Optically induced rotation of a trapped micro-object about an axis perpendicular to the laser beam axis

E. Higurashi, R. Sawada, T. Ito

    Research output: Contribution to journalArticlepeer-review

    45 Citations (Scopus)

    Abstract

    A strongly focused Nd:YAG laser beam has been used experimentally to achieve optical trapping and simultaneous rotation of a micro-object about an axis perpendicular to the trapping laser beam axis. The micro-object (12 μm in diameter), which has shape anisotropy in its interior, can be produced by oxygen reactive ion etching of a fluorinated polyimide film (refractive index n=1.53). This optically induced rotation of the micro-object in ethanol (n=1.36) is accomplished by utilizing the net radiation pressure force arising from the momentum change of light scattered at the micro-object's inner walls.

    Original languageEnglish
    Pages (from-to)2951-2953
    Number of pages3
    JournalApplied Physics Letters
    Volume72
    Issue number23
    DOIs
    Publication statusPublished - Dec 1 1998

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)

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