Unjamming and emergent nonreciprocity in active ploughing through a compressible viscoelastic fluid.

ABSTRACT: A dilute suspension of active Brownian particles in a dense compressible viscoelastic fluid, forms a natural setting to study the emergence of nonreciprocity during a dynamical phase transition. At these densities, the transport of active particles is strongly influenced by the passive medium and shows a dynamical jamming transition as a function of activity and medium density. In the process, the compressible medium is actively churned up - for low activity, the active particle gets self-trapped in a cavity of its own making, while for large activity, the active particle ploughs through the medium, either accompanied by a moving anisotropic wake, or leaving a porous trail. A hydrodynamic approach makes it evident that the active particle generates a long-range density wake which breaks fo

SUBMITTER: Banerjee JP 

PROVIDER: S-EPMC9352703 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature