DIFFUSION PAST AN ENTROPY BARRIER

被引：459

作者：

ZWANZIG, R

机构：

[1] Laboratory of Chemical Physics, National Institute for Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1992年 / 96卷 / 10期

关键词：

D O I：

10.1021/j100189a004

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：

Diffusion in a tube or channel of varying cross section has been treated, by Fick and Jacobs, as one-dimensional diffusion past an entropy barrier determined by the tube cross-sectional area or channel width. The Fick-Jacobs diffusion equation is rederived, along with corrections involving the curvature of the tube or channel. On comparison with two exactly solvable examples, the Fick-Jacobs equation appears to be quite reliable as long as the curvature is not too great.

引用

页码：3926 / 3930

页数：5

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