Regensburg 2019 – scientific programme

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BP: Fachverband Biologische Physik

BP 6: Poster I

BP 6.6: Poster

Monday, April 1, 2019, 17:30–19:30, Poster B2

Capillary condensation forces between inclusions in an active bath — •Milos Knezevic and Holger Stark — Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany

We present a systematic study of capillary condensation forces between objects immersed in an active bath of microswimmers. We study two types of active baths, consisting of either Active Brownian particles (no hydrodynamic interactions) or spherical squirmers (with hydrodynamic interactions). Inclusions of various shapes and sizes are considered. We find that forces between inclusions can be either attractive or repulsive, depending on the density and motility of microswimmers, and the geometric properties of inclusions. We explore ways of controlling these forces, which is relevant for self-assembly.