WO3 Based Gas Sensors
نویسندگان
چکیده
منابع مشابه
NO and NO2 Sensing Properties of WO3 and Co3O4 Based Gas Sensors
Semiconductor-based gas sensors that use n-type WO3 or p-type Co3O4 powder were fabricated and their gas sensing properties toward NO2 or NO (0.5-5 ppm in air) were investigated at 100 °C or 200 °C. The resistance of the WO3-based sensor increased on exposure to NO2 and NO. On the other hand, the resistance of the Co3O4-based sensor varied depending on the operating temperature and the gas spec...
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Tungsten trioxide is the second most commonly used semiconducting metal oxide in gas sensors. Semiconducting metal oxide (SMOX)-based sensors are small, robust, inexpensive and sensitive, making them highly attractive for handheld portable medical diagnostic detectors. WO₃ is reported to show high sensor responses to several biomarkers found in breath, e.g., acetone, ammonia, carbon monoxide, h...
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This paper present a new design and configuration of metal oxide gas sensor based on back-gated device that can operate at low temperature. Gold electrodes patterned onto an oxidized, heavily doped, p-type silicon substrate were designed and fabricated at a wafer level. The Au— electrodes were used as source—drain metal contacts and a third gate electrode was connected from the backside of the ...
متن کاملSelective detection of naphthalene with nanostructured WO3 gas sensors prepared by pulsed laser deposition
Pulsed laser deposition (PLD) at room temperature with a nanosecond laser was used to prepare WO3 layers on both MEMS microheater platforms and Si/SiO2 substrates. Structural characterization showed that the layers are formed of nanoparticles and nanoparticle agglomerates. Two types of layers were prepared, one at an oxygen partial pressure of 0.08 mbar and one at 0.2 mbar. The layer structure ...
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Molecular imprinting technology (MIT); often described as a method of designing a material to remember a target molecular structure (template); is a technique for the creation of molecularly imprinted polymers (MIPs) with custom-made binding sites complementary to the target molecules in shape; size and functional groups. MIT has been successfully applied to analyze; separate and detect macromo...
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ژورنال
عنوان ژورنال: Proceedings
سال: 2019
ISSN: 2504-3900
DOI: 10.3390/proceedings2130826