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Dresden 2009 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 28: Pattern formation in colloidal and granular systems II

DY 28.1: Talk

Friday, March 27, 2009, 10:15–10:30, HÜL 386

Axial segregation in oscillatory driven colloidal binary mixtures — •Adam Wysocki and Hartmut Loewen — Institut fur Theoretische Physik II: Weiche Materie, Heinrich-Heine-Universitaet Duesseldorf, Universitaetsstrasse 1, D-40225 Duesseldorf, Germany

Using computer simulations we show that binary mixtures of colloids driven in opposite directions by an oscillating external field exhibit axial segregation in sheets perpendicular to the drive direction. The segregation effect persists also for strong hydrodynamic interactions. For increasing driving forces axial segregation ceases and is taken over by lane formation in direction of the driving field.

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