Simulation of charge reversal in salty environments: Giant overcharging?

被引:0
|
作者
O. Lenz
C. Holm
机构
[1] Johann-Wolfgang-Goethe-Universität,Frankfurt Institute for Advanced Studies
[2] Max-Planck-Institut für Polymerforschung,undefined
来源
The European Physical Journal E | 2008年 / 26卷
关键词
64.70.pv Colloids; 41.20.Cv Electrostatics; Poisson and Laplace equations, boundary-value problems; 87.10.Tf Molecular dynamics simulation;
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中图分类号
学科分类号
摘要
We have performed MD simulations of a highly charged colloid in a solution of 3:1 and additional 1:1 salt. The dependency of the colloid's inverted charge on the concentration of the additional 1:1 salt has been studied. Most theories predict, that the inverted charge increases when the concentration of monovalent salt grows, up to what is called giant overcharging, while experiments and simulational studies observe the opposite. Our simulations agree with the experimental findings and shed light onto the weaknesses of the theories.
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页码:191 / 195
页数:4
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