Paper Title:
Fabrication of PDMS Microchannels with Round Profiles Using Glycerol Molds
  Abstract

Poly(dimethylsiloxane) (PDMS) based soft lithography has been widely used to make microfluidic devices, while the cross-sections of the microchannels using the solid molds are mostly rectangle. We present a method for fabricating PDMS channels with a round profile, which utilizes hydrophilic/hydrophobic modification of substrates and glycerol molds. The glycerol mold was formed by letting glycerol stay on the patterned hydrophilic area surrounded by hydrophobic area. The different aspect ratios of the profiles were realized using different hydrophilic/hydrophobic modifications with small channel widths. The round profile channels with 10%-30% aspect ratios were obtained.

  Info
Periodical
Edited by
Xiaohao Wang
Pages
345-349
DOI
10.4028/www.scientific.net/KEM.483.345
Citation
M. Du, H. B. Zhao, X. Y. Ye, Z. Y. Zhou, "Fabrication of PDMS Microchannels with Round Profiles Using Glycerol Molds", Key Engineering Materials, Vol. 483, pp. 345-349, 2011
Online since
June 2011
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