AC electroosmotic micromixer for chemical processing in a microchannel |
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Authors: | Sasaki Naoki Kitamori Takehiko Kim Haeng-Boo |
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Affiliation: | Department of Applied Chemistry, School of Engineering, The University of Tokyo, Tokyo, Japan. |
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Abstract: | A rapid micromixer of fluids in a microchannel is presented. The mixer uses AC electroosmotic flow, which is induced by applying an AC voltage to a pair of coplanar meandering electrodes configured in parallel to the channel. To demonstrate performance of the mixer, dilution experiments were conducted using a dye solution in a channel of 120 microm width. Rapid mixing was observed for flow velocity up to 12 mm s(-1). The mixing time was 0.18 s, which was 20-fold faster than that of diffusional mixing without an additional mixing mechanism. Compared with the performance of reported micromixers, the present mixer worked with a shorter mixing length, particularly at low Peclet numbers (Pe < 2 x 10(3)). |
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