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(A and B) Sensor response characteristics of a H2S-sensitive Pd-Au CS-FET (VDS = 100 mV; VBG = 0 V, relative humidity, ~30 to 40%; T ≈ 25°C). (C and D) Sensor response characteristics of a H2-sensitive Ni-Pd CS-FET (VDS = 2.5 mV; VBG = 0 V; relative humidity, ~30 to 40%; and T ≈ 25°C). (E and F) Sensor response characteristics of a NO2-sensitive Ni CS-FET (VDS = 2.5 mV; VBG = 0 V; relative humidity, ~45 to 50%; T ≈ 25°C).
