Anomalous interactions in confined charge-stabilized colloid

D. G. Grier, Y. Han

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Charge-stabilized colloidal spheres dispersed in weak 1:1 electrolytes are supposed to repel each other. Consequently, experimental evidence for anomalous long-ranged like-charged attractions induced by geometric confinement inspired a burst of activity. This has largely subsided because of nagging doubts regarding the experiments' reliability and interpretation. We describe a new class of thermodynamically self-consistent colloidal interaction measurements that confirm the appearance of pairwise attractions among colloidal spheres confined by one or two bounding walls. In addition to supporting previous claims for this as-yet unexplained effect, these measurements also cast new light on its mechanism.

    Original languageEnglish (US)
    Pages (from-to)S4145-S4157
    JournalJournal of Physics Condensed Matter
    Volume16
    Issue number38
    DOIs
    StatePublished - Sep 29 2004

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics

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