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)
    JournalJournal of Physics: Condensed Matter
    Volume12
    Issue number8 A
    StatePublished - 2000

    Fingerprint

    colloids
    Suspensions
    Mean field theory
    attraction
    interactions
    Electrolytes
    electrolytes
    Glass
    glass

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Electronic, Optical and Magnetic Materials

    Cite this

    When like charges attract : Interactions and dynamics in charge-stabilized colloidal suspensions. / Grier, David G.

    In: Journal of Physics: Condensed Matter, Vol. 12, No. 8 A, 2000.

    Research output: Contribution to journalArticle

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