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Near-wall velocity of suspended particles in microchannel flow

Hau, Winky L. W. and Liu, Zhenyu and Korvink, Jan and Zengerle, Roland and Ducrée, Jens (2008) Near-wall velocity of suspended particles in microchannel flow. In: MEMS 2008 - 21st IEEE International Conference on Micro Electro Mechanical Systems, 13-17 January 2008, Tucson, AZ , USA. ISBN 978-1-4244-1792-6

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Abstract

This contribution investigates the characteristic reduction of the particle velocity with respect to the velocity profile of a pure liquid (water) in a pressure driven flow (PDF). It is shown by simulations and experiments that particles are slowed down once their local perturbation "cloud" of the velocity field hits the wall. We show that this effect scales with the ratio of the distance of sphere's surface from the wall, a, and the radius, a, of the sphere, i.e. delta/a.

Item Type:Conference or Workshop Item (Paper)
Event Type:Conference
Refereed:Yes
Uncontrolled Keywords:hydrodynamics; microchannel flow; particle size; particle velocity analysis;
Subjects:Biological Sciences > Microfluidics
DCU Faculties and Centres:Research Initiatives and Centres > Biomedical Diagnostics Institute (BDI)
Published in:Proceedings of the 21st IEEE International Conference on Micro Electro Mechanical Systems. . Institute of Electrical and Electronics Engineers. ISBN 978-1-4244-1792-6
Publisher:Institute of Electrical and Electronics Engineers
Official URL:http://dx.doi.org/10.1109/MEMSYS.2008.4443736
Copyright Information:©2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
ID Code:15466
Deposited On:14 Jul 2010 14:32 by DORAS Administrator. Last Modified 14 Jul 2010 14:32

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