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Reduced graphene oxide (RGO) has potential as various gas sensors. However, the sensitivity depends on the size of layers and the number of exfoliated planes. We fabricated a gas sensor based on the RGO on top of silver electrode and RGO on top of copper nanowires put on similar electrodes. The graphene oxide (GO) was synthesised using Hummer’s method. It was made into RGO using hydrazine as a reduction media. We constructed the gas sensor on top of silver electrodes. The distance between electrodes was 0.5 mm. The RGO sensor was tested to detect several gases in the resistive mode. We also compared the performance RGO sensor on top of Cu nanowires (CuNWs) with the RGO without the CuNWs. The result indicated that the response was in the order of percent when exposed to different concentrations in the range of 100 ppm and 500 ppm. However, the RGO sensor put on directly on Ag electrodes are more sensitive compared to RGO CuNW-Ag sensor.

Study of Thin Film Cu Nanowire and Reduced Graphene Oxide as A Gas Sensor