Development of a New Type of Micro Fluidic System Using EO Pumps
This paper presents a novel micro fluidic system based on two EO (electoosmotic) pumps. This system consists of two EO pumps, one indirect pumping mechanism, and two switching valves. The indirect pumping mechanism includes two sealed chambers, one is the driving fluid chamber and the other is working fluid chamber. The EO pumps actuator make the diaphragm which separates two chambers reciprocate. So the liquid in the working fluid chamber can be pumped from inlet to outlet. Due to the large deflections of the actuator membrane, the device is completely self-filling and able to pump liquid. By using the indirect pumping mechanism, the problem of driving fluid circulation has been improved. The operation of the micropump was investigated experimentally. And a maximum flow rate of 194γl/min (using water) back-pressure 119kp was obtained by an input voltage of 20V and an exciting frequency of 1.6Hz. A close loop control system was designed to obtain stable flow rate. In this paper, the flow rate was controlled at 125γl/min and an experiment was accomplished to show the performance of the system. These experiments results demonstrate the fluidic system performance and ability to deliver the fluid and drags to LOC (laboratory-on-a-chip) for chemical analysis.
Electroosmotic Pump Micro Fluidic System Self-filling Micropump Indirect Pumping Mechanism
Wei Wei Shuxiang Guo
Harbin Engineering University Harbin,Heilongjiang Province,150001,China Kagawa University Kagawa University 2217-20,Hayashi-cho,Takamatsu,761-0396,Japan Harbin Engineering University
国际会议
2010 IEEE信息与自动化国际会议(ICIA 2010)
哈尔滨
英文
1-5
2010-06-20（万方平台首次上网日期，不代表论文的发表时间）