CO2 sensing characteristics of SAW sensor operated at high temperature

Abhishek Ghosh; Chen Zhang; Haifeng Zhang

doi:10.1117/12.2517006

27 March 2019 CO₂ sensing characteristics of SAW sensor operated at high temperature

Abhishek Ghosh, Chen Zhang, Haifeng Zhang

Proceedings Volume 10970, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019; 109702A (2019) https://doi.org/10.1117/12.2517006
Event: SPIE Smart Structures + Nondestructive Evaluation, 2019, Denver, Colorado, United States

Abstract

Development of indigenous CO₂ sensing element operated at an extreme operating temperature (≥ 350 °C) is highly desirable. Use of langasite based surface acoustic wave (SAW) gas sensors is extremely advantageous compared to other commercially available sensors as it can operate at a higher temperature (> 300 °C). Only a few literature reports exist which demonstrated a high-temperature CO₂ gas sensor. In the present study, we have demonstrated CO₂sensing properties using langasite based SAW sensors. The temperature-dependent gas sensing characteristics have been determined by observing frequency shift due to the adsorption of gas molecules.

Conference Presentation

Citation Download Citation

Abhishek Ghosh, Chen Zhang, and Haifeng Zhang "CO₂ sensing characteristics of SAW sensor operated at high temperature", Proc. SPIE 10970, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019, 109702A (27 March 2019); https://doi.org/10.1117/12.2517006

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