Origin of stratification in creaming emulsions

Daniel M. Mueth, John C. Crocker, Sergei E. Esipov, David G. Grier

    Research output: Contribution to journalArticlepeer-review


    Colloidal suspensions aging under gravity have long been known to spontaneously separate into layers. We demonstrate through flow visualization experiments that a lateral temperature gradient as small as 10 mK/cm can be responsible for such stratification and that strata correspond to a stack of convection rolls. A linear stability analysis suggests that the onset of stratification results from a convective instability peculiar to fluids with inhomogeneous mass densities subjected to lateral thermal gradients.

    Original languageEnglish (US)
    Pages (from-to)578-581
    Number of pages4
    JournalPhysical Review Letters
    Issue number3
    StatePublished - 1996

    ASJC Scopus subject areas

    • General Physics and Astronomy


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