Sorting mesoscopic objects with periodic potential landscapes: Optical fractionation

K. Ladavac, K. Kasza, D. G. Grier

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Viscously damped objects driven through a periodically modulated potential energy landscape can become kinetically locked in to commensurate directions through the landscape, and thus can be deflected away from the driving direction. We demonstrate that the threshold for an object to become kinetically locked in to an array can depend exceptionally strongly on its size. When implemented with an array of holographic optical tweezers, this process provides the basis for a continuous and continuously optimized sorting technique for mesoscopic objects called “optical fractionation.”.

    Original languageEnglish (US)
    Number of pages1
    JournalPhysical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
    Volume70
    Issue number1
    DOIs
    StatePublished - 2004

    ASJC Scopus subject areas

    • Statistical and Nonlinear Physics
    • Statistics and Probability
    • Condensed Matter Physics

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