Effects of Stern layer conductance on electrokinetic energy conversion in nanofluidic channels

被引：72

作者：

Davidson, Christian ^{[1
]}

Xuan, Xiangchun ^{[1
]}

机构：

[1] Clemson Univ, Dept Mech Engn, Clemson, SC 29634 USA

来源：

ELECTROPHORESIS | 2008年 / 29卷 / 05期

关键词：

Dukhin number; electrokinetic; energy conversion; figure of merit; Stern layer conductance;

D O I：

10.1002/elps.200700549

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

A thermo-electro-hydro-dynamic model is developed to analytically account for the effects of Stern layer conductance on electrokinetic energy conversion in nanofluidic channels. The optimum electrokinetic devices performance is dependent on a figure of merit, in which the Stem layer conductance appears as a nondimensional Dukhin number. Such surface conductance is found to significantly reduce the figure of merit and thus the efficiency and power output. This finding may explain why the recently measured electrokinetic devices performances are far below the theoretical predictions where the effects of Stem layer conductance have been ignored.

引用

页码：1125 / 1130

页数：6

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