Flow characterization of electroconvective micromixer with a nanoporous polymer membrane in-situ fabricated using a laser polymerization technique

Title
Flow characterization of electroconvective micromixer with a nanoporous polymer membrane in-situ fabricated using a laser polymerization technique
Authors
송시몬
Keywords
PROTEINS; MIXER
Issue Date
2015-05
Publisher
AMER INST PHYSICS
Citation
BIOMICROFLUIDICS, v. 9, NO 3, Page. 1-10
Abstract
Electroconvection is known to cause strong convective mixing in a microchannel near a nanoporous membrane or a nanochannel in contact with an electrolyte solution due to the external electric field. This study addresses micromixer behavior subject to electroconvection occurring near a nanoporous membrane in-situ fabricated by a laser polymerization technique on a microfluidic chip. We found that the micromixer behavior can be categorized into three regimes. Briefly, the weak electroconvection regime is characterized by weak mixing performance at a low applied voltage and KCl concentration, whereas the strong electroconvection regime has a high mixing performance when the applied voltage and KCl concentration are moderately high. Finally, the incomplete electroconvection regime has an incomplete electric double-layer overlap in the nanopores of the membrane when the electrolyte concentration is very high. The mixing index reached 0.92 in the strong electroconvection regime. The detailed fabrication methods for the micromixer and characterization results are discussed in this paper. (C) 2015 AIP Publishing LLC.
URI
http://scitation.aip.org/content/aip/journal/bmf/9/3/10.1063/1.4922082http://hdl.handle.net/20.500.11754/24402
ISSN
1932-1058
DOI
http://dx.doi.org/10.1063/1.4922082
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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