structure Interactions |
| 156 | A Comparison of Unimorph and Bimorph Circular Piezoceramic Discs For Synthetic Jet Actuator Performance | Gungordu, Baris; Jabbal, Mark; Popov, Atanas | This study focuses on the performance indicators of synthetic jet actuators by comparing a unimorph piezoceramic diaphragm with a similar dimension of a bimorph one. | Session 10: Fluid Structure Interactions |
| 157 | Body pitching and bobbing shape the aerodynamic force, power, and stability of wild silkmoths | Sikandar, Usama; Aiello, Brett; Sponberg, Simon | An analysis of digitized wing shapes and forward flight 3D kinematics from nine silkmoth species shows that body oscillation magnitude is strongly associated with flapping frequency and wing loading (p<0.05). | Session 10: Fluid Structure Interactions |
| 158 | Scaling laws for intrusion into granular materials and granular-fluid mixtures | Clark, Abe; Dijksman, Joshua; Krizou, Nasser; Brassard, Marc; Causley, Neil; Strader, Joshua | This talk will summarize our recent work on moderate- and high-speed impacts into (1) dry granular media, (2) dense suspensions and (3) fluid-saturated granular beds. | Session 11: Granular, Porous Media, and Multiphase Flows |
| 159 | Using colloidal deposition to mobilize immiscible fluids from porous media | Schneider, Joanna; Priestley, Rodney; Datta, Sujit | Most studies focus on accomplishing this goal using particles that localize at immiscible fluid interfaces. | Session 11: Granular, Porous Media, and Multiphase Flows |
| 160 | Forced Imbibition in Stratified Porous Media | Lu, Nancy; Pahlavan, Amir; Browne, Christopher; Amchin, Daniel; Stone, Howard; Datta, Sujit | We address this gap in knowledge by directly visualizing forced imbibition in three-dimensional (3D) porous media with two parallel strata. | Session 11: Granular, Porous Media, and Multiphase Flows |
| 161 | Mapping out the force network in shear thickening colloidal suspensions | Ramaswamy, Meera; Griniasty, Itay; Cohen, Itai | Here, we present a novel shear protocol that allows us to gain insight into the three dimensional force network in these shear thickening suspensions. | Session 11: Granular, Porous Media, and Multiphase Flows |
| 162 | Gas-liquid phase separation in a soft porous medium | Paulin, Oliver; Morrow, Liam; Hennessy, Matthew; MacMinn, Christopher | We construct a phase-field model informed by large-deformation poromechanics, in which two immiscible fluids interact with a poroelastic solid skeleton. | Session 11: Granular, Porous Media, and Multiphase Flows |
| 163 | Computational characterization of nonwoven fiber materials: Predicting permeability from pore-space morphology | Wang, Fang; Kumari, Suman; Schiller, Ulf | In this contribution, we present a computational framework for generating realistic random fibrous media with a wide range of porosities and systematically analyze the effect of pore size distribution on permeability and tortuosity. | Session 11: Granular, Porous Media, and Multiphase Flows |
| 164 | Transport and filtration of aggregate particles in a porous media | Delouche, Nolwenn; Tabuteau, Hervé | Here, we study the impact of these aggregates on the clogging of interconnected pores within a porous medium. | Session 11: Granular, Porous Media, and Multiphase Flows |
| 165 | Percolation through Voids around Structurally Disordered Impermeable Inclusions | Priour, Donald | To account for the high degree of irregularity of grains in realistic systems, we provide a geometrically exact treatment of percolation phenomena involving strongly disordered barrier particles. | Session 11: Granular, Porous Media, and Multiphase Flows |
| 166 | Nanoparticle transport in porous media | Parsa, Shima; Wong, Tony | We investigate the two-way coupling between retention of nanoparticles and pore-level flow distribution experimentally. | Session 11: Granular, Porous Media, and Multiphase Flows |
| 167 | Deformation-driven solute transport in soft porous media | Fiori, Matilde; Pramanik, Satyajit; MacMinn, Christopher | We show that these reversible deformations lead to non-reversible spreading and mixing, even in a homogeneous medium. | Session 11: Granular, Porous Media, and Multiphase Flows |
| 168 | A phase-field model for capillary bulldozing | Morrow, Liam; Paulin, Oliver; Hennessy, Matthew; MacMinn, Christopher | Here, we present a thermodynamically consistent phase-field model for capillary bulldozing. | Session 11: Granular, Porous Media, and Multiphase Flows |
| 169 | Capillary replacement between two mutually immiscible liquids on an open channel | Yasuga, Hiroki; Okumura, Ko | In this study, we investigated the capillary replacement on an open channel. | Session 11: Granular, Porous Media, and Multiphase Flows |
| 170 | Simulating fluid flow with carbon dioxide in digital rock | Steiner, Mathias; Ferreira, Rodrigo; Giro, Ronaldo | We present our initial results of capillary network flow simulations obtained with hierarchical, multi-phase flow models which are calibrated through molecular dynamics simulation. | Session 11: Granular, Porous Media, and Multiphase Flows |
| 171 | Displacement flow in an Elastic Fracture | Tanikella, Sri Savya; Dressaire, Emilie | We revisit the classical displacement flow problem in a growing fracture. | Session 11: Granular, Porous Media, and Multiphase Flows |
| 172 | A Star is Born: Distinct Marangoni Particulate Patterns Emerging in Confined Spaces | Mandsberg, Nikolaj; Boisen, Anja | In particular, we studied the (dynamic) transition from circle to star shape as a function of both initial particle density and added soap volume. | Session 12: Interfacial flows |
| 173 | Shape transitions of red blood cells in time-dependent microfluidic flows | Recktenwald, Steffen; Wagner, Christian | We analyze the time-dependent shapes and dynamics of the cells as a function of the pressure waveform, amplitude, and frequency to understand how the time scale of the flow couples with the characteristic time scale of single RBCs in capillaries. | Session 12: Interfacial flows |
| 174 | Surface Tension and Surface Excess Analysis of Binary Mixtures of Pentane and 2-Methylpentane for Use in Wickless Heat Pipes | Visco, Angelo; Mann, Elizabeth; Mann, J.; Belgovskiy, Alexander; Meyer, William; Smart, Anthony; Thapa, Nabin | With these improvements, we present surface tension and viscosity measurements of a binary mixture system of pentane and 2-methylpentane. | Session 12: Interfacial flows |
| 175 | Nonlinear traveling waves on the interface of a ferrofluid droplet subjected to magnetic field | Yu, Zongxin; Christov, Ivan | In this talk, we demonstrate that the combination of a radial and azimuthal external magnetic field can manipulate the interfacial shape of a linearly unstable ferrofluid droplet in a confined Hele-Shaw configuration. | Session 12: Interfacial flows |
| 176 | Marangoni flows and deposits in colloidal binary droplets | OH, GUN; Jeong, Woojun; Weon, Byung | To understand and manipulate Marangoni flows in colloidal binary droplets, we investigate droplet evaporation and deposition dynamics by changing relative mass ratio of binary solvents. | Session 12: Interfacial flows |
| 177 | Naturally-Occurring Surface-Shock Starburst Instabilities | Toll, Harrison; Jones, Charlotte; Schoeberlein, Mira; Jensen, Katharine | In this work, we analyze field videos of these naturally-occurring starbursts that we collected over two summer seasons at Matanuska, as well as a related cracking instability that occurs in particularly dense, muddy areas. | Session 12: Interfacial flows |
| 178 | Eigenmode analysis of membrane stability in inviscid flow | Mavroyiakoumou, Christiana; Alben, Silas | We compare the eigenvalue analysis with simulations of the corresponding initial value problem in the small-amplitude (growth) regime. | Session 12: Interfacial flows |
| 179 | Oily jets by bubble bursting at an air/water/oil interface | Ji, Bingqiang; Yang, Zhengyu; Feng, Jie | We observe that the oil layer damps the capillary waves during cavity collapse, hence decreasing the jet radius and increasing the jet velocity. | Session 12: Interfacial flows |
| 180 | Particle driven in a crystalline colloidal monolayer | Deng, Jiayi; Molaei, Mehdi; Chisholm, Nicholas; Radhakrishnan, Ravi; Stebe, Kathleen | We study the displacement fields around driven ferromagnetic probes particles in monolayers of PS colloidal particles at oil-water interfaces in gaseous, liquid, and crystalline states, increasing the importance of many body effects as order in the monolayer increases. | Session 12: Interfacial flows |
| 181 | Interfacial properties of poly- and perfluoroalkyl substances at the air-water interface | Abbasian Chaleshtari, Zahra; Foudazi, Reza | In the present study, PFAS adsorption kinetics and equilibrium at the air-water interface are studied by measuring the dynamic surface tension. | Session 12: Interfacial flows |
| 182 | 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 13: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 183 | 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 13: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 184 | 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 13: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 185 | 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 13: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 186 | 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 13: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 187 | 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 13: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 188 | 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 13: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 189 | 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 13: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 190 | 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 13: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 191 | 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 13: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 192 | 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 13: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 193 | 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 13: Microflows Meet Soft Matter: Compliance, Growth, Instabilities and Beyond |
| 194 | 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 14: Physics and Chemistry of Polymer 3D Printing |
| 195 | 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 14: Physics and Chemistry of Polymer 3D Printing |
| 196 | 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 14: Physics and Chemistry of Polymer 3D Printing |
| 197 | 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 14: Physics and Chemistry of Polymer 3D Printing |
| 198 | 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 14: Physics and Chemistry of Polymer 3D Printing |
| 199 | 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 14: Physics and Chemistry of Polymer 3D Printing |
| 200 | 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 14: Physics and Chemistry of Polymer 3D Printing |
| 201 | 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 14: Physics and Chemistry of Polymer 3D Printing |
| 202 | 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 14: Physics and Chemistry of Polymer 3D Printing |
| 203 | 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 14: Physics and Chemistry of Polymer 3D Printing |
| 204 | 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 14: Physics and Chemistry of Polymer 3D Printing |
| 205 | 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 15: Physics of Biofilms |
| 206 | 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 15: Physics of Biofilms |
| 207 | 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 15: Physics of Biofilms |
| 208 | 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 15: Physics of Biofilms |
| 209 | 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 15: Physics of Biofilms |
| 210 | 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 15: Physics of Biofilms |
| 211 | 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 15: Physics of Biofilms |
| 212 | 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 15: Physics of Biofilms |
| 213 | 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 15: Physics of Biofilms |
| 214 | 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 15: Physics of Biofilms |
| 215 | 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 15: Physics of Biofilms |
| 216 | 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 15: Physics of Biofilms |
| 217 | 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 15: Physics of Biofilms |
| 218 | 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 15: Physics of Biofilms |
| 219 | 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 15: Physics of Biofilms |
| 220 | 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 15: Physics of Biofilms |
| 221 | 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 15: Physics of Biofilms |
| 222 | 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 15: Physics of Biofilms |
| 223 | 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 15: Physics of Biofilms |
| 224 | 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 15: Physics of Biofilms |
| 225 | 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 15: Physics of Biofilms |
| 226 | 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 15: Physics of Biofilms |
| 227 | 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 15: Physics of Biofilms |
| 228 | 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 15: Physics of Biofilms |
| 229 | 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 16: Physics of Liquids |
| 230 | 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 16: Physics of Liquids |
| 231 | 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 16: Physics of Liquids |
| 232 | 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 16: Physics of Liquids |
| 233 | 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 16: Physics of Liquids |
| 234 | 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 16: Physics of Liquids |
| 235 | 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 16: Physics of Liquids |
| 236 | 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 16: Physics of Liquids |
| 237 | 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 16: Physics of Liquids |
| 238 | 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 16: Physics of Liquids |
| 239 | 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 16: Physics of Liquids |
| 240 | 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 16: Physics of Liquids |
| 241 | 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 16: Physics of Liquids |
| 242 | 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 16: Physics of Liquids |
| 243 | 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 16: Physics of Liquids |
| 244 | 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 16: Physics of Liquids |
| 245 | 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 16: Physics of Liquids |
| 246 | 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 16: Physics of Liquids |
| 247 | 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 16: Physics of Liquids |
| 248 | 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 16: Physics of Liquids |
| 249 | 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 16: Physics of Liquids |
| 250 | 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 16: Physics of Liquids |
| 251 | 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 16: Physics of Liquids |
| 252 | 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 16: Physics of Liquids |
| 253 | 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 16: Physics of Liquids |
| 254 | Symmetries and Hard Disk Configuration Spaces | Ericok, Ozan; Mason, Jeremy | Symmetries and Hard Disk Configuration Spaces | Session 16: Physics of Liquids |
| 255 | Capillary-driven indentation of a small particle into a soft, oil-coated surface | Glover, Justin; Pham, Jonathan | A simple model that balances the capillary force of the oil layer with the elastic and surface forces from the substrate is proposed to predict the position of the particle. | Session 17: Polymers and Soft Solids at Interfaces: Tribology, Wear, Rheology and Interactions |
| 256 | Lubricated hydrodynamic interactions between a hard spherical indenter and a poroelastic nanolayer | Kopecz-Muller, Caroline; Bertin, Vincent; Abdorahim, Marjan; Tran, Yvette; Tabeling, Patrick; Raphael, Elie; McGraw, Joshua; Salez, Thomas | Here, we establish theoretical models and perform numerical simulations for the particle motion. | Session 17: Polymers and Soft Solids at Interfaces: Tribology, Wear, Rheology and Interactions |
| 257 | Relaxation and Recovery in Hydrogel Friction on Smooth Surfaces | Burton, Justin | Here we examine this regime in closer detail for PAA hydrogels. | Session 17: Polymers and Soft Solids at Interfaces: Tribology, Wear, Rheology and Interactions |
| 258 | Elastohydrodynamic interactions between a spherical particle and a soft boundary. | Bertin, Vincent; Zhang, Zaicheng; Arshad, Muhammad; Maali, Abdelhamid; Raphael, Elie; Salez, Thomas | In particular, we present experimental measurements at the nanoscale of the elastohydrodynamic lift force, using an Atomic Force Microscope in quantitative agreement with the derived asymptotic theory. | Session 17: Polymers and Soft Solids at Interfaces: Tribology, Wear, Rheology and Interactions |
| 259 | How osmotic pressure governs surface structures and sliding friction on swollen crosslinked hydrogels | Johnson, Christopher; Reale, Erik; Dunn, Alison | Here I present two vignettes illustrating this connection. | Session 17: Polymers and Soft Solids at Interfaces: Tribology, Wear, Rheology and Interactions |
| 260 | The slippery slope of frictional layered structures | Poincloux, Samuel; De Geus, Tom; Wyart, Matthieu; Reis, Pedro | Specifically, we investigate a system of stacked plates with frictional interfaces forced to slide simultaneously. | Session 17: Polymers and Soft Solids at Interfaces: Tribology, Wear, Rheology and Interactions |
| 261 | Soft and rough: Tribology of naturally and artificially rough hydrogels | Rudge, Raisa; Scholten, Elke; Dijksman, Joshua | We use a 3D-printed tribometer and measure the friction coefficient of 4 hydrogels: polyacrylamide, physically and chemically cross-linked gelatin, and agar. | Session 17: Polymers and Soft Solids at Interfaces: Tribology, Wear, Rheology and Interactions |
| 262 | Formation of Pickering Emulsions Using Nanodiamonds | Farias, Barbara; Jani, Pallav; Khan, Saad | We examine here the use of nanodiamonds (ND), a relatively novel carbonaceous filler with high adsorption activity, small size, and large surface area to create solid stabilized emulsions. | Session 17: Polymers and Soft Solids at Interfaces: Tribology, Wear, Rheology and Interactions |
| 263 | Dynamics of Confined Microgel Liquids between Compliant Surfaces | Lin, Kehua; Zhu, Yingxi Elaine | In this work, we employed poly(N-isopropylacrylamide) (PNIPAM) microgels of varied crosslinking density as the confined liquids as well as confining surface coatings. | Session 17: Polymers and Soft Solids at Interfaces: Tribology, Wear, Rheology and Interactions |
| 264 | Influence of bending patterns on soft tribology | Serfass, Christopher; Peng, Yunhu; Hsiao, Lilian | To explain this phenomenon, we employ cantilever beam theory and empirical statistical regression. | Session 17: Polymers and Soft Solids at Interfaces: Tribology, Wear, Rheology and Interactions |
| 265 | Viscoelastic Lubrication of Model Emulsions in Shear-Thinning Matrix | Lim, Ming Yao; Xu, Yuan; Shewan, Heather; Stokes, Jason | We studied soft lubrication of model emulsions with oil droplets dispersed in non-Newtonian hydrocolloid solutions designed to be iso-viscous at low- and high-shear rates respectively. | Session 17: Polymers and Soft Solids at Interfaces: Tribology, Wear, Rheology and Interactions |
| 266 | What can the deformation of colloids tell us about earthquake hazards? | Cooke, Michele | What can the deformation of colloids tell us about earthquake hazards? | Session 18: Soft Matter Physics in a Geophysical Context |
| 267 | Tuning sedimentation of clay particles through surface charge interactions | Seiphoori, Ali; Gunn, Andrew; Kosgodagan Acharige, Sebastien; Arratia, Paulo; Jerolmack, Douglas | Here we tune the interaction of kaolinite clay particles from attractive to repulsive to examine the effects of surface charge on the rate and style of sedimentation. | Session 18: Soft Matter Physics in a Geophysical Context |
| 268 | Glassy hillslopes and quiescent sandpiles: rendering sub-yield granular creep with Diffusing Wave Spectroscopy | Deshpande, Nakul; Furbish, David; Arratia, Paulo; Jerolmack, Douglas | Nonetheless, we observe persistent creeping strains (10 -6). | Session 18: Soft Matter Physics in a Geophysical Context |
| 269 | Pressure response on granular impacts: how far the Boussinesq model can go? | Martinez Carreaux, Francisco Javier; Urrea, Maria P.; Gonzalez, Claudia M.; Varas, German | In the present report, we question how this model can be extended when dealing with granular impacts. | Session 18: Soft Matter Physics in a Geophysical Context |
| 270 | Mud as a soft matter system: Stability of aggregates under time-periodic flow | Bester, Cacey; Galloway, Larry; Lee, Dylan; Arratia, Paulo; Jerolmack, Douglas | We thereby describe the formation, breakup, and transport of granular aggregates due to the relative importance of shear stresses and interparticle forces. | Session 18: Soft Matter Physics in a Geophysical Context |
| 271 | Stick-slip dynamics generated by granular materials with varying grain angularity | Kozlowski, Ryan; Zheng, Hu; Daniels, Karen; Socolar, Joshua | In this work, we experimentally investigate the effects of grain angularity on stick-slip dynamics in a slowly driven granular medium consisting of regular polygonal grains; the gravity-packed granular bed is sheared via a weighted slider pulled by a spring. | Session 18: Soft Matter Physics in a Geophysical Context |
| 272 | Probing Granular Materials in Extraterrestrial Gravities | Featherstone, Jack; Bullard, Robert; Emm, Tristan; Jackson, Anna; Reid, Riley; Shefferman, Sean; Dove, Adrienne; Colwell, Joshua; Kollmer, Jonathan; Daniels, Karen | We employ a classic granular physics technique, photoelasticity, to quantify the dynamics of a flexible intruder during its insertion into a laboratory system of bi-disperse, cm-sized model grains at various speeds and under four different levels of gravity: terrestrial, martian, lunar, and microgravity. | Session 18: Soft Matter Physics in a Geophysical Context |
| 273 | Densest Packings of Binary Frictional Particles | Silbert, Leo; Srivastava, Ishan; Roberts, Scott; Grest, Gary; Lechman, Jeremy | Using a pressure-controlled discrete element method, implementing a highly efficient neighbor-detection algorithmic scheme, we have generated a large number of binary sphere-packings spanning a wide range in particle size ratio and filling fraction of small particles, over several orders of magnitude in particle friction coefficient. | Session 18: Soft Matter Physics in a Geophysical Context |
| 274 | Slow dynamic nonlinear elasticity in novel systems | Yoritomo, John; Weaver, Richard | Slow dynamic nonlinear elasticity in novel systems | Session 18: Soft Matter Physics in a Geophysical Context |
| 275 | The lifetime of charge on a lofted particle | Harvey, Dana; Mendez, Joshua; Huang, Tianshu; McGrath, Jake; Burton, Justin | Here we use an acoustic radiation trap to levitate and measure the net charge on isolated, millimetric particles for days. | Session 18: Soft Matter Physics in a Geophysical Context |
| 276 | Emergent colloidal currents generated via exchange dynamics in a broken dimer state | Massana Cid, Helena; Ortiz ambriz, Antonio; Tierno, Pietro | In this talk I will describe a general strategy to assemble and transport polarizable microparticles in fluid media through combination of confinement and magnetic dipolar interactions. | Session 19: Steerable Particles: New Ways to Manipulate Fluid-Mediated Forces |
| 277 | Microrollers maneuvering complex geometries | Blackwell, Brendan; Driscoll, Michelle | We study this problem experimentally using a system which consists of weakly magnetic colloids suspended in water, and driven by a rotating magnetic field. | Session 19: Steerable Particles: New Ways to Manipulate Fluid-Mediated Forces |
| 278 | Steering Active Colloids | Ebbens, Stephen; Kirvin, Alice; Archer, Richard; Gregory, David; Campbell, Andrew | Consequently a long held aim is to develop methods to harness this motion more effectively in order to steer the colloids towards particular targets. | Session 19: Steerable Particles: New Ways to Manipulate Fluid-Mediated Forces |
| 279 | Settling of shaped solids | Menon, Narayanan | Here I will present experimental and theoretical results that show qualitatively new behaviour when the particles have non-trivial shape and orientational degrees of freedom, as do snowflakes, plankton, crystals, and other natural sediment. | Session 19: Steerable Particles: New Ways to Manipulate Fluid-Mediated Forces |
| 280 | Analyzing the dynamics and structure of non-uniform spheroids in graviational sedimentation | Nissanka, Kavinda; Ma, Xiaolei; Burton, Justin | In a suspension of many particles, a linear stability analysis shows particles with a non-uniform mass density will self-organize into hyperuniform structures via an effective repulsive force (Goldfriend et al., Phys. | Session 19: Steerable Particles: New Ways to Manipulate Fluid-Mediated Forces |
| 281 | 3D printed viscotactic microswimmers | Ouhajji, Samia; Kraft, Daniela | We have started with the fabrication of trimers on the micrometre scale, the simplest form of a nonuniaxial body shape. | Session 19: Steerable Particles: New Ways to Manipulate Fluid-Mediated Forces |
| 282 | Low Reynolds number locomotion in truncated superparamagnetic membranes | Brisbois, Chase; Olvera De La Cruz, Monica | We show how the membrane actuation is controlled by dimensionless parameters that depend on the magnitude, angle and frequency of precessing magnetic fields to induce circumferential and radial membrane waves. | Session 19: Steerable Particles: New Ways to Manipulate Fluid-Mediated Forces |
| 283 | Steering toward the crowd: Orientational interactions induce active phase separation | Alert, Ricard; Zhang, Jie; Yan, Jing; Wingreen, Ned; Granick, Steve | In this talk, I will present a new mechanism for MIPS, which is based not on central forces but on torques. | Session 19: Steerable Particles: New Ways to Manipulate Fluid-Mediated Forces |
| 284 | Strategies for Steering Self-Propelled Active Particles | Das, Sambeeta | Here we will discuss two strategies of steering catalytic particles namely their interactions with boundaries and the use of external fields. | Session 19: Steerable Particles: New Ways to Manipulate Fluid-Mediated Forces |
| 285 | Simulations, experiments and applications with streaming lattices | Parthasarathy, Tejaswin; Bhosale, Yashraj; Vishwanathan, Giridar; Juarez, Gabriel; Gazzola, Mattia | Here, we present numerical predictions and experimental verifications of steady streaming realized in a periodic lattice of cylinders with alternating curvatures. | Session 19: Steerable Particles: New Ways to Manipulate Fluid-Mediated Forces |
| 286 | Capture of Capsular Bacteria from Flow via Polymer Depletion | Santore, Maria; Niu, Wuqi | We demonstrate here that E cells can be immobilized on otherwise non-adhesive surfaces through the introduction of a non-adsorbing polyethylene oxide polymer. | Session 19: Steerable Particles: New Ways to Manipulate Fluid-Mediated Forces |
| 287 | Three-Step Relaxation in Stabilized Dense Suspensions | Griese, Andrew; Cho, Jae Hyung; Peters, Ivo; Bischofberger, Irmgard | We find three distinct relaxation regimes; a rapid high stress decay followed by two exponential decay regimes. | Session 20: Suspensions Dynamics |
| 288 | Fluid rheological effects on dielectrophoretic focusing and trapping of particles in a constricted microchannel | Bentor, Joseph; Malekanfard, Amirreza; Xuan, Xiangchun | This work reports an experimental study of the individual and combined effects of fluid elasticity and shear thinning on particle manipulation through a constricted microchannel. | Session 20: Suspensions Dynamics |
| 289 | Effects of Brownian diffusion on dynamics of concentrated suspensions of ideally conductive particles in an electric field | Mirfendereski, Siamak; Park, Jae Sung | To this end, we use a large-scale numerical simulation to study the dynamics of ideally conductive Brownian particles in a suspension placed in a uniform electric field. | Session 20: Suspensions Dynamics |
| 290 | Measuring the Dynamic Material Properties of Drying Paint through Microrheology | Roffin, Maria Chiara; Wirth, Christopher; Barancyk, Steven; Rock, Reza; Gilchrist, James | Different methods are used to eliminate these effects, such as de-drifting algorithms, where the mean displacements were subtracted from a particle’s trajectory, or calculating the relative mean squared displacement (rMSD), where fluctuations of particles’ position are tracked in separation distance rather than absolute MSD. | Session 20: Suspensions Dynamics |
| 291 | Time dependence of advection-diffusion coupling for nanoparticle ensembles | Vilquin, Alexandre; Bertin, Vincent; Soulard, Pierre; Guyard, Gabriel; Raphael, Elie; Restagno, Frederic; Salez, Thomas; McGraw, Joshua | Here by using evanescent wave microscopy, we make time-dependent, nanometrically-resolved particle dispersion measurements varying particle size, velocity gradient, and viscosity in a submicrometric flow domain. | Session 20: Suspensions Dynamics |
| 292 | Pattern formation in localized photo-bioconvection | Ramamonjy, Aina; Dervaux, Julien; Brunet, Philippe | In the present study, we show that when the beam width is wider than the suspension depth, the concentration field exhibits remarkable symmetry breakings. | Session 20: Suspensions Dynamics |
| 293 | Multi-scale dynamics of colloidal deposition and erosion in porous media | Bizmark, Navid; Schneider, Joanna; Priestley, Rodney; Datta, Sujit | Using confocal microscopy, we directly visualize this process in situ and thereby identify the fundamental mechanisms by which particles are distributed throughout a medium. | Session 20: Suspensions Dynamics |
| 294 | Squeezing multiple soft particles into a constriction: transition to clogging | Bielinski, Clément; Aouane, Othmane; Harting, Jens; Kaoui, Badr | Squeezing multiple soft particles into a constriction: transition to clogging | Session 20: Suspensions Dynamics |
| 295 | Collective Dynamics of Multicellular Magnetotactic Bacteria | Petroff, Alexander; Roque, Benjamin; Rosselli, Alejandra | Here we examine how physical interactions between cells in a proto-multicellular aggregate allow them to coordinate their growth and motion before the evolution of shared chemical signaling pathways. | Session 21: Swimming, Motility, and Locomotion |
| 296 | Adaptive cell-cell communication enhances bacterial chemotaxis | Saha, Soutick; Fancher, Sean; Mugler, Andrew | Using mathematical modeling and computer simulation, we find that sufficiently strong communication succeeds in keeping a population of bacteria together, but actually slows down chemotaxis. | Session 21: Swimming, Motility, and Locomotion |
| 297 | A proprioceptive mechanism for swimming | Sánchez Rodríguez, Jesús; Raufaste, Christophe; Argentina, Mederic | We aim at addressing the mechanisms providing swimming locomotion driven by proprioception. | Session 21: Swimming, Motility, and Locomotion |
| 298 | Single proton torque generation in Escherichia coli | Jung, Ilyong | Single proton torque generation in Escherichia coli | Session 21: Swimming, Motility, and Locomotion |
| 299 | Substrate Stiffness tunes the dynamics of polyvalent rolling motors | Korosec, Chapin; Jindal, Lavisha; Schneider, Mathew; Calderon de la Barca, Igacio; Zuckermann, Martin; Forde, Nancy; Emberly, Eldon | In this talk I will discuss our recent findings that substrate stiffness influences the motor-like properties (eg. | Session 21: Swimming, Motility, and Locomotion |
| 300 | Strong Confinement of Swarming Bacteria on Surfaces | Gudavadze, Irakli; Florin, Ernst-Ludwig | Here we present a novel method for measuring film thickness with tens of nanometer precision. | Session 21: Swimming, Motility, and Locomotion |
| 301 | A Traveling-Wave Solution for Bacterial Chemotaxis with Growth | Narla, Avaneesh; Cremer, Jonas; Hwa, Terence | We analyze a simplified version of the GE model introduced by Cremer and Honda et al. which identified distinct roles played by chemotaxis and cell growth. | Session 21: Swimming, Motility, and Locomotion |
| 302 | Efficient bio-inspired swimming with hybrid actuation | Demirer, Ersan; Oshinowo, Oluwafikayo; Alexeev, Alexander | We show that the combined actuation can be tuned to work in synergy yielding thrust and efficiency that outperform each of actuation methods. | Session 21: Swimming, Motility, and Locomotion |
| 303 | A Novel Rheotaxis-based Microfluidic Device for Selecting Sperm from Semen Infected with Viruses | Ataei, Afrouz; Kabir, Md Alamgir; Lau, Andy; Asghar, Waseem | The objective of this study is to show that the presented rehotaxis-based microfluidic device is capable of washing out the sperm cells during the process of selecting healthy sperm for assisted reproductive technology (ART). | Session 21: Swimming, Motility, and Locomotion |
| 304 | Dynamic markers of C. elegans locomotion in three dimensions | Zhang, Susannah; Baker, Asia; Canavan, Katherine; Magnes, Jenny; Hastings, Harold | We characterize some key features of the locomotion of Caenorhabditis elegans ( C. elegans) in its natural (3D) environment. | Session 21: Swimming, Motility, and Locomotion |
| 305 | Centipede locomotion on rough terrain | Erickson, Eva; Diaz, Kelimar; Carruthers, Alexandra; Ozkan-Aydin, Yasemin; Chong, Baxi; Goldman, Daniel | Centipede locomotion on rough terrain | Session 21: Swimming, Motility, and Locomotion |
| 306 | Wiggling organisms use geometry to swim in curved spaces | Day, Brian; Matsumoto, Elisabetta | Using an implicit integrator, we investigate the dynamics produced by the deformation cycles of quasi-rigid deformable bodies for select 3D riemannian manifolds. | Session 21: Swimming, Motility, and Locomotion |
| 307 | Negative bacterial chemotaxis induced by surface interaction | Esparza Lopez, Christian; Lauga, Eric | In this study we explore theoretically the effects of near-surface swimming on E. coli chemotaxis in the small gradient regime. | Session 21: Swimming, Motility, and Locomotion |
| 308 | Scattering of a fast-swimming bacterium off of a surface | McDonough, Schuyler; Roque, Benjamin; Petroff, Alexander | Here we present the first experimental observations of the scattering of a fast-swimming bacterium off a flat surface. | Session 21: Swimming, Motility, and Locomotion |
| 309 | Hydrodynamic interactions in bundles of bacterial flagella | Tatulea-Codrean, Maria; Lauga, Eric | We will present novel theoretical findings regarding the effect of inter-filament hydrodynamic interactions on thrust generation and synchronization in bundles of bacterial flagella. | Session 21: Swimming, Motility, and Locomotion |
| 310 | Viscous and Viscoelastic fingering | Albreiki, Fahed; Kubinski, Alexander; Rathore, Prerana; Rasmussen, Andrew; Sharma, Vivek | In this contribution, we examine the influence of viscoelasticity on onset and evolution of fingering instabilities, by utilizing model viscoelastic fluids with rate-independent shear viscosity. | Session 22: Thin Films |
| 311 | Viscoelasticity and dynamics of nanoconfined water by atomic force microscopy | Hoffmann, Peter; Kramkowski, Edward; Khan, Shah | Here we will present an overview of our findings, including the observation of dynamic solidification, the effect of ions on ordering and dynamics, and the recent observation of the compression rate dependence of the effective viscosity. | Session 22: Thin Films |
| 312 | Phase Separation of 5CB Liquid Crystal Droplets in the Self-assembling Protein Drops via Evaporative Drying | Pal, Anusuya; Iannacchione, Germano | This presentation aims to show how a series of simple experiments can easily track the complex physical behavior. | Session 22: Thin Films |
| 313 | Impact of the wetting length on flexible blade coating | Krapez, Marion; Gauthier, Anais; Kellay, Hamid; Boitte, Jean-Baptiste; Aubrun, Odile; Jean-Francois, Joanny; Colin, Annie | We study a common industrial problem: the spreading of a Newtonian fluid by a deformable blade, which is also paradigmatic of elasto-hydrodynamic interactions. | Session 22: Thin Films |
| 314 | Dynamics of Tail Free Liquid Crystals | Powers, Mitch; Guragain, Parikshit; Li, Zhe; Twieg, Robert; Portman, John; Ellman, Brett | Here we consider a recently discovered set of isomeric tail free compounds, including several which are DLC’s despite lacking the tails which are generally considered to be a requirement. | Session 22: Thin Films |
| 315 | Effect of Molecular Interactions in Thermocapillarity-Driven Flows | Maza-Cuello, Martin; Talini, Laurence; Fretigny, Christian | Within the frame of the lubrication approximation, we show that gravity and Laplace pressures are negligible in these ultra-thin regions, leaving the disjoining pressure as the sole contribution opposing the thermocapillarity stress. | Session 22: Thin Films |
| 316 | Interfacial slip of liquids along graphene: effects of layering and substrate-induced doping | Greenwood, Gus; Kim, Jin Myung; Zheng, Qianlu; Nahid, Shahriar; Nam, SungWoo; Espinosa-Marzal, Rosa | In this investigation we use atomic force microscopy (AFM) to directly measure hydrodynamic, solvation, and frictional forces along substrate supported graphene in seven liquids. | Session 22: Thin Films |
| 317 | Rising and breakup of air in viscous fluids in confined space | Okumura, Ko | Recently, we have explored various issues on this, from which we pick up latest three. | Session 22: Thin Films |
| 318 | Breakup of a thin air film surrounded by viscous liquid: derivation of self-similar solutions | Miyabe, Yuka; Okumura, Ko | In this study, we successfully derive the self-similar solution from the Navier-Stokes equations, extending a method developed for the axisymmetric breakup [2]. | Session 22: Thin Films |
| 319 | A smectic liquid crystal Langmuir film at the air/water interface: boundaries, thermodynamics and dynamics | Alwusaydi, Huda; Visco, Angelo; Mann, J.; Mann, Elizabeth | We connect the line tension associated with the boundary to boundary structure and use the association to suggest effective line-active agents, to control the line tension and thus the domain size distribution, shape and dynamics. | Session 22: Thin Films |
| 320 | Effect of Interfacial Thermal Transport on Water Flow in Graphene Nanochannels | Becerra, Diego; Walther, Jens; Zambrano, Harvey | Here, we study the role of the underlying substrate on interfacial heat transport in graphene nanochannels. | Session 22: Thin Films |
| 321 | Super-Resolution Optical Imaging of Depletion Layer Dynamics | Shakya, Anisha; Park, Seong Jun; King, John | We developed a novel adaptation of super-resolution microscopy based on stimulated emission depletion (STED) to provide a real-space measurement of depletion layer composition and dynamics of a polyelectrolyte solution under flow with spatial resolution on the order of 50 nm. | Session 22: Thin Films |
| 322 | Drainage of protein foams and foam films | Hassan, Lena; Xu, Chenxian; Sharma, Vivek | In this study, we characterize the drainage of protein-based foams as well as single foam films, and contrast their behavior with micellar foams formed with small molecular surfactants above the critical micelle concentration. | Session 22: Thin Films |
| 323 | Exact coherent structures in purely elastic turbulence | Morozov, Alexander | In this talk I will discuss our recent attempts to generalise the Newtonian theory of the transition to turbulence to the purely elastic case. | Session 23: Transitional Flows & Nonlinear Dynamics |
| 324 | Non-asymptotic elastoinertial turbulence for asymptotic drag reduction | Zhu, Lu; Xi, Li | Non-asymptotic elastoinertial turbulence for asymptotic drag reduction | Session 23: Transitional Flows & Nonlinear Dynamics |
| 325 | Phase diagram of transitional pipe flow turbulence from a three trophic-level stochastic predator-prey model | Wang, Xueying; Shih, Hong-Yan; Goldenfeld, Nigel | Here, we extend the earlier model and include the neglected stream-wise interactions. | Session 23: Transitional Flows & Nonlinear Dynamics |
| 326 | 3D Visualization of Reconnections in Vortex Ring Collision | Newbolt, Joel; McKeown, Ryan; Rubinstein, Shmuel | 3D Visualization of Reconnections in Vortex Ring Collision | Session 23: Transitional Flows & Nonlinear Dynamics |
| 327 | Vortex bursting on a vortex tube with initial core-size perturbations | Ji, Lingbo; Van Rees, Willem | In this talk we examine vortex bursting using numerical simulations on straight vortex tubes with initial perturbations. | Session 23: Transitional Flows & Nonlinear Dynamics |
| 328 | Proper Orthogonal Decomposition of a wing-tip vortex | Garrido-Martin, Manuel; Aguilar-Cabello, Jorge; Gutierrez-Castillo, Paloma | Proper Orthogonal Decomposition of a wing-tip vortex | Session 23: Transitional Flows & Nonlinear Dynamics |
| 329 | On Quantum Vortex Field Equation and Exact Solutions | Luan, Zhi an | The exact solutions describe deformations of quantum gravity. | Session 23: Transitional Flows & Nonlinear Dynamics |
| 330 | Imaging Fluorescence of He2* Excimers Created by Neutron Capture in Liquid He II—a New Approach for Turbulent Flow Research | Wen, Xin; Bao, Shiran; McDonald, Landen; Pierce, Josh; Greene, Geoffrey; Crow, Morris; Tong, Xin; Mezzacappa, Anthony; Glasby, Ryan; Guo, Wei; Fitzsimmons, Michael | We show unequivocal evidence for formation of excimers in liquid He II created by ionizing radiation produced through neutron capture. | Session 23: Transitional Flows & Nonlinear Dynamics |
| 331 | Creation of an isolated turbulent blob sustained by vortex ring injection | Matsuzawa, Takumi; Mitchell, Noah; Perrard, Stephane; irvine, william | We experimentally study a steady, localized blob of turbulence generated and sustained by the collision of multiple vortex rings. | Session 23: Transitional Flows & Nonlinear Dynamics |
| 332 | Helicity and its Geometric Evolution in Viscous Vortex Loops | Morton, Robert; Zhao, Xinran; Kedia, Hridesh; peralta-salas, daniel; Scalo, Carlo; irvine, william | We present an analytic model for helicity evolution in vortex tubes with a natural geometric interpretation and compare its predictions to experiments and simulations. | Session 23: Transitional Flows & Nonlinear Dynamics |
| 333 | Experimental Investigation of Turbulent Non-reacting flow in a Double Swirl-stabilized Burner | Sellan, Dhanalakshmi; Balusamy, Saravanan | Experimental Investigation of Turbulent Non-reacting flow in a Double Swirl-stabilized Burner | Session 23: Transitional Flows & Nonlinear Dynamics |