9 papers
Anisotropic Diffusion in Lyotropic Chromonic Liquid Crystal using Fluorescence Recovery After Photobleaching
Kyu Hwan Choi, Jiyong Cheon, Joonwoo Jeong +1
Anisotropic diffusion governs transport in a wide range of soft and biological materials, where microstructure and molecular interactions jointly shape how matter moves. Here, we q…
Colloidal hydrodynamic interactions in viscoelastic fluids
Dae Yeon Kim, Sachit G. Nagella, Saksham Malik +4
The motion of suspended colloidal particles generates fluid disturbances in the surrounding medium that create interparticle interactions. While such colloidal hydrodynamic interac…
Phase field model for viscous inclusions in anisotropic networks
Aakanksha Gubbala, Anika M. Jena, Daniel P. Arnold +1
The growth of viscous two-dimensional lipid domains in contact with a viscoelastic actin network was recently shown to exhibit unusual lipid domain ripening due to the geometry and…
Direct experimental measurement of many-body hydrodynamic interactions with optical tweezers
Dae Yeon Kim, Sachit G. Nagella, Kyu Hwan Choi +1
Many-body hydrodynamic interactions (HIs) play an important role in the dynamics of fluid suspensions. While many-body HIs have been studied extensively using particle simulations,…
Learning Continuum-level Closures For Control of Interacting Active Particles
Titus Quah, Sho C. Takatori, James B. Rawlings
Active matter swarms -- collectives of self-propelled particles that could self-assemble, ferry microscopic cargo, or endow materials with dynamic properties -- remain hard to stee…
Lipid membrane domains control actin network viscoelasticity
Daniel P. Arnold, Sho C. Takatori
The mammalian cell membrane is embedded with biomolecular condensates of protein and lipid clusters, which interact with an underlying viscoelastic cytoskeleton network to organize…
Dynamic Surfactants Drive Anisotropic Colloidal Assembly
Yaxin Xu, Prabhat Jandhyala, Sho C. Takatori
Colloidal building blocks with re-configurable shapes and dynamic interactions can exhibit unusual self-assembly behaviors and pathways. In this work, we consider the phase behavio…
Motility Modulates the Partitioning of Bacteria in Aqueous Two-Phase Systems
Jiyong Cheon, Kyu Hwan Choi, Kevin J. Modica +3
We study the partitioning of motile bacteria in an aqueous two-phase mixture of dextran (DEX) and polyethylene glycol (PEG), which can phase separate into DEX-rich and PEG-rich pha…
Dynamic swarms regulate the morphology and distribution of soft membrane domains
Aakanksha Gubbala, Daniel P. Arnold, Anika Jena +2
We study the dynamic structure of lipid domain inclusions embedded within a phase-separated reconstituted lipid bilayer in contact with a swarming flow of gliding filamentous actin…