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Shear Reversal in Dense Suspensions: The Challenge to Fabric Evolution Models from Simulation Data
Rahul N. Chacko, Romain Mari, Suzanne M. Fielding +1
Despite the industrial importance of dense suspensions of hard particles, few constitutive models for them have been proposed or tested. Most of these are effectively "fabric evolu…
Contractile and chiral activities co-determine the helicity of swimming droplet trajectories
Elsen Tjhung, Michael E. Cates, Davide Marenduzzo
Active fluids are a class of non-equilibrium systems where energy is injected into the system continuously by the constituent particles themselves. Many examples, such as bacterial…
Nonequilibrium dynamics of mixtures of active and passive colloidal particles
Raphael Wittkowski, Joakim Stenhammar, Michael E. Cates
We develop a mesoscopic field theory for the collective nonequilibrium dynamics of multicomponent mixtures of interacting active (i.e., motile) and passive (i.e., nonmotile) colloi…
Does a growing static length scale control the glass transition?
Matthieu Wyart, Michael E. Cates
Several theories of the glass transition propose that the structural relaxation time τα is controlled by a growing static length scale ξ that is determined by the free energy lands…
Spatiotemporal Self-Organization of Fluctuating Bacterial Colonies
Tobias Grafke, Michael E. Cates, Eric Vanden-Eijnden
We model an enclosed system of bacteria, whose motility-induced phase separation is coupled to slow population dynamics. Without noise, the system shows both static phase separatio…
Phoretic Interactions Generically Induce Dynamic Clusters and Wave Patterns in Active Colloids
Benno Liebchen, Davide Marenduzzo, Michael E. Cates
We introduce a representative minimal model for phoretically interacting active colloids. Combining kinetic theory, linear stability analyses, and a general relation between self-p…