Effect of eccentricity on the electroosmotic flow in an elliptic channel

被引：3

作者：

Liu, Bo-Tau ^{[1
]}

Tseng, Shiojenn ^{[2
]}

Hsu, Jyh-Ping ^{[3
]}

机构：

[1] Natl Yunlin Univ Sci & Technol, Dept Chem & Mat Engn, Touliu 64002, Yunlin, Taiwan

[2] Tamkang Univ, Dept Math, Taipei 25137, Taiwan

[3] Natl Taiwan Univ, Dept Chem Engn, Taipei 10617, Taiwan

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2015年 / 460卷

关键词：

Electroosmotic flow; Elliptic channel; Analytical solution; Mathieu functions; ELECTROKINETIC FLOW; RECTANGULAR MICROCHANNELS; LIQUID; NANOCHANNEL;

D O I：

10.1016/j.jcis.2015.08.038

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The electroosmotic flow in an elliptic channel having constant surface potential (CSP) or charge density (CSCD) is considered at low potential and arbitrary double layer thickness. Analytical expressions for the flow velocity and the corresponding asymptotic results for thick double layers that are readily applicable to experimentalists are recovered. For the range of salt concentration usually encountered in practice, the mean flow velocity for the case of CSP differs both quantitatively and qualitatively from that for the case of CSCD. Using an equivalent circular channel to simulate an elliptic one is inappropriate, in general, neither is assuming electroneutrality on the channel axis even when double layer is ca. 1/3 of the equivalent channel radius. (C) 2015 Elsevier Inc. All rights reserved.

引用

页码：81 / 86

页数：6

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