Temperature and humidity sensor based on MEMS technology
Author(s): Zhao, DY (Zhao, Dongyan); Wang, YB (Wang, Yubo); Shao, J (Shao, Jin); Zhang, P (Zhang, Peng); Chen, YN (Chen, Yanning); Fu, Z (Fu, Zhen); Wang, SP (Wang, Shuaipeng); Zhao, WL (Zhao, Wenlong); Zhou, ZM (Zhou, Zhimei); Yuan, YD (Yuan, Yuandong); Fu, DY (Fu, Dengyuan); Zhu, YF (Zhu, Yinfang)
Source: AIP ADVANCES Volume: 11 Issue: 8 Article Number: 085126 DOI: 10.1063/5.0053342 Published: AUG 1 2021
Abstract: This work presents a monolithically integrated temperature and humidity sensor based on microelectromechanical systems technology. The temperature sensor working on the "bi-metallic" effect has the advantages of wide temperature range, high sensitivity, and fast detection. The humidity sensor has a polyimide parallel plate capacitive structure with the microporous array on the upper electrode designed for high sensitivity and fast response. Numerical analysis and COMSOL simulation showed that the temperature detection sensitivity is 0.2 mV/degrees C in the range of 193-393 K and humidity sensitivity is 0.405 pF/% relative humidity (RH) with the response time of 34 s in the humidity range of 0%-100% RH. The integrated temperature and humidity sensor has the advantages of small dimension, wide detection range, high precision, and fast response.
Accession Number: WOS:000686745100002
eISSN: 2158-3226
