Characterization of electroosmotic flow in rectangular microchannels

被引：40

作者：

Wang, Cheng ^{[1
]}

Wong, Teck Neng ^{[1
]}

Yang, Chun ^{[1
]}

Ooi, Kim Tiow ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2007年 / 50卷 / 15-16期

关键词：

theoretical model; electroosmotic; rectangular microchannel; solution displacement;

D O I：

10.1016/j.ijheatmasstransfer.2006.11.035

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this paper, the electroosmotic displacing process between two solutions (namely the same electrolyte of different concentrations) in a rectangular microchannel is studied theoretically and experimentally. Firstly, the electric potential and velocity field in a rectangular microchannel are obtained by solving the governing equations. Fourier transform method is used to solve the electrolyte concentration profile equation. The electric current versus time curve through the microchannel is predicted based on the concentration profile obtained. The current monitoring technique is then used to study the electroosmotic displacing process. The results from the measured current-time relations agree well with those from the prediction, suggesting a reliable theoretical model developed in this study. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：3115 / 3121

页数：7

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