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

Flow characteristics of water were tested in a rectangular microchannel for Reynolds number ( ) 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 chang...

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Published in:Sensors (Basel, Switzerland) Switzerland), 2017-10, Vol.17 (10), p.2330
Main Authors: Song, Yan, Zhao, Kun, Zuo, Jian, Wang, Cuicui, Li, Yizhang, Miao, Xinyang, Zhao, Xiaojing
Format: Article
Language:English
Subjects:
Flow characteristics
Flow resistance
flow-rate
Fluid dynamics
Fluid flow
Laminar flow
Microchannels
pressure drop
rectangular microchannel
Reynolds number
Spectrum analysis
THz-TDS
Transition flow
Water flow
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cited_by cdi_FETCH-LOGICAL-c469t-f0a901ae542b263019eaf3d26e8561f38d59dee541b2f75a5856ed539aa2056c3
cites cdi_FETCH-LOGICAL-c469t-f0a901ae542b263019eaf3d26e8561f38d59dee541b2f75a5856ed539aa2056c3
container_end_page
container_issue 10
container_start_page 2330
container_title Sensors (Basel, Switzerland)
container_volume 17
creator Song, Yan
Zhao, Kun
Zuo, Jian
Wang, Cuicui
Li, Yizhang
Miao, Xinyang
Zhao, Xiaojing
description Flow characteristics of water were tested in a rectangular microchannel for Reynolds number ( ) 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 < 250 and a slow change as increases, which is caused by the early transition from laminar to transition flow beginning nearly at = 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.
doi_str_mv 10.3390/s17102330
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subjects Flow characteristics
Flow resistance
flow-rate
Fluid dynamics
Fluid flow
Laminar flow
Microchannels
pressure drop
rectangular microchannel
Reynolds number
Spectrum analysis
THz-TDS
Transition flow
Water flow
title The Detection of Water Flow in Rectangular Microchannels by Terahertz Time Domain Spectroscopy
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