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Liquid State Polydimethylsiloxane Wrinkle Fabrication for passive micro fluidic channel mixer

S.H. Lee, Y. Yoon, J. Lee, J. Jeon, J-B Lee, M.J. Kim
University of Texas at Dallas, US

Keywords: Liquid State, Polydimethylsiloxane, Wrinkle, Fabrication, Micro Fluidic Channel, Mixer


Here we report an epoch-making simple fabrication for wrinkle formation. The present wrinkle formation process is a solution for controlling the area, shape and direction of wrinkle area by forming wrinkles on the liquid state polydimethylsiloxane directly exposed to sputtered metal particles in the low vacuum plasma chamber in various vacuum states and deposition conditions. Also the process allows us to make extremely flexible metal thin film electrode with approved adhesion.Applications of the present process could be applied to areas including electrode systems, tissue engineering, cell behavior can be controlled by altering surface topology, cell culturing substrate, including optical diffraction gratings and optical micro lenses, biosensors, cell weight sensors, micro fluidic devices without mixers, and flexible and multi axial stretch able electrodes.The present method solves these problems by making wrinkles on the liquid state PDMS using sputtered metal particles (ions) by plasma in the vacuum chamber.
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