Experimental and theoretical analyses of three-dimensional microflows generated by an optical mixer

Hiroo Ukita; Kosaku Takada; Yoshito Itoh

doi:10.1117/12.556645

18 October 2004 Experimental and theoretical analyses of three-dimensional microflows generated by an optical mixer

Hiroo Ukita, Kosaku Takada, Yoshito Itoh

Proceedings Volume 5514, Optical Trapping and Optical Micromanipulation; (2004) https://doi.org/10.1117/12.556645
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

A micro total analysis system (μ-TAS) is expected to reduce inspection time or the amount of reagent needed. Because of the small Reynolds number in a microchannel, mixing is performed mainly by diffusion. We have proposed an active method to stir a liquid by an optical mixer to improve efficiency. A fabricated optical mixer (SU-8, 20 μm in diameter) is secured inside a chamber at the focal point of the NA=1.4 objective lens and generates flows around it. We have analyzed the micro-liquid velocity vectors and the flux amount around three kinds of mixers (3, 4 and 5 wings) with an upward-directed YAG laser beam at different depths for both horizontal and vertical rotations.

Citation Download Citation

Hiroo Ukita, Kosaku Takada, and Yoshito Itoh "Experimental and theoretical analyses of three-dimensional microflows generated by an optical mixer", Proc. SPIE 5514, Optical Trapping and Optical Micromanipulation, (18 October 2004); https://doi.org/10.1117/12.556645

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