منابع مشابه
Doped and Dedoped Polyaniline Nanofiber Based Conductometric Hydrogen Gas Sensors
Template-free, rapid polymerisation was employed to synthesize polyaniline nanofibers using chemical oxidative polymerisation of aniline, with HCl as a dopant. The doped and dedoped nanofibers were deposited onto conductometric sapphire transducers for gas sensing applications. The sensors were exposed to various concentrations of hydrogen (H2) gas at room temperature. The sensitivity was measu...
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The present work reports on conductometric gas sensors based on metal oxide nanostructures developed in our laboratory in Brescia (Italy) showing their potentialities in term of sensitivity, selectivity and stability toward different molecules, including odorous compounds such as ammonia and hydrogen sulfide. The capability of these devices to discriminate different odors is further reported in...
متن کاملPlatform for a Hydrocarbon Exhaust Gas Sensor Utilizing a Pumping Cell and a Conductometric Sensor
Very often, high-temperature operated gas sensors are cross-sensitive to oxygen and/or they cannot be operated in oxygen-deficient (rich) atmospheres. For instance, some metal oxides like Ga(2)O(3) or doped SrTiO(3) are excellent materials for conductometric hydrocarbon detection in the rough atmosphere of automotive exhausts, but have to be operated preferably at a constant oxygen concentratio...
متن کاملComparison of Conductometric Gas Sensitivity of Surface Acoustic Wave Modes in Layered Structures
Properties of propagation modes for a layered ZnO/XZ LiNbO3 surface acoustic wave sensor have been investigated both theoretically and experimentally. By calculating the effective permittivity function, it was shown that after the ZnO deposition two distinct propagation modes have been generated: a Rayleigh and a shear horizontal. A layer of InOx was deposited to provide a conductometric sensin...
متن کاملConductometric Microbiosensors for Environmental Monitoring
This review presents the principles of conductometric measurements in ionic media and the equivalent electrical circuits of different designs for conductometric measurements. These types of measurements were first applied for monitoring biocatalytic reactions. The use of conductometric microtransducers is then presented and detailed in the case of pollutant detection for environmental monitorin...
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ژورنال
عنوان ژورنال: Journal of Sensors
سال: 2009
ISSN: 1687-725X,1687-7268
DOI: 10.1155/2009/659275