Berlin 2015 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 57: Poster - Diffusion

DY 57.1: Poster

Donnerstag, 19. März 2015, 16:00–18:00, Poster A

Mobility of colloids driven through a permeable corrugated channel — •Konstantin Zak, Robert Gernert, and Sabine H. L. Klapp — Institut für theoretische Physik, Technische Universität Berlin

Nonequilibrium transport of colloidal suspensions is an active field of research – even for the paradigmatic model of effectively one-dimensional flow through a channel with a corrugated confinement. Here we consider a non-perfect confinement where the particles may escape from the system and enter to it. This permeable confinement is modelled via a high energetic barrier between the channel and a particle bath with constant density. For the theoretical description of the overdamped, effectively one-dimensional flow of hard spheres through the channel we employ the Dynamical Density Functional Theory (DDFT). The influence of the system-bath interaction is studied in terms of mobility and density distribution of the colloids in flow direction. We also present first results concerning the generalisation of the system towards two dimensions.