Berlin 2012 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 29: Posters II

DY 29.18: Poster

Donnerstag, 29. März 2012, 17:00–19:00, Poster A

One dimensional transport of colloids with attractive interactions — •Dortje Schirok, Ken Lichtner, and Sabine H.L. Klapp — Institute of Theoretical Physics, Secr. EW 7-1, Technical University Berlin - Hardenbergstr. 36, D-10623 Berlin, Germany

Considering a non-equilibrium one-dimensional system of interacting colloids in a tilted washboard potential, we find a certain flux of the center of mass along the congruent axis [1]. By adding an additional attractive part to the colloid's profile this flux is damped. In the time dependence of the mean-squared displacement we see the colloids being trapped for a certain time before going to the diffusive regime [2]. This system is examined with and without the attractive part to the colloid's potential. Furthermore we studied the effect of the potential's interaction stiffness on the transport mechanisms.

[1] K. Lichtner and S.H.L. Klapp, Europhys. Lett 92, 40007 (2010)

[2] R. Gernert, K. Lichtner, D. Schirok, S.H.L. Klapp, to be published