Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Patent
1993-09-10
1995-03-14
Redding, David A.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
422 98, 436136, 436137, 73 2331, 73 2332, 324 715, 338 34, 427 78, 4271263, 4271266, 204412, 204425, G01N 2746, G01N 3112
Patent
active
053975413
ABSTRACT:
An oxygen sensor is based on a thin film of a compound oxide supported on a substrate such as quartz. The compound oxide has a general formula ABO.sub.2.5+x, where A is an element of the lanthanum family, alkaline earth metal or their mixture, and B is a transition metal or a mixture of transition metals. X is a variable number, changing from about 0 to about 0.5 between the reversible oxygen-deplete and oxygen-rich forms of the oxide. In an elevated temperature and oxygen-containing atmosphere, the thin film can undergo reversible bulk oxidation resulting in a detectable change of its physical properties such as mass, optical transmissivity and electrical resistance.
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patent: 5071626 (1991-12-01), Tuller
Post, M. L. et al. "Thin Films of Non-Stoichiometric Perovskites as Potential Oxygen Sensors." Sensors and Actuators B, vol. B13, No. 1-3, pp. 272-275 5, 1993.
Warner, J. D. et al. "Laser ablated high T sub c superconducting thin YBa2Cu3O(7-x) films on substrates suitable for microwave applications". Conference on Advances in material science and applications of high temperature superconductors. Greenbelt, Md. (USA) 2-6 Apr. 1990. NTIS, PC AU7/MF A02.
Lal, R et al. "Sensor Activity In Pulsed Laser Deposited and Ion Implanted Tin Oxide Films". Thin Solid Films, 1991, V206, N1-2, Dec. 10, pp. 88-93.
National Research Council of Canada
Redding David A.
Szereszewski Juliusz
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