Giant colloidal diffusivity on corrugated optical vortices

Sang Hyuk Lee, David G. Grier

    Research output: Contribution to journalArticle

    Abstract

    A single colloidal sphere circulating around a periodically modulated optical vortex trap can enter a dynamical state in which it intermittently alternates between freely running around the ringlike optical vortex and becoming trapped in local potential energy minima. Velocity fluctuations in this randomly switching state still are characterized by a linear Einstein-like diffusion law, but with an effective diffusion coefficient that is enhanced by more than 2 orders of magnitude.

    Original languageEnglish (US)
    Article number190601
    JournalPhysical Review Letters
    Volume96
    Issue number19
    DOIs
    StatePublished - 2006

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    trapped vortices
    diffusivity
    diffusion coefficient
    potential energy
    vortices

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Giant colloidal diffusivity on corrugated optical vortices. / Lee, Sang Hyuk; Grier, David G.

    In: Physical Review Letters, Vol. 96, No. 19, 190601, 2006.

    Research output: Contribution to journalArticle

    Lee, Sang Hyuk ; Grier, David G. / Giant colloidal diffusivity on corrugated optical vortices. In: Physical Review Letters. 2006 ; Vol. 96, No. 19.
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