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Measurements of Optical Trapping Efficiency for Micron-Sized Dielectric Particles in Various Surrounding Media

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Abstract

The maximum axial trapping efficiency Qmax has been measured in water, ethanol, butanol and octanol for polystyrene latex spheres having a diameter of 2–15μm. The effects of the diameter of the particle as well as the refractive index and the viscosity of surrounding medium have been investigated. For particles of d≥7 μm, Qmax is almost independent of particle size, while it decreases as the diameters decrease to d≦5 μm. It is also noted that Qmax is affected by the viscosity rather than the refractive index of the surrounding medium.

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Authors and Affiliations

  1. Department of Quantum Engineering and Systems Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113, Japan

    Ryota Omori, Tamiki Kobayashi, Shinji Miyamoto & Atsuyuki Suzuki

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  1. Ryota Omori
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  2. Tamiki Kobayashi
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  3. Shinji Miyamoto
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  4. Atsuyuki Suzuki
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Omori, R., Kobayashi, T., Miyamoto, S. et al. Measurements of Optical Trapping Efficiency for Micron-Sized Dielectric Particles in Various Surrounding Media. OPT REV 3, 11–13 (1996). https://doi.org/10.1007/s10043-996-0011-z

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  • DOI: https://doi.org/10.1007/s10043-996-0011-z

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