Two-Dimensional Open Microfluidic Devices by Tuning the Wettability on Patterned Superhydrophobic Polymeric Surface

last updated: 2014-05-28
TitleTwo-Dimensional Open Microfluidic Devices by Tuning the Wettability on Patterned Superhydrophobic Polymeric Surface
Publication TypePapers in Scientific Journals
Year of Publication2010
AuthorsOliveira N. M., Neto A. I., Song W. L., and Mano J. F.
Abstract

We present a simple and economical method to produce a potential open microfluidic polymeric device. Biomimetic superhydrophobic surfaces were prepared on polystyrene using a phase separation methodology. Patterned two-dimensional channels were imprinted on the superhydrophobic substrates by exposing the surface to plasma or UV–ozone radiation. The wettability of the channels could be precisely controlled between the superhydrophobic and superhydrophilic states by changing the exposure time. The ability of superhydrophilic paths to drive liquid flows in a horizontal position was found to be significantly higher than for the case of hydrophilic paths patterned onto smooth surfaces. 

JournalApplied Physics Express
Volume3
Pagination085205
Date Published2010-08-06
PublisherJapan Society of Applied Physics
DOI10.1143/APEX.3.085205
URLhttp://apex.jsap.jp/link?APEX/3/085205/
KeywordsMicrofluidic, superhydrophobic surfaces
RightsrestrictedAccess
Peer reviewedyes
Statuspublished

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