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To gain knowledge about the transduction mechanisms involved in the sensitivity of field effect gas sensors towards non-hydrogen containing substances, such as O2, NO and CO, the sensor signal characteristics during exposure of some conceptually different model sensors to these as well as hydrogen containing gases have been investigated. The MOS capacitor based model sensors employ different combinations...
The experiment on smoldering gasification in woody biomass has been carried out with a horizontal packed bed. Gas chromatography is employed to analyze the concentration of CH4, H2, CO, CO2 and O2 in gas products of smoldering gasification. The affects of temperature, moisture concentration and air condition on the flammable compositions of gas products are discussed. It is concluded that gas products...
The response characteristics of SiC based field effect gas sensors towards varying CO and O2 concentrations over a wide temperature range and at atmospheric pressure has been studied in detail. Both thin, discontinuous as well as dense, homogeneous Pt films as the catalytic gate material in field effect transistor devices have been investigated and the results compared to CO oxidation characteristics...
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