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A method for simultaneously determining the zeta potentials of the channel surface and the tracer particles using microparticle image velocimetry technique

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A method for simultaneously determining the zeta potentials of the channel surface and the tracer particles using microparticle image velocimetry technique

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dc.contributor.author Yan, Deguang
dc.contributor.author Yang, Chun
dc.contributor.author Nguyen, Nam-Trung
dc.contributor.author Huang, Xiaoyang
dc.date.accessioned 2012-05-03T06:03:49Z
dc.date.available 2012-05-03T06:03:49Z
dc.date.copyright 2006
dc.date.issued 2012-05-03
dc.identifier.citation Yan, D. G., Yang, C., Nguyen, N. T., & Huang, X. Y. (2006). A method for simultaneously determining the zeta potentials of the channel surface and the tracer particles using microparticle image velocimetry technique. Electrophoresis, 27(3), 620-627.
dc.identifier.uri http://hdl.handle.net/10220/7807
dc.description.abstract The zeta potentials of channel surfaces and tracer particles are of importance to the design of electrokinetic microfluidic devices, the characterization of channel materials, and the quantification of the microparticle image velocimetry (microPIV) measurement of EOFs. A method is proposed to simultaneously measure the zeta potentials of the channel surface and the tracer particles in aqueous solutions using the microPIV technique. Through the measurement of the steady velocity distributions of the tracer particles in both open- and closed-end rectangular microchannels under the same water chemistry condition, the electrophoretic velocity of the tracer particles and the EOF field of the microchannel are determined using the expressions derived in this study for the velocity distributions of charged tracer particles in the open- and closed-end rectangular microchannels. Thus, the zeta potentials of the tracer particles and the channel surfaces are simultaneously obtained using the least-square method to fit the microPIV measured velocity distribution of the tracer particles. Measurements were carried out with a microPIV system to determine the zeta potentials of the channel wall and the fluorescent tracer particles in deionized water and sodium chloride and boric acid solutions of various concentrations.
dc.format.extent 26 p.
dc.language.iso en
dc.relation.ispartofseries Electrophoresis
dc.rights © 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
dc.subject DRNTU::Engineering::Mechanical engineering.
dc.title A method for simultaneously determining the zeta potentials of the channel surface and the tracer particles using microparticle image velocimetry technique
dc.type Journal Article
dc.contributor.school School of Mechanical and Aerospace Engineering
dc.identifier.doi http://dx.doi.org/10.1002/elps.200500713

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