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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.
Source PublicationELECTROPHORESIS
2013-03
Volume34Issue:5Pages:674-683
ISSN0173-0835
AbstractInsulator-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.
KeywordElectrokinetic Eof Electrothermal Flow Insulator-based Dielectrophoresis Joule Heating Microfluidics
Subject Area微机电系统中的流体力学问题
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Indexed BySCI
Language英语
WOS IDWOS:000316267100008
Funding OrganizationNSF [CBET-0853873]; Clemson University; MOST [2011CB707604]; NSFC [11272321, 11102214]; CAS [KJCX2-YW-H18]; LNM
DepartmentLNM微纳米流体力学
Classification二类/Q1
Citation statistics
Cited Times:33[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/47163
Collection非线性力学国家重点实验室
Corresponding AuthorXuan XC (reprint author), Clemson Univ, Dept Mech Engn, Clemson, SC 29634 USA.
Recommended Citation
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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