(Invited) Nano-Derived Microsensors for Monitoring Gas Species in Harsh-Environments

Abstract

The objective of our work is to develop nano-derived, micro-scale sensors to monitor various gases within extreme or harsh-environments. These environments include high temperature and pressure applications, where sensors are required to monitor emissions in applications such as coal gasifiers and turbine generators. The environment may also include applications in extreme cold and low-pressure applications, where sensors are required to monitor chemical leaks, as possible on the International Space Station and satellite servicing operations. Our research focuses on the development of microsensors for both of these extreme temperatures and pressure environments, but the current paper will only focus upon the high-temperature sensor application. In the case of the high-temperature gas sensing, nanomaterials for detecting gases such as H2 and SO2 within high-temperature environments were investigated at 1000°C. The microsensors developed in this work are based upon a resistive-type (chemiresistive) sensor platform.