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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


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
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Provided by: PubMed Central
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