When like charges attract: Interactions and dynamics in charge-stabilized colloidal suspensions

David G. Grier

Research output: Contribution to journalArticle

Abstract

Measured pair interactions among highly charged colloidal spheres dispersed in simple electrolytes yield several surprises. Isolated pairs of like-charged spheres are found to repel each other, much as predicted by conventional theory. The same spheres, however, can develop a strong and long-ranged attraction for each other when confined either by charged glass walls, or by neighbouring spheres. Such like-charge attractions are inconsistent with the mean-field theory for macroionic interactions. These and other experimental observations further constrain recently proposed extensions to the mean-field theory.

Original languageEnglish (US)
Pages (from-to)A75-A84
JournalJournal of Physics Condensed Matter
Volume12
Issue number8 A
StatePublished - Dec 1 2000
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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