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The metal-oxide semiconductor thin film gas sensor with high resistivity based on In2O3 has been characterized to detect toxic gases including acetaldehyde which stems from the mold. The sensor device was fabricated by coating of gold (Au) electrode and platinum (Pt) heater on the alumina substrate. In order to enhance the sensitivity the catalyst such as Au and palladium (Pd) was deposited using...
CNT-SnO2 and CNT-In2O3 composite materials were prepared for micro sensor application. Micro sensors with CNT-SnO2 and CNT-In2O3 films were designed and fabricated using microelectronics technology on the silicon substrate prefabricated with Pt electrodes and heater. Gas sensing properties of the sensors were tested against combustible gases, such as H2, CO, CH4, C3H8, and NO2, which are common pollutant...
Nanopowders were synthesized employing a new route sol-gel combustion hybrid method using acetylene black as a fuel. The dried gels exhibited auto-catalytic combustion behavior. ITO and FTO nanopowders with narrow size distribution were obtained at 750degC. Crystal structures were examined by powder X-ray diffraction (XRD) and particle morphology as well as crystal size was investigated by scanning...
Thick film H2 sensors were fabricated using SnO2 loaded with Ag2O and PdOx. The composition that gave highest sensitivity for H2 was in the weight% ratio of SnO2:Ag2O:PdOx as 93:5:2. The nano-crystalline powders of SnO2-Ag2O-PdOx composites synthesized by sol-gel method were screen printed on alumina substrates. Fabricated sensors were tested against gases like H2, CH4, C3H8, C2H5OH and SO2. The composite...
With the growing attention to environmental problems and the increase of standard of living, there are imperative needs for gas sensors with high sensitivity and excellent selectivity in air quality monitoring. Domestic environmental monitoring is an important aspect nowadays. We have tried to develop a sensor that can help to monitor the presence of harmful gases. An auto ventilation controller has...
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