Light-driven three-dimensional rotational motion of dandelion-shaped microparticles

Hagay Shpaisman, David B. Ruffner, David G. Grier

    Research output: Contribution to journalArticle

    Abstract

    Chemically synthesized colloidal particles featuring large-scale surface asperities can be trapped and manipulated in fluid media through holographic optical trapping. Light scattering by these particles' surface features provides a mechanism for holographic optical traps also to exert torques on them, thereby setting them in steady rotation about arbitrary axes in three dimensions. When pairs of rotating particles are brought close enough that their surface features mesh, they form microscopic gear trains. These micro-opto-mechanical systems can be arranged in any desired three-dimensional configuration.

    Original languageEnglish (US)
    Article number071103
    JournalApplied Physics Letters
    Volume102
    Issue number7
    DOIs
    StatePublished - Feb 18 2013

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    microparticles
    torque
    mesh
    light scattering
    trapping
    traps
    fluids
    configurations

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

    Light-driven three-dimensional rotational motion of dandelion-shaped microparticles. / Shpaisman, Hagay; Ruffner, David B.; Grier, David G.

    In: Applied Physics Letters, Vol. 102, No. 7, 071103, 18.02.2013.

    Research output: Contribution to journalArticle

    Shpaisman, Hagay ; Ruffner, David B. ; Grier, David G. / Light-driven three-dimensional rotational motion of dandelion-shaped microparticles. In: Applied Physics Letters. 2013 ; Vol. 102, No. 7.
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