电磁力驱动的微流体无阀泵

V. Dau, T. X. Dinh, Q. Nguyen, R. Amarasinghe, Katsuhiko Tanaka, S. Sugiyama
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引用次数: 15

摘要

本文研究了一种由嵌入PDMS膜片的永磁体电磁力驱动的位移式无阀微型泵。本发明的泵的网络通道包括在泵室前面形成交集的两个入口通道和一个出口通道。研究了两种不同进口通道结构的泵的设计。一种是绕泵腔弯曲的进口结构(I型),另一种是直通道结构(II型)。两种泵都是一层结构。数值模拟结果表明,ⅰ型射流产生的流量大于ⅱ型射流。然而,在隔膜的小挠度下,两泵之间的流量差异不大。当挠度变大时,I型泵的性能明显优于II型。采用微机电系统(MEMS)技术制作了I型,并进行了实验研究。该泵的基本特性已得到验证。在驱动频率为30Hz,施加电流为35ma时,流速可达1.2 mL/min。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Microfluidic valveless pump actuated by electromagnetic force
This paper presents the study on displacement valveless micropump which is actuated by electromagnetic force on a permanent magnet embedded in PDMS diaphragm. The network channel of the present pump includes two inlets and one outlet channels forming an intersection in front of a pump chamber. Two designs of the pump with different structure of the inlet channels are investigated. One structure of the inlet is curved around the pump chamber (type I) and the other is straight channels (type II). Both types of pump are in one layer structure. The numerical simulation results show that Type I produces larger flow rate than that of Type II. However, at small deflection of the diaphragm, the difference in flow rates between two pumps is not much. Type I shows a clear advance pump performance in comparison with Type II when deflection becomes large. Type I has been fabricated by MEMS technology for experiment study. The fundamental characteristics of the pump have been validated. The flow rate of up to 1.2 mL/min was obtained at driven frequency of 30Hz and applied current of 35 mA.
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