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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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. |
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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 |
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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. |
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School of Mechanical and Aerospace Engineering |
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School of Mechanical and Aerospace Engineering Liang, Qian Zhao, Cunlu Yang, Chun |
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Article |
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Liang, Qian Zhao, Cunlu Yang, Chun |
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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 |
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2015 |
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https://hdl.handle.net/10356/106575 http://hdl.handle.net/10220/25050 http://dx.doi.org/10.1002/elps.201400405 |
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