Electrophoresis of a spherical particle along the axis of a cylindrical pore: effect of electroosmotic flow

Journal of Colloid and Interface Science
Jyh-Ping HsuChen-Yuan Kao

Abstract

The electrophoresis of a spherical particle along the axis of a cylindrical pore is investigated under conditions of low surface potential and thick double layer. In particular, the effect of electroosmotic flow is taken into account. The results of numerical simulation reveal that if both particle and pore are positively charged, the variation of the mobility of a particle may have a local minimum as the thickness of the double layer varies, which is not reported in the literature. This is mainly due to the charge induced on the particle surface, which arises from the presence of the charged boundary. Depending upon the level of the surface potential of the pore, the presence of the local minima may lead to a reversal in the direction of particle movement as the thickness of the double layer surrounding it varies: if the surface potential is either too low or too high, reversal does not occur; if it has a medium level, reversal occurs twice. This interesting observation can play a role in electrophoresis measurements. Previous analysis predicts that reversal always occurs once, regardless of the level of the surface potential of the pore.

References

Jan 15, 1997·Journal of Colloid and Interface Science·J Ennis, J L Anderson
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Citations

Jan 14, 2011·Physical Chemistry Chemical Physics : PCCP·Ye Ai, Shizhi Qian
Jul 22, 2011·Colloids and Surfaces. B, Biointerfaces·Mingkan ZhangShizhi Qian
Apr 20, 2010·Journal of Colloid and Interface Science·Litao LiangXiangchun Xuan
Nov 26, 2009·Journal of Colloid and Interface Science·Jyh-Ping HsuShiojenn Tseng
Jul 4, 2008·Journal of Colloid and Interface Science·J P HsuAy Su
Feb 20, 2007·Journal of Colloid and Interface Science·Jyh-Ping HsuZheng-Syun Chen
Oct 31, 2006·Journal of Colloid and Interface Science·Jyh-Ping HsuMing-Hong Ku
Sep 24, 2015·Journal of Colloid and Interface Science·Yu-Wei LiuCarl D Meinhart
Sep 19, 2006·Journal of Colloid and Interface Science·Shizhi QianJuan K Afonien
Mar 23, 2011·The Journal of Physical Chemistry. B·Jyh-Ping HsuShiojenn Tseng
Sep 27, 2012·The Journal of Physical Chemistry. B·Jyh-Ping HsuShiojenn Tseng
Apr 25, 2012·Electrophoresis·Junjie ZhuXiangchun Xuan
Feb 12, 2005·Cardiology in Review·Shih-Ann Chen, Ching-Tai Tai
Feb 2, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Shiojenn TsengJyh-Ping Hsu
Mar 28, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Shizhi Qian, Sang W Joo
Apr 11, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Shizhi QianXuxin Zhao
May 22, 2009·The Journal of Physical Chemistry. B·Jyh-Ping HsuShiojenn Tseng
Oct 11, 2007·The Journal of Physical Chemistry. B·Jyh-Ping HsuShu-Jen Yeh
Jul 3, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Jyh-Ping Hsu, Li-Hsien Yeh
Jan 9, 2010·The Journal of Physical Chemistry. B·Xiaogang ZhangShiojenn Tseng
Feb 20, 2007·The Journal of Physical Chemistry. B·Jyh-Ping Hsu, Li-Hsien Yeh

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