UNDULATIONS OF CHARGED MEMBRANES

被引：50

作者：

FOGDEN, A ^{[1
]}

MITCHELL, DJ ^{[1
]}

NINHAM, BW ^{[1
]}

机构：

[1] AUSTRALIAN NATL UNIV,INST ADV STUDIES,DEPT APPL MATH,CANBERRA,ACT 2600,AUSTRALIA

来源：

LANGMUIR | 1990年 / 6卷 / 01期

关键词：

D O I：

10.1021/la00091a024

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The electrostatic contribution to the change in free energy of an isolated charged planar membrane when it undergoes a small sinusoidal undulation is calculated by using the nonlinear Gouy-Chapman theory for the diffuse double layer. The result is compared with Helfrich's phenomenological formula for the elastic free energy of curvature of fluid membranes. The latter is found to hold only for wavelengths large compared to the Debye-Höckel screening length. Consequently, Helfrich's formula is not valid in the limit of counterions only (no added salt). In practice, this is the situation most often encountered with ionic systems. © 1990, American Chemical Society. All rights reserved.

引用

页码：159 / 162

页数：4

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