Joule heating effects on electrokinetic focusing and trapping of particles in constriction microchannels

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	Joule heating effects on electrokinetic focusing and trapping of particles in constriction microchannels
	Zhu JJ; Sridharan S; Hu GQ(胡国庆); Xuan XC; Hu, GQ; Chinese Acad Sci, LNM, Inst Mech, Beijing 100190, Peoples R China.
发表期刊	JOURNAL OF MICROMECHANICS AND MICROENGINEERING
	2012-07-01
卷号	22 期号:7 页码:075011
ISSN	0960-1317
摘要	Joule heating (JH) is a ubiquitous phenomenon in electrokinetic microfluidic devices. Its effects on fluid and ionic species transport in capillary and microchip electrophoresis have been well studied. However, JH effects on the electrokinetic motion of microparticles in microchannels have been nearly unexplored in the literature. This paper presents an experimental investigation of JH effects on electrokinetic particle transport and manipulation in constriction microchannels under both pure dc and dc-biased ac electric fields. It is found that the JH effects reduce the dielectrophoretic focusing and trapping of particles, especially significant when dc-biased ac electric fields are used. These results are expected to provide a useful guidance for future designs of electrokinetic particle handling microdevices that will avoid JH effects or take advantage of them.
关键词	Continuous-flow Particle Electroosmotic Flow Electrodeless Dielectrophoresis Temperature Electrophoresis Separation Transport Solutes Devices Systems
学科领域	微机电系统中的流体力学问题
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000305890600025
项目资助者	This work is supported by NSF under grant no CBET-0853873 and by Clemson University through a start-up package to XX. The support from the National 973 Project (grant no 2011CB707604), NSFC (grant no 50890182) and Knowledge Innovation Program of CAS (KJCX2-YW-H18) to GH is gratefully appreciated as well. We also acknowledge the Open Fund support from LNM.
课题组名称	LNM微纳米流体力学
论文分区	二类/Q2
引用统计	被引频次：22[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/46692
专题	非线性力学国家重点实验室
通讯作者	Hu, GQ; Chinese Acad Sci, LNM, Inst Mech, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Zhu JJ,Sridharan S,Hu GQ,et al. Joule heating effects on electrokinetic focusing and trapping of particles in constriction microchannels[J]. JOURNAL OF MICROMECHANICS AND MICROENGINEERING,2012,22,7,:075011.
APA	Zhu JJ,Sridharan S,胡国庆,Xuan XC,Hu, GQ,&Chinese Acad Sci, LNM, Inst Mech, Beijing 100190, Peoples R China..(2012).Joule heating effects on electrokinetic focusing and trapping of particles in constriction microchannels.JOURNAL OF MICROMECHANICS AND MICROENGINEERING,22(7),075011.
MLA	Zhu JJ,et al."Joule heating effects on electrokinetic focusing and trapping of particles in constriction microchannels".JOURNAL OF MICROMECHANICS AND MICROENGINEERING 22.7(2012):075011.

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