Selective gas detection using uncoated SAW delay lines

作者: M. Penza , V.I. Anisimkin , S.A. Maximov , L. Vasanelli

DOI: 10.1016/S0925-4005(97)00191-3

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摘要: Abstract Two approaches for gas recognition in binary mixtures have been developed imcoated surface acoustic wave (SAW) sensors based on thermal conductivity principle. The first approach utilizes the difference of ambient atmosphere with respect to a reference as general property test responses sensing elements. Selecting operating temperature and gas, single is distinctly detected. second inherent SAW devices, whose response monitored by coefficient delay (TCD). Choosing substrate material, rejected. Experimental measurements are shown discussed.

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