SYSTEM AND METHOD FOR MULTI-GAS SENSING AT A SINGLE OPERATING TEMPERATURE

A system and a method for multi-gas sensing using dielectric excitation of a single sensing material operated at a single operating temperature. Contrary to conventional gas sensor designs, embodiments of the gas sensors disclosed herein implement a metal oxide semiconductor sensing material maintained at a constant temperature, wherein dielectric excitation responses of the sensing material are measured at this constant temperature while the sensing material is exposed to a fluid sample. The disclosed gas sensors and gas sensing methods unexpectedly provide desirable characteristics, such as enhanced multi-gas differentiation, while operating at the constant operating temperature. For example, by measuring dielectric excitation responses of using at least one gas sensing element at a single operating temperature, the disclosed gas sensors and gas sensing methods demonstrate superior multi-gas differentiation compared to other gas sensors and other gas sensing methods that rely on multiple resistance measurements performed at several different operating temperatures.