Electrokinetic particle entry into microchannels
文献类型：期刊论文
| 作者 | Zhu JJ; Hu GQ(胡国庆) ; Xuan XC; Hu, GQ
|
| 刊名 | ELECTROPHORESIS
 |
| 出版日期 | 2012-03-01 |
| 卷号 | 33期号:6页码:916-922 |
| 通讯作者邮箱 | guoqing.hu@imech.ac.cn |
| 关键词 | Electrokinetics Microfluidics Dielectrophoresis Reservoir Electrophoretic Motion Electroosmotic Flow Spherical-Particle Cylindrical Pore Dielectrophoretic Force Colloidal Sphere Double-Layer Separation Transport Capillary |
| ISSN号 | 0173-0835 |
| 产权排序 | [Hu, Guoqing] Chinese Acad Sci, LNM Inst Mech, Beijing 100190, Peoples R China;[Zhu, Junjie; Xuan, Xiangchun] Clemson Univ, Dept Mech Engn, Clemson, SC USA |
| 通讯作者 | Hu, GQ ; Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China. |
| 合作状况 | 国际 |
| 中文摘要 | The fundamental understanding of particle electrokinetics in microchannels is relevant to many applications. To date, however, the majority of previous studies have been limited to particle motion within the area of microchannels. This work presents the first experimental and numerical investigation of electrokinetic particle entry into a microchannel. We find that the particle entry motion can be significantly deviated from the fluid streamline by particle dielectrophoresis at the reservoir-microchannel junction. This negative dielectrophoretic motion is induced by the inherent non-uniform electric field at the junction and is insensitive to the microchannel length. It slows down the entering particles and pushes them toward the center of the microchannel. The consequence is the demonstrated particle deflection, focusing, and trapping phenomena at the reservoir-microchannel junction. Such rich phenomena are studied by tuning the AC component of a DC-biased AC electric field. They are also utilized to implement a selective concentration and continuous separation of particles by size inside the entry reservoir. |
| 学科主题 | 微机电系统中的流体力学问题 |
| 分类号 | 二类/Q1 |
| 收录类别 | SCI |
| 资助信息 | This work was supported by NSF under Grant No. CBET-0853873 and by Clemson University through a start-up package to X. Xuan. The support from the National 973 Project (Grant No 2011CB707604), NSFC (Grant No 50890182), and Knowledge Innovation Program of CAS (KJCX2-YW-H18) to G. Hu is also gratefully appreciated. |
| 原文出处 | http://dx.doi.org/10.1002/elps.201100484 |
| 语种 | 英语 |
| WOS记录号 | WOS:000303155700005 |
| 公开日期 | 2013-01-18 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/46678]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Hu, GQ |
| 推荐引用方式 GB/T 7714 | Zhu JJ,Hu GQ,Xuan XC,et al. Electrokinetic particle entry into microchannels[J]. ELECTROPHORESIS,2012,33(6):916-922. |
| APA | Zhu JJ,胡国庆,Xuan XC,&Hu, GQ.(2012).Electrokinetic particle entry into microchannels.ELECTROPHORESIS,33(6),916-922. |
| MLA | Zhu JJ,et al."Electrokinetic particle entry into microchannels".ELECTROPHORESIS 33.6(2012):916-922. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。