| 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 Publication | ELECTROPHORESIS
 |
| 2013-03 | |
| Volume | 34Issue:5Pages:674-683 |
| ISSN | 0173-0835 |
| Abstract | 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. |
| Keyword | Electrokinetic Eof Electrothermal Flow Insulator-based Dielectrophoresis Joule Heating Microfluidics |
| Subject Area | 微机电系统中的流体力学问题 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000316267100008 |
| Funding Organization | NSF [CBET-0853873]; Clemson University; MOST [2011CB707604]; NSFC [11272321, 11102214]; CAS [KJCX2-YW-H18]; LNM |
| Department | LNM微纳米流体力学 |
| Classification | 二类/Q1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/47163 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Xuan 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. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| IMCAS-J2013-102.pdf（738KB） | 开放获取 | -- | View Download | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment