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Communications: Drift and diffusion in a tube of periodically varying diameter. Driving force induced intermittency

By Alexander M. Berezhkovskii, Leonardo Dagdug, Yurii A. Makhnovskii and Vladimir Yu. Zitserman

Abstract

We show that the effect of driving force F on the effective mobility and diffusion coefficient of a particle in a tube formed by identical compartments may be qualitatively different depending on the compartment shape. In tubes formed by cylindrical (spherical) compartments the mobility monotonically decreases (increases) with F and the diffusion coefficient diverges (remains finite) as F tends to infinity. In tubes formed by cylindrical compartments, at large F there is intermittency in the particle transitions between openings connecting neighboring compartments

Topics: Communications
Publisher: American Institute of Physics
OAI identifier: oai:pubmedcentral.nih.gov:2896416
Provided by: PubMed Central
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