One-dimensional optical thermal ratchets

Sang Hyuk Lee, David G. Grier

    Research output: Contribution to journalArticlepeer-review


    The ability to rectify Brownian forces with spatially extended time-varying light fields creates new opportunities for studying the statistical properties of thermal ratchet models and to exploit these models' interesting and useful properties for practical applications. This paper describes experimental studies of one-dimensional thermal ratchets implemented with the holographic optical trapping technique applied to fluid-borne colloidal spheres. These studies demonstrate the complementary roles of global spatiotemporal symmetry and local dynamics in establishing the direction of ratchet-induced motion and also highlight avenues for future advances in higher-dimensional systems.

    Original languageEnglish (US)
    Pages (from-to)S3685-S3695
    JournalJournal of Physics Condensed Matter
    Issue number47
    StatePublished - Nov 30 2005

    ASJC Scopus subject areas

    • General Materials Science
    • Condensed Matter Physics


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