Metal oxide gas sensor array devices, systems, and associated methods

A transducer array operable to detect an analyte, comprising:

• a support substrate;
• a plurality of Metal Oxide Semiconductor (MOS) sensor pixels coupled to the substrate, each MOS sensor pixel further comprising a MOS active material configured to be exposed to the analyte;
• a plurality of heating elements thermally coupled to the MOS active materials of the plurality of MOS sensor pixels in a position and orientation that facilitates heating of the MOS active materials to a plurality of predetermined different temperatures;
• an electrode functionally coupled to the MOS active material and operable to detect response signals from the MOS active material at each of the plurality of predetermined different temperatures;
• and
• a temperature controller having circuitry with logic configured to heat the plurality of heating elements to a sequence of predetermined different temperatures for a predetermined period of time for each of the predetermined different temperatures.