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 (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 chan...

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Detalles Bibliográficos
Autores principales: Song, Yan, Zhao, Kun, Zuo, Jian, Wang, Cuicui, Li, Yizhang, Miao, Xinyang, Zhao, Xiaojing
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5677373/
https://www.ncbi.nlm.nih.gov/pubmed/29027922
http://dx.doi.org/10.3390/s17102330
Descripción
Sumario: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.

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