Numerical modeling of Joule heating effects in insulator-based dielectrophoresis microdevices

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	Numerical modeling of Joule heating effects in insulator-based dielectrophoresis microdevices
	Kale A; Patel S; Hu GQ(胡国庆); Xuan XC; Xuan XC (reprint author), Clemson Univ, Dept Mech Engn, Clemson, SC 29634 USA.
发表期刊	ELECTROPHORESIS
	2013-03
卷号	34 期号:5 页码:674-683
ISSN	0173-0835
摘要	Insulator-based DEP (iDEP) has been established as a powerful tool for manipulating particles in microfluidic devices. However, Joule heating may become an issue in iDEP microdevices due to the local amplification of electric field around the insulators. This results in an electrothermal force that can manifest itself in the flow field in the form of circulations, thus affecting the particle motion. We develop herein a transient, 3D, full-scale numerical model to study Joule heating and its effects on the coupled transport of charge, heat, and fluid in an iDEP device with a rectangular constriction microchannel. This model is validated by comparing the simulation results with the experimentally obtained fluid flow patterns and particle images that were reported in our recent works. It identifies a significant difference in the time scales of the electric, temperature, and flow fields in iDEP microdevices. It also predicts the locations of electrothermal flow circulations in different halves of the channel at the upstream and downstream of the constriction.
关键词	Electrokinetic Eof Electrothermal Flow Insulator-based Dielectrophoresis Joule Heating Microfluidics
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
语种	英语
WOS记录号	WOS:000316267100008
项目资助者	NSF [CBET-0853873]; Clemson University; MOST [2011CB707604]; NSFC [11272321, 11102214]; CAS [KJCX2-YW-H18]; LNM
课题组名称	LNM微纳米流体力学
论文分区	二类/Q1
引用统计	被引频次：46[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/311007/47163
专题	非线性力学国家重点实验室
通讯作者	Xuan XC (reprint author), Clemson Univ, Dept Mech Engn, Clemson, SC 29634 USA.
推荐引用方式 GB/T 7714	Kale A,Patel S,Hu GQ,et al. Numerical modeling of Joule heating effects in insulator-based dielectrophoresis microdevices[J]. ELECTROPHORESIS,2013,34,5,:674-683.
APA	Kale A,Patel S,Hu GQ,Xuan XC,&Xuan XC .(2013).Numerical modeling of Joule heating effects in insulator-based dielectrophoresis microdevices.ELECTROPHORESIS,34(5),674-683.
MLA	Kale A,et al."Numerical modeling of Joule heating effects in insulator-based dielectrophoresis microdevices".ELECTROPHORESIS 34.5(2013):674-683.

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