微流道內鋸齒狀無動件閥之比較研究

蔡宗立

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微流道內鋸齒狀無動件閥之比較研究

A Comparative Study of Saw-Toothed No-Moving-Part Valves(NMPV) in Micro-Channels

蔡宗立 , Masters　　Advisor：潘大知　　

繁體中文

晶片；微流道；微機電；無動件閥； NMPV ； MEMS ； lab-on-chip ； microvalve

Abstract │ Reference (16) │ Times Cited (1) │ Altmetrics

Abstract 〈TOP〉

Parallel Abstract 〈TOP〉

This thesis compares various designs of Saw-toothed No-Moving-Part Valves (NMPV) for flows in micro-channels. NMPV is a valve design without any mechanical moving-part. The working principle of NMPV is the drag diodicity resulting from the asymmetric shape of the flow passages of the valve design. Under the same pressure difference across the valve, the flow drag is smaller in one direction (the preferred direction) than the drag in the opposite direction. This drag diodicity allows the flow passage function like a one-way check valve. Comparing with the traditional mechanical valves, a NMPV has the advantage of simplicity in both design and manufacturing, and also avoids the possible damage to fluid particles due to the on/off motion of the mechanical pump. 
This research uses Computational Fluid Dynamics as a tool to analyze designs of NMPV. In particular, the Reynolds number effect on various saw-toothed NMPV and diffuser valves are examined. It is found that in certain range of Reynolds number, the drag diodicity reversal will significantly affect the performance of a NMPV.

Reference ( 16 ) 〈TOP〉

[2] Laser, D. J., Santiago, J. G., “A Review of Micropumps,” Journal of Micromechanics and Microengineering, No.14, 2004, R35-R64.
連結：
[3] Fuhr, G., Hagedorn, R., Muller, T., Benecke, W., and Wagner, B., “Pumping of water of water solution in microfabricated electrohydrodynamic system,” Proc. IEEE-MEMS Workshop, 1992, pp. 25-29.
連結：
[4] 龔鼎琮, “氣動式雙向微流體驅動系統之研究,” 國立成功大學航空太空研究所碩士論文, 中華民國93年6月
連結：
[6] Vieider, C., Ohman, O. and Elderstig, “A Pneumatically Actuated Micro Valve with a Silicone Rubber Membrane for Integration with Fluid-Handling Systems,” Solid-State Sensors and Actuators , No. l2, 1995, pp. 284-286.
連結：
[7] Zengerle, R., Ulrich, J., Kluge, S., Richter, M., and Richter, A., “A Bidirectional Silicon Micropump,” Sensors and Actuators A, Vol. 50, 1995, pp. 81-86.
連結：

Times Cited (1) 〈TOP〉

張雲翔(2007)。微管道內鋸齒無動件閥之非定常特性研究。成功大學航空太空工程學系學位論文。2007。1-81。

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