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Induced charge electro-osmotic particle separation
Chen XM1; Ren YK1,2,3; Hou LK1; Feng XS1; Jiang TY1; Jiang HY1,2
Corresponding AuthorRen, Yukun( ; Jiang, Hongyuan(
Source PublicationNANOSCALE
AbstractVortex-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.
Indexed BySCI ; EI
WOS IDWOS:000464518400062
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
Funding ProjectNational 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
Funding OrganizationNational Natural Science Foundation of China ; State Key Laboratory of Robotics and System (HIT) ; State Key Laboratory of Nonlinear Mechanics
ContributorRen, Yukun ; Jiang, Hongyuan
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Harbin Inst Technol, Sch Mechatron Engn, Harbin 150001, Heilongjiang, Peoples R China;
2.Harbin Inst Technol, State Key Lab Robot & Syst, Harbin 150001, Heilongjiang, Peoples R China;
3.Chinese Acad Sci, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
Recommended Citation
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.
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