Volume 69, Number 4, February 2005
|Page(s)||517 - 523|
|Published online||14 January 2005|
Paradoxical directed diffusion due to temperature anisotropies
Universität Bielefeld, Fakultät für Physik Universitätsstraße 25, 33615 Bielefeld, Germany
Accepted: 14 December 2004
An analytically tractable, but still experimentally realistic model dynamics is investigated, describing the Brownian motion of a particle in a “meandering” periodic potential landscape under the simultaneous influence of two different heat baths. The main characteristics of the resulting far-from-equilibrium environment is an anisotropy of the ambient temperature. When an external static force F is applied, the particle moves in the direction opposite to that force (absolute negative mobility), and this even for arbitrarily large forces . Moreover, even when the “meandering” potential exhibits a broken spatial symmetry, no preferential direction of motion arises for .
PACS: 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 05.60.-k – Transport processes / 02.50.Ey – Stochastic processes
© EDP Sciences, 2005
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.