Induced charge electro-osmotic particle separation

doi:10.1039/c8nr09148j

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Induced charge electro-osmotic particle separation
	Chen XM 3; Ren YK 1,2,3; Hou LK 3; Feng XS 3; Jiang TY 3; Jiang HY 2,3
刊名	NANOSCALE
	2019-04-07
卷号	11 期号:13 页码:6410-6421
ISSN号	2040-3364
DOI	10.1039/c8nr09148j
通讯作者	Ren, Yukun(rykhit@hit.edu.cn) ; Jiang, Hongyuan(jhy_hit@hit.edu.cn)
英文摘要	Vortex-based separation is a promising method in particle-particle separation and has only been demonstrated theoretically some years ago. To date, a continuous-flow separation device based on vortices has not been conceived because many known vortices were either unstable or controlling them lacked precision. Electro-convection from induced charge electro-osmosis (ICEO) has advantages, such as adjustable flow profiles, long-range actuation, and long-lived vortices, and offers an alternative means of particle separation. We found though a different ICEO focusing behaviour of particles whereby particles were trapped and concentrated in two vortex cores. Encouraged by these features of ICEO vortices, we proposed a direct method for particle separation in continuous flow. In various experiments, we first characterized the ICEO-induced focusing performances of various kinds of particle samples in a straight channel embedded with an individual central bipolar electrode, presenting a justifiable explanation. Second, the combined dependences of ICEO particle separation on the sample size and mass density were investigated. Third, an application to cell purification was performed in which we obtained a purity surpassing 98%. Finally, we investigated the ICEO characteristics of nanoparticles, exploiting our method in isolating nanoscale objects by separating 500 nm and 5 m polystyrene beads, gaining clear separation. Certain features of this method, such as having ease of operation, simple structure, and continuous flow, and being prefocusing free and physical property-based, indicate its good potential in tackling environmental monitoring, cell sorting, chemical analysis, isolation of uniform-sized graphene and transesterification of micro-algal lipids to biodiesel.
分类号	一类
资助项目	National Natural Science Foundation of China[11872165] ; National Natural Science Foundation of China[11672095] ; National Natural Science Foundation of China[11802078] ; State Key Laboratory of Robotics and System (HIT)[SKLRS201803B] ; State Key Laboratory of Nonlinear Mechanics
WOS关键词	MICROFLUIDIC DEVICE ; CELLS
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
WOS记录号	WOS:000464518400062
资助机构	National Natural Science Foundation of China ; State Key Laboratory of Robotics and System (HIT) ; State Key Laboratory of Nonlinear Mechanics
其他责任者	Ren, Yukun ; Jiang, Hongyuan
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/78735]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Chinese Acad Sci, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 2.Harbin Inst Technol, State Key Lab Robot & Syst, Harbin 150001, Heilongjiang, Peoples R China; 3.Harbin Inst Technol, Sch Mechatron Engn, Harbin 150001, Heilongjiang, Peoples R China;
推荐引用方式 GB/T 7714	Chen XM,Ren YK,Hou LK,et al. Induced charge electro-osmotic particle separation[J]. NANOSCALE,2019,11(13):6410-6421.
APA	Chen XM,Ren YK,Hou LK,Feng XS,Jiang TY,&Jiang HY.(2019).Induced charge electro-osmotic particle separation.NANOSCALE,11(13),6410-6421.
MLA	Chen XM,et al."Induced charge electro-osmotic particle separation".NANOSCALE 11.13(2019):6410-6421.