Arrested-motility states in populations of shape-anisotropic active Janus particles.

ABSTRACT: The emergence of large-scale collective phenomena from simple interactions between individual units is a hallmark of active matter systems. Active colloids with alignment-dominated interparticle interactions tend to develop orientational order and form motile coherent states, such as flocks and swarms. Alternatively, a combination of self-propulsion and excluded-volume interactions results in self-trapping and active phase separation into dense clusters. Here, we reveal unconventional arrested-motility states in ensembles of active discoidal particles powered by induced-charge electrophoresis. Combining experiments and computational modeling, we demonstrate that the shape asymmetry of the particles promotes the hydrodynamically assisted formation of active particles' bound states in a cert

SUBMITTER: Katuri J 

PROVIDER: S-EPMC10883369 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature