Phoretic Interactions Generically Induce Dynamic Clusters and Wave Patterns in Active Colloids

摘要: We introduce a representative minimal model for phoretically interacting active colloids. Combining kinetic theory, linear stability analyses, and general relation between self-propulsion phoretic interactions in autodiffusiophoretic autothermophoretic Janus colloids collapses the parameter space from six to two dimensionless parameters: area fraction Peclet number. This collapse arises when lifetime of self-generated fields is not too short, leads universal phase diagram showing that generically induce pattern formation typical colloids, even at very low density. The resulting patterns include waves dynamic aggregates closely resembling living clusters found experiments on dilute suspension