B-211 水中でのレーザトラッピングにより誘起される微粒子の流動現象

概要

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Induced motion of fine solid particle in pure water by laser trapping are discussed in this paper. The gradient force with laser irradiation pressure of focused laser beam enables to trap transparent fine particles in three dimensions. Laser trapping system contains CW YAG laser, which has 1.064 micron in wave length, optical microscope and objective lens which has 0.70 in numerical aperture. The motion of particle was observed by a CCD camera on the top of microscope and recorded by VHS connected to the CCD camera. The particle was scattered in a droplet placed on a slide glass and an electric stage was adopted in order to manipulate the particle on the slide glass. In our laser trapping system, particle rotating phenomena is observed and showed in this paper.
日本流体力学会の論文
2003-07-28