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We fabricated a carbon nanotube based gas sensor for the detection of CO and NH3 mixed gas. Conventional photolithography technology was applied for the localization of sensing materials and the sensor fabrication. Single walled carbon nanotubes were dispersed in Sodium Dodecyl Sulfate (SDS) solution. The whole surface was covered by a photoresist except window areas between two electrodes. Carbon...
CuO nanowires (NWs) were grown by the thermal oxidation of Cu foil at 400°C and gas sensors were fabricated by the deposition of a solution containing the CuO NWs. At 300–370°C, the sensor resistance increased upon exposure to 30–100ppm CO. This has been explained by the gas sensing characteristics of the p-type oxide semiconductor. In contrast, the sensor showed two opposite NO 2 sensing...
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