마이크로 채널 내 동일 평면 전극에 교류인가로 인한 유동특성 연구

A STUDY ON CHARACTERISTICS OF Ac ELECTRO-OSMOTIC FLOWS IN THE MICROCHANNEL WITH COPLANAR ELECTRODES

This paper presents numerical results of fluid flows and mixing in a microfluidic device for AC electroosmotic flow (AC-EOF) with coplanar electrodes on top and bottom walls. Differently from previous EOF a channel which attached a couple of coplanar electrodes can be utilized to mix a target liquid with a reagent. In this study we propose a method of controlling fluid flows and mixing enhancement. To obtain the flow and mixing characteristics, numerical computations are performed by using a commercial code, CFX10. It was found that the flow near the coplanar electrodes is of 3-D complex flows and vortices between the other electrodes, and as a consequence the AC-electroosmotic flow on the electrodes plays an important role in mixing the liquid.