Review of Optical Humidity Sensors

Optical humidity sensors have evolved through decades of research and development, constantly adapting to new demands and challenges. The continuous growth is supported by the emergence of a variety of optical fibers and functional materials, in addition to the adaptation of different sensing mechan...

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Published inSensors (Basel, Switzerland) Vol. 21; no. 23; p. 8049
Main Authors Rao, Xing, Zhao, Lin, Xu, Lukui, Wang, Yuhang, Liu, Kuan, Wang, Ying, Chen, George Y., Liu, Tongyu, Wang, Yiping
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.12.2021
MDPI
Subjects
Accuracy
Cellulose
Color
Greenhouses
Humidity
hygrometer
Internet of Things
moisture
optical fiber
Optics
Response time
Review
Semiconductors
Sensors
Thin films
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Summary:Optical humidity sensors have evolved through decades of research and development, constantly adapting to new demands and challenges. The continuous growth is supported by the emergence of a variety of optical fibers and functional materials, in addition to the adaptation of different sensing mechanisms and optical techniques. This review attempts to cover the majority of optical humidity sensors reported to date, highlight trends in design and performance, and discuss the challenges of different applications.
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These authors contributed equally.
ISSN:1424-8220
1424-8220
DOI:10.3390/s21238049