When like charges attract: The effects of geometrical confinement on long-range colloidal interactions

John C. Crocker, David G. Grier

    Research output: Contribution to journalArticlepeer-review

    Abstract

    High-resolution measurements of the interaction potential between pairs of charged colloidal microspheres suspended in water provide stringent tests for theories of colloidal interactions. The screened Coulomb repulsions we observe for isolated spheres agree quantitatively with predictions of the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory. Confining the same spheres between charged glass walls, however, induces a strong long-range attractive interaction which is not accounted for by the DLVO theory.

    Original languageEnglish (US)
    Pages (from-to)1897-1900
    Number of pages4
    JournalPhysical Review Letters
    Volume77
    Issue number9
    DOIs
    StatePublished - 1996

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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