IMECH-IR  > 非线性力学国家重点实验室
Electrothermal enrichment of submicron particles in an insulator-based dielectrophoretic microdevice
Kale A; Song L; Lu XY(陆星宇); Yu LD; Hu GQ(胡国庆); Xuan XC
Source PublicationELECTROPHORESIS
2018-03-01
Volume39Issue:2018-05-06Pages:887-896
ISSN0173-0835
AbstractInsulator-based dielectrophoresis (iDEP) exploits in-channel hurdles and posts etc. to create electric field gradients for various particle manipulations. However, the presence of such insulating structures also amplifies the Joule heating in the fluid around themselves, leading to both temperature gradients and electrothermal flow. These Joule heating effects have been previously demonstrated to weaken the dielectrophoretic focusing and trapping of microscale and nanoscale particles. We find that the electrothermal flow vortices are able to entrain submicron particles for a localized enrichment near the insulating tips of a ratchet microchannel. This increase in particle concentration is reasonably predicted by a full-scale numerical simulation of the mass transport along with the coupled charge, heat and fluid transport. Our model also predicts the electric current and flow pattern in the fluid with a good agreement with the experimental observations.
KeywordElectrokinetic Electrothermal flow Joule heating Microfluidics Particle enrichment
DOI10.1002/elps.201700342
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000426501100020
WOS KeywordON-A-CHIP ; ELECTRODELESS DIELECTROPHORESIS ; TEMPERATURE-MEASUREMENT ; ANALYSIS SYSTEMS ; SEPARATION ; DEVICES ; CELLS ; FLOW ; MICROFLUIDICS ; BIOPARTICLES
WOS Research AreaBiochemical Research Methods ; Chemistry, Analytical
WOS SubjectBiochemistry & Molecular Biology ; Chemistry
Funding OrganizationNSF [CBET-1704379] ; University 111 Project of China [B12019] ; NSFC [11272321, 11572334] ; LNM
Classification二类
Ranking5
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77923
Collection非线性力学国家重点实验室
Affiliation1.Clemson Univ, Dept Mech Engn, Clemson, SC 29634 USA
2.Hefei Univ Technol, Sch Instrument Sci & Optoelect Engn, Hefei, Anhui, Peoples R China
3.Chinese Acad Sci, LNM, Inst Mech, Beijing, Peoples R China
4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Kale A,Song L,Lu XY,et al. Electrothermal enrichment of submicron particles in an insulator-based dielectrophoretic microdevice[J]. ELECTROPHORESIS,2018,39(2018-05-06):887-896.
APA Kale A,Song L,陆星宇,Yu LD,胡国庆,&Xuan XC.(2018).Electrothermal enrichment of submicron particles in an insulator-based dielectrophoretic microdevice.ELECTROPHORESIS,39(2018-05-06),887-896.
MLA Kale A,et al."Electrothermal enrichment of submicron particles in an insulator-based dielectrophoretic microdevice".ELECTROPHORESIS 39.2018-05-06(2018):887-896.
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