電気浸透流を用いたマイクロポンプに関する基礎研究(流体工学,流体機械)
電気浸透流を用いたマイクロポンプに関する基礎研究(流体工学,流体機械)
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利用电渗流的微型泵的基础研究（流体工程、流体力学）
DOI：
10.1299/kikaib.68.2071
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
修己 鬼頭
中科院分区：
文献类型：
--
作者：
民雄 冨士原;修己 鬼頭
采用电渗流的微型泵与机械泵相比，具有体积小、易控制、无脉动等优点。然而，在机械工程和流体力学领域对电渗流的研究还不多，因为电渗流只在毛细管等微通道中可察觉，而不是在传统流体力学中使用的通道中可察觉。在这项研究中，测量了电渗透流量与通道尺寸、压力梯度和外加电场的关系。此外，还测量了沿电渗流通道的电流。电渗率与通道尺寸成正比。有些情况下，电渗流量与外加电场不成正比。受压力梯度影响的电渗流的流量与压力梯度呈线性关系。在电渗流通道中液体的主体区域中，有一个额外的电荷，该电荷在导电电流上贡献了一个额外的电流。
A micro-pump using an electroosmotic flow has some advantages over a mechanical pump in smallsizing, easy-controlling and no pulsation. The electroosmotic flow, however, has not been studied much in the field of mechanical engineering and fluid mechanics because the flow is appreciable only in a micro-channel like a capillary not but in a channel used in conventional fluid mechanics. In this study, the relations between the electroosmotic flow rate and a channel size, a pressure gradient and an applied electric field were measured. In addition, the electric current along the electroosmotic flow channel was measured. The electroosmotic flow rate is shown to be proportional to the channel size. There are cases that the electroosmotic flow rate is not proportional to the applied electric field. The flow rate of an electroosmotic flow under the influence of a pressure gradient is linear to the pressure gradient. In the bulk region of the liquid in an electroosmotic flow channel, there is an excess electric charge that contributes to an additional electric current over the conductive current.