Micro-calorimetric complementary metal oxide semiconductor gas sensor

3 Micro-calorimetric complementary metal oxide semiconductor gas sensor 

3 A conventional commercial pellistor (CityTechnology Ltd, UK, now part of Honeywell). 

4 A differential transducing circuit for micro-calorimeter (adapted from Udrea et al., 2001). 

Modem solid-state (resistive) gas sensors are generally based on wide-band-gap semiconducting metal oxide sensing materials. Resistive gas sensors available in the market (e.g. TGS 812, Figaro Engineering) generally use 

There are many possible ways of depositing nano-materials onto a CMOS substrate - for example, chemical vapour deposition (CVD) is possible 

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