Phase Separation driven by Active Flows
Phys. Rev. Lett. 130, 238201 (2023)
Abstract:
We extend the continuum theories of active nematohydrodynamics to model a two-fluid mixture with separate velocity fields for each fluid component, coupled through a viscous drag. The model is used to study an active nematic fluid mixed with an isotropic fluid. We find microphase separation, and argue that this results from an interplay between active anchoring and active flows driven by concentration gradients. The results may be relevant to cell sorting and the formation of lipid rafts in cell membranes.
Phase separation driven by active flows
Physical Review Letters American Physical Society 130:23 (2023) 238201
Abstract:
We extend the continuum theories of active nematohydrodynamics to model a two-fluid mixture with separate velocity fields for each fluid component, coupled through a viscous drag. The model is used to study an active nematic fluid mixed with an isotropic fluid. We find microphase separation, and argue that this results from an interplay between active anchoring and active flows driven by concentration gradients. The results may be relevant to cell sorting and the formation of lipid rafts in cell membranes.Triviality of quantum trajectories close to a directed percolation transition
Physical Review B American Physical Society (APS) 107:22 (2023) 224303
Spontaneous rotation of active droplets in two and three dimensions
(2023)
Arresting dynamics in hardcore spin models
Physical Review B American Physical Society (APS) 107:18 (2023) l180302