Dynamics of counterion condensation

被引：10
|
作者：
Golestanian, R [1 ]
机构：
[1] Univ Calif Santa Barbara, Inst Theoret Phys, Santa Barbara, CA 93106 USA
[2] Inst Adv Studies Basic Sci, Zanjan 45195159, Iran
来源：
EUROPHYSICS LETTERS | 2000年 / 52卷 / 01期
关键词：
D O I：
10.1209/epl/i2000-00402-x
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Using a dynamical version of the Poisson-Boltzmann equation, dynamics of counterion condensation is studied. For a single charged plate in the presence of counterions, it is shown that the approach to equilibrium is diffusive. In the nonequilibrium case of a moving charged plate, a dynamical counterion condensation transition occurs at a critical velocity. The complex dynamic behavior of the counterion cloud is shown to lead to a novel nonlinear force-velocity relation, and an anomalous electrophoresis for the moving charged plate.
引用
收藏
页码：47 / 53
页数：7
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