화학공학소재연구정보센터
학회 한국화학공학회
학술대회 2004년 가을 (10/29 ~ 10/30, 호서대학교(아산캠퍼스))
권호 10권 2호, p.2038
발표분야 이동현상
제목 Transport of fluid by magnetically actuated micropump
초록 Conventional check-valve pumps have problems such as a high pressure drop across the valves, wear and fatigue of the movable parts and difficulty in fabrication. This work describes simple method to fabricate a valveless diffuser/nozzle-based micropump.  The diffuser/nozzle part and the pump chamber were fabricated using soft lithography and micropump was made of PDMS (poly dimethylsiloxane). The pump chamber consisted of a circular cylindrical volume (diameter: 10mm, thickness: 100μm) where the top side had the oscillating diaphragm to which a Nd/Fe/B magnet (diameter: 3mm, thickness: 1.5mm) was fixed.  An external magnetic power source provided attractive/repulsive force to induce supply/pump mode of valveless micropump. The pumping rate was of the order of 10μL/min corresponding to the frequency of 1~10Hz.
저자 김경애, 김도현
소속 한국과학기술원
키워드 micropump; microfabrication; diffuser/nozzle
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