Dresden 2020 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 57: Poster: Statistical Physics; Critical Phenomena; Stochastic Thermodynamics; Extreme Events; Data Analytics

DY 57.5: Poster

Donnerstag, 19. März 2020, 15:00–18:00, P1C

Segregation Phenomena of driven Model Colloids in two-dimensional confined Geometries — •Marc Isele, Kay Hofmann, Tobias Vater, Ullrich Siems, and Peter Nielaba — Universität, Konstanz, Deutschland

Brownian dynamics simulations were employed to investigate the segregation phenomena of driven model colloids in two-dimensional confined geometries. The interactions between the colloids were calculated with a repulsive screened Coulomb potential. In the first part, two sorts of spherical particles of different sizes were driven in the same direction. This setting was created since the corresponding experimental setups are supposedly easier to prepare than oppositely driven particles. A segregation occurred that is similar to the lane formation of oppositely driven colloids. In a second setup, a closer look was taken at oppositely driven particles in circular channels. Here, not only lane formation was observed but also a previously unknown effect of bands forming perpendicularly to the channel walls.