Enhancement of electrophoretic mobility of microparticles near a solid wall-experimental verification

Although the existing theories have predicted enhancement of electrophoretic mobility of microparticles near a solid wall, the relevant experimental studies are rare. This is mainly due to difficulties in experimentally controlling and measuring particle-wall separations under dynamic electrophoreti...

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Main Authors: Liang, Qian, Zhao, Cunlu, Yang, Chun
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2015
Subjects:
Online Access:https://hdl.handle.net/10356/106575
http://hdl.handle.net/10220/25050
http://dx.doi.org/10.1002/elps.201400405
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1065752019-12-06T22:14:27Z Enhancement of electrophoretic mobility of microparticles near a solid wall-experimental verification Liang, Qian Zhao, Cunlu Yang, Chun School of Mechanical and Aerospace Engineering DRNTU::Engineering::Aeronautical engineering::Electrical systems and equipment Although the existing theories have predicted enhancement of electrophoretic mobility of microparticles near a solid wall, the relevant experimental studies are rare. This is mainly due to difficulties in experimentally controlling and measuring particle-wall separations under dynamic electrophoretic conditions. This paper reports an experimental verification of the enhancement of electrophoretic mobility of a microparticle moving near the wall of a microchannel. This is achieved by balancing dielectrophoretic and lift forces against gravitational force acting on the microparticle so as to control the gap of particle-wall separation. A simple experimental setup is configured and a fabrication method is developed to measure such separation gap. The experiments are conducted for various particle sizes under different electric field strengths. Our experimental results are compared against the available theoretical predictions in the literature. 2015-02-13T02:46:51Z 2019-12-06T22:14:27Z 2015-02-13T02:46:51Z 2019-12-06T22:14:27Z 2014 2014 Journal Article Liang, Q., Zhao, C., & Yang, C. (2015). Enhancement of electrophoretic mobility of microparticles near a solid wall-experimental verification. Electrophoresis, 36(5), 731-736. 0173-0835 https://hdl.handle.net/10356/106575 http://hdl.handle.net/10220/25050 http://dx.doi.org/10.1002/elps.201400405 en Electrophoresis © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Aeronautical engineering::Electrical systems and equipment
spellingShingle DRNTU::Engineering::Aeronautical engineering::Electrical systems and equipment
Liang, Qian
Zhao, Cunlu
Yang, Chun
Enhancement of electrophoretic mobility of microparticles near a solid wall-experimental verification
description Although the existing theories have predicted enhancement of electrophoretic mobility of microparticles near a solid wall, the relevant experimental studies are rare. This is mainly due to difficulties in experimentally controlling and measuring particle-wall separations under dynamic electrophoretic conditions. This paper reports an experimental verification of the enhancement of electrophoretic mobility of a microparticle moving near the wall of a microchannel. This is achieved by balancing dielectrophoretic and lift forces against gravitational force acting on the microparticle so as to control the gap of particle-wall separation. A simple experimental setup is configured and a fabrication method is developed to measure such separation gap. The experiments are conducted for various particle sizes under different electric field strengths. Our experimental results are compared against the available theoretical predictions in the literature.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Liang, Qian
Zhao, Cunlu
Yang, Chun
format Article
author Liang, Qian
Zhao, Cunlu
Yang, Chun
author_sort Liang, Qian
title Enhancement of electrophoretic mobility of microparticles near a solid wall-experimental verification
title_short Enhancement of electrophoretic mobility of microparticles near a solid wall-experimental verification
title_full Enhancement of electrophoretic mobility of microparticles near a solid wall-experimental verification
title_fullStr Enhancement of electrophoretic mobility of microparticles near a solid wall-experimental verification
title_full_unstemmed Enhancement of electrophoretic mobility of microparticles near a solid wall-experimental verification
title_sort enhancement of electrophoretic mobility of microparticles near a solid wall-experimental verification
publishDate 2015
url https://hdl.handle.net/10356/106575
http://hdl.handle.net/10220/25050
http://dx.doi.org/10.1002/elps.201400405
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