Temperature and humidity sensor based on MEMS technology

Autor: Dongyan Zhao, Yubo Wang, Jin Shao, Peng Zhang, Yanning Chen, Zhen Fu, Shuaipeng Wang, Wenlong Zhao, Zhimei Zhou, Yuandong Yuan, Dengyuan Fu, Yinfang Zhu
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: AIP Advances, Vol 11, Iss 8, Pp 085126-085126-8 (2021)
Druh dokumentu: article
ISSN: 2158-3226
DOI: 10.1063/5.0053342
Popis: 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/°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.
Databáze: Directory of Open Access Journals