Regensburg 2013 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 35: Brownian Motion and Transport

DY 35.3: Vortrag

Freitag, 15. März 2013, 10:00–10:15, H48

Brownian Transport in corrugated narrow channels - inertia effects — •Gerhard Schmid and Peter Hänggi — Universität Augsburg

The transport of Brownian particles through corrugated narrow channels is investigated [1,2]. Interestingly, inertial contributions to the particle dynamics cannot be neglected a priori. Especially, for widths of the channel’s bottlenecks smaller than an appropriate particle diffusion length determined by the channel’s geometrical parameters and the strength of the forcing, the Smoluchowski approximation breaks down and inertial effects come into play. The inertia corrections to the transport quantifiers, mobility, and diffusivity markedly differ for smoothly and sharply corrugated channels [2].

[1] P.S. Burada, P. Hänggi, F. Marchesoni, G. Schmid, and P. Talkner, ChemPhysChem 10, 45 (2009).

[2] P.K. Ghosh, P. Hänggi, F. Marchesoni, F. Nori, and G. Schmid, Phys. Rev. E 86, 021112 (2012).