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The Detection of Water Flow in Rectangular Microchannels by Terahertz Time Domain Spectroscopy.

著者 Song Y , Zhao K , Zuo J , Wang C , Li Y , Miao X , Zhao X
Sensors (Basel).2017 Oct 13 ; 17(10):.
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Flow characteristics of water were tested in a rectangular microchannel for Reynolds number (Re) between 0 and 446 by terahertz time domain spectroscopy (THz-TDS). Output THz peak trough intensities and the calculated absorbances of the flow were analyzed theoretically. The results show a rapid change for Re < 250 and a slow change as Re increases, which is caused by the early transition from laminar to transition flow beginning nearly at Re = 250. Then this finding is confirmed in the plot of the flow resistant. Our results demonstrate that the THz-TDS could be a valuable tool to monitor and character the flow performance in microscale structures.
PMID: 29027922 [PubMed - in process]
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