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Study of microscale hydraulic jump phenomenon for hydrodynamic trap-and-release of microparticles

Authors
Park, YounggeunChoi, YeonhoMitra, DebkishoreKang, TaewookLee, Luke P.
Issue Date
11-Oct-2010
Publisher
AMER INST PHYSICS
Keywords
microscale; hydraulic jump
Citation
APPLIED PHYSICS LETTERS, v.97, no.15
Indexed
SCIE
SCOPUS
Journal Title
APPLIED PHYSICS LETTERS
Volume
97
Number
15
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/115520
DOI
10.1063/1.3479052
ISSN
0003-6951
Abstract
Easy trap-and-release of microparticles is necessary to study biological cellular behavior. The hydraulic jump phenomenon inspired us to conceive a microfluidic device for the hydrodynamic trap-and-release of microparticles. A sudden height increase in a microfluidic channel leads to a dramatic decrease in flow velocity, allowing effective trapping of the microparticles by energy conversion. The trapped particles can be released by stronger inertial force based on simply increasing the flow velocity. We present a systematic, numerical study of trap-and-release of the microparticles using multiphase Navier-Stokes equations. Effect of geometry flow velocity, particle diameter, and adhesion force on trap-and-release was studied. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3479052]
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