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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
2018-03-01
发表期刊ELECTROPHORESIS
卷号39期号:2018-05-06页码:887-896
ISSN0173-0835
摘要Insulator-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.
关键词Electrokinetic Electrothermal flow Joule heating Microfluidics Particle enrichment
DOI10.1002/elps.201700342
URL查看原文
收录类别SCI ; EI
语种英语
WOS记录号WOS:000426501100020
关键词[WOS]ON-A-CHIP ; ELECTRODELESS DIELECTROPHORESIS ; TEMPERATURE-MEASUREMENT ; ANALYSIS SYSTEMS ; SEPARATION ; DEVICES ; CELLS ; FLOW ; MICROFLUIDICS ; BIOPARTICLES
WOS研究方向Biochemical Research Methods ; Chemistry, Analytical
WOS类目Biochemistry & Molecular Biology ; Chemistry
项目资助者NSF [CBET-1704379] ; University 111 Project of China [B12019] ; NSFC [11272321, 11572334] ; LNM
论文分区二类
力学所作者排名5
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77923
专题非线性力学国家重点实验室
作者单位1.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
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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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