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Effective interaction of nonuniformly charged colloid spheres in a bulk electrolyte.

Authors
  • Lian, Z J
  • Ma, H R
Type
Published Article
Journal
The Journal of chemical physics
Publication Date
Sep 14, 2007
Volume
127
Issue
10
Pages
104507–104507
Identifiers
PMID: 17867761
Source
Medline
License
Unknown

Abstract

The interaction energy between two like-charged colloid spheres with nonuniformly distributed surface charges immersed in a bulk electrolyte is calculated under the linearized Poisson-Boltzmann equation. The calculated results are sensitive to the relative orientations of the spheres due to the anisotropy of the distribution of charges on the sphere surface. The effective repulsive interaction after thermal average is weaker than the case when charges are uniformly distributed on the spheres, and with the increase of the nonuniformity, an attractive interaction between the two spheres emerges.

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