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Joule heating effects on electroosmotic entry flow
Prabhakaran RA; Zhou YL; Patel S; Kale A; Song YX; Hu GQ(胡国庆); Xuan XC; Xuan, XC (reprint author), Clemson Univ, Dept Mech Engn, Clemson, SC 29634 USA.
Source PublicationELECTROPHORESIS
2017-03-01
Volume38Issue:5Pages:572-579
ISSN0173-0835
AbstractElectroosmotic flow is the transport method of choice in microfluidic devices over traditional pressure-driven flow. To date however studies on electroosmotic flow have been almost entirely limited to inside microchannels. This work presents the first experimental study of Joule heating effects on electroosmotic fluid entry from the inlet reservoir (i.e. the well that supplies fluids and samples) to the microchannel in a polymer-based microfluidic chip. Electrothermal fluid circulations are observed at the reservoir-microchannel junction which grow in size and strength with the increasing alternating current to direct current voltage ratio. Moreover a 2D depth-averaged numerical model is developed to understand the effects of Joule heating on fluid temperature and flow fields in electrokinetic microfluidic chips. This model overcomes the problems encountered in previous unrealistic 2D and costly 3D models and is able to predict the observed electroosmotic entry flow patterns with a good agreement.
KeywordElectrokinetic Electroosmosis Electrothermal Flow Entry Flow Joule Heating
DOI10.1002/elps.201600296
Indexed BySCI
Language英语
WOS IDWOS:000397179800003
WOS KeywordRESERVOIR-BASED DIELECTROPHORESIS ; CAPILLARY-ZONE-ELECTROPHORESIS ; ELECTROKINETIC FLOW ; TEMPERATURE-MEASUREMENT ; PARTICLE SEPARATION ; AC ELECTROKINETICS ; ELECTRIC-FIELDS ; MICROCHANNELS ; DEVICES ; ELECTROHYDRODYNAMICS
WOS Research AreaBiochemistry & Molecular Biology ; Chemistry
WOS SubjectBiochemical Research Methods ; Chemistry, Analytical
Funding OrganizationNSF under grant(CBET-1150670) ; University 111 Project of China under Grant(B08046) ; NSFC under grants(11272321 ; Open Fund of LNM ; 11572334)
DepartmentLNM微纳米流体力学
Classification二类
Ranking5+
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60584
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
Prabhakaran RA,Zhou YL,Patel S,et al. Joule heating effects on electroosmotic entry flow[J]. ELECTROPHORESIS,2017,38(5):572-579.
APA Prabhakaran RA.,Zhou YL.,Patel S.,Kale A.,Song YX.,...&Xuan, XC .(2017).Joule heating effects on electroosmotic entry flow.ELECTROPHORESIS,38(5),572-579.
MLA Prabhakaran RA,et al."Joule heating effects on electroosmotic entry flow".ELECTROPHORESIS 38.5(2017):572-579.
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