Capillary driven flow of polydimethylsiloxane in open rectangular microchannels.

  title={Capillary driven flow of polydimethylsiloxane in open rectangular microchannels.},
  author={Timothy Sowers and Rohit Sarkar and Suhas Eswarappa Prameela and Ehsan Izadi and Jagannathan Rajagopalan},
  journal={Soft matter},
  volume={12 26},
The flow of liquid polydimethylsiloxane (PDMS, Dow Corning Sylgard 184, 10 : 1 base to cross-linker ratio) in open, rectangular silicon microchannels, with and without a coating (100 nm) of poly-tetra-fluoro-ethylene (PTFE), was studied. Photolithographic patterning and etching of silicon wafers was used to create microchannels with a range of widths (∼5-50 μm) and depths (5-20 μm). Experimental PDMS flow rates in both PTFE-coated and uncoated channels were compared to an analytical model based… 

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