Journal
LANGMUIR
Volume 32, Issue 19, Pages 4815-4819Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.6b01186
Keywords
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Funding
- National Natural Science Foundation of China (NSFC) [51275266, 51322501, 51275036]
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Drag reduction was found in polydimethylsiloxane (PDMS) microchannels when the flow was pulled by depressurization at the inlet, and it was attributed to the formation of the bubbles on the PDMS surface. The formed bubbles were examined by atomic force microscopy (AFM), and the resultant effective slip length was measured by microparticle image velocimetry (mu PIV). The drag reduction was found to decrease as the bubbles grew and detached from the surface, causing a pulsatile flow in the microchannel.
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