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Networks of different carbon nanotube (CNT) materials were investigated as resistive gas sensors for NO 2 detection. Sensor films were fabricated by airbrushing dispersions of double-walled and multi-walled CNTs (DWNTs and MWNTs, respectively) on alumina substrates. Sensors were characterized by resistance measurements from 25 to 250°C in air atmosphere in order to find the optimum detection...
Novel resistive gas sensors based on single-walled carbon nanotubes (SWNTs) as an active sensing element have been evaluated for hydrogen detection. Sensor films were fabricated by airbrushing SWNT dispersions on alumina substrates. The employed SWNT materials were either chemically functionalized with Pd or sputtered with Pd to enhance their sensitivity to hydrogen. Sensors were characterized by...
Single-walled carbon nanotube (SWNT) networks were tested as gas sensors for nitrogen dioxide detection. Sensor films were fabricated by airbrushing SWNT dispersions on alumina substrates. Sensors were characterized by resistance measurements from 25 to 200?C. The best response to NO2 was obtained at 200?C. The tested SWNT sensors were sensitive to low NO2 concentrations in nitrogen and air atmospheres...
Multi-walled carbon nanotube (MWNT) networks were investigated as resistive gas sensors for nitrogen dioxide detection. Sensor films were fabricated by airbrushing MWNT dispersions on alumina substrates. Sensors were characterized by resistance measurements from 25 to 250degC in air atmosphere, in order to find the optimum detection temperature. The best response to NO2 was obtained at 25degC. The...
Single-walled carbon nanotubes (SWNTs) produced by arc-discharge have been researched as resistive gas sensors for H 2 detection. Raw as well as modified single-walled carbon nanotubes were utilised as sensor material. Two types of modification treatments were carried out on the as grown SWNT material; chemical functionalization with palladium and doping with palladium by sputtering.CNTs were...
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