Fabrication of PDMS Microchannels with Round Profiles Using Glycerol Molds

Min Du; Hang Bo Zhao; Xiong Ying Ye; Zhao Ying Zhou

doi:10.4028/www.scientific.net/KEM.483.345

Paper Titles

Experimental Investigations of Anode Structure on the Performance of Air-Breathing µDMFC
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The Competition of the Retraction and Capillary Forces during the DNA Molecules Moving within Channels
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Development of a Novel Electrochemical Surface Plasmon Resonance Instrument Based on a Mini Three Electrode Flow Cell
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The Fabrication and Experiment of a Four-Electrode Conductivity Sensor for Fresh Water
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Fabrication of PDMS Microchannels with Round Profiles Using Glycerol Molds
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Theoretical Analysis and Experimental Investigation on Designing Method of Micro-Groove Heat Pipe
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Magnetic Microfluidic Mixer
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Rapid Microfluidc Biochips Fabrication by Femtosecond Laser on Glass Substrate
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Rapid Detection of Methanol in an Integration Microfluidic Chip
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 483Fabrication of PDMS Microchannels with Round...

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.