Diffusion in one-dimensional channels with zero-mean time-periodic tilting forces

被引：2

作者：

Munoz-Gutierrez, E. ^{[1
]}

Alvarez-Ramirez, J. ^{[1
]}

Dagdug, L. ^{[1
]}

Espinosa-Paredes, G. ^{[1
]}

机构：

[1] Univ Autonoma Metropolitana, Div Ciencias Basicas & Ingn, Mexico City 09340, DF, Mexico

来源：

JOURNAL OF CHEMICAL PHYSICS | 2012年 / 136卷 / 11期

关键词：

OPERATION; TRANSPORT;

D O I：

10.1063/1.3693332

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We investigate the motion of overdamped Brownian particles in a one-dimensional channel under a zero-mean time-periodic tilting force F(t). By introducing a simple harmonic signal, strong enhancement of diffusion is possible for relatively large values of the Peclet number. Direct numerical simulations over the corresponding Fokker-Planck equation show that the diffusion enhancement is induced by a type of nonlinear resonance effect involving the tilting force and the density gradient. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3693332]

引用

页数：7

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