We use a pair of orthogonal tracking beams to track and analyze the Brownian motion of a micro-particle or a living cell trapped in optical tweezers to map the three-dimensional optical force field on these samples. For optical trapping with λ = 532nm, NA = 0.85, and total power = 100mW, the axial and the transverse spring constants are around 1x10-8N/m and 2x10-8N/m, respectively for a silica particle (diameter = 2.58 μm), and 3x10-8N/m and 2x10-7N/m, respectively for a Chinese hamster ovary cell (diameter ∼15 μm).


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    Titel :

    Mapping of Three-Dimension Optical Force Field on Micro-particle in Optical Tweezers


    Beteiligte:
    Ming-Tzo Wei, (Autor:in) / Karmenyan, A. (Autor:in) / Arthur Chiou, (Autor:in)


    Erscheinungsdatum :

    2005-01-01


    Format / Umfang :

    188403 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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