Fig. 1From: Novel Concept of Gas Sensitivity Characterization of Materials Suited for Implementation in FET-Based Gas Sensors a Schematic representation of surface charge measurement configuration and equivalent circuit of sample connected the electrometer with feedback amplifier in Coulomb mode, with the three capacitors C s, C IN, and A C f in parallel. Chemisorption of H2 on platinum is illustrated. b Top-view and c cross-section schematic representation of sample structureBack to article page