Collective behaviour of active-particle suspensions (INVITED)

Abstract eng:
Active, self-propelled particles in suspension generically exhibit motility-induced clustering and phase-separation. A closer look reveals a pronounced dependence on particle shape and alignment interactions, hydrodynamic interactions, and noise strength. Mesoscale simulations of large ensembles of such particles help to unravel the complex dynamical behaviors of such systems. A rich variety of emergent collective behaviors is observed, ranging from motile polar clusters to jets, swirls, and travelling fronts.

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