Hydrogen sensor utilizing rare earth metal thin film detection e

Details Hydrogen sensor utilizing rare earth metal thin film detection e Hydrogen sensor utilizing rare earth metal thin film detection e

1998-03-17

1999-12-28

Williams, Hezron

Measuring and testing

Gas analysis

With compensation detail

73 3106, 422 57, 422 88, 257 2, G01N 700, G01N 2100, G01N 3096, H01L 4700

Patent

active

060065826

ABSTRACT:
A hydrogen sensor for the detection of hydrogen, e.g., in an environment susceptible to the incursion or generation of hydrogen. The sensor includes a rare earth metal thin film arranged for exposure to the environment and exhibiting a detectable change of physical property, e.g., optical transmissivity, electrical resistivity, magneto-resistance, and/or photoconductivity, when the rare earth metal thin film is contacted with hydrogen gas. The sensor may include an output assembly for converting the physical property change to a perceivable output. The rare earth metal thin film may correspondingly be used for signal processing applications, in which the rare earth metal thin film is contacted with hydrogen gas, and a predetermined voltage signal is selectively imposed across the rare earth metal thin film, to selectively electrically switch the film between mirror and window states, with a response being generated according to which of the mirror and window states is present.

REFERENCES:
patent: 3768975 (1973-10-01), Toy
patent: 3951603 (1976-04-01), Obayashi et al.
patent: 3953173 (1976-04-01), Obayashi et al.
patent: 4574095 (1986-03-01), Baum et al.
patent: 4661320 (1987-04-01), Ito et al.
patent: 4836012 (1989-06-01), Doty et al.
patent: 4892834 (1990-01-01), Rauh
patent: 5134248 (1992-07-01), Kiec et al.
patent: 5520753 (1996-05-01), Hunter
patent: 5635729 (1997-06-01), Griessen et al.
patent: 5668301 (1997-09-01), Hunter
patent: 5670115 (1997-09-01), Cheng et al.
patent: 5733506 (1998-03-01), Silver et al.
Huiberts, J.N.,; Griessen, R.; Rector, J.R.; Wijngaarden, R.J.; Dekker, J.P.; deGroot, D.G.; Koeman, N.J. "Yttrium and Lanthanum Hydride Films with Switchable Optical Properties", Nature, 1996, vol. 380, pp. 231-234.
Yannopoulos, L.N.; Edwards, R.K.; Wahlbeck, P.G., "The Thermodynamics of the Yttrium-Hydrogen System", J. Phys. Chem. 1965, vol. 69, pp. 2510-2515.
Flotow,H.E.; Osborne, D.W.; Otto, K.; Abraham, B.M., "YH.sub.3 and YD.sub.3 : Heat Capacities and Thermodynamic Functions from 15.degree. to 350.degree. K and Infrared Absorption Spectra", J Chem. Phys. 1963, vol. 38, pp. 2620-2626.
Vajda, P. in Handbook on the Physics and Chemistry of Rare Earths, vol. 20 (eds Gschneidner, K.A.; Eyring, L.) Amsterdam, Elsevier, 1995, pp. 207-291.
Mueller, W.M.;Blackledge, J.P.; Libowitz, G.G. in Metal Hydrides (eds Mueller, W.M.;Blackledge, J.P.; Libowitz, G.G.) New York, Academic, 1968, Ch. 9 & 10.
Encyclopedia of Inorganic Chemistry, ed. R.Bruce King, John Wiley & Sons, NY, vol. 6, pp. 3010-3011.
e-mail forwarded to Greg Hall (NASA Technical Monitor) on May 29, 1997.
Chenier, J.P. in Survey of Industrial Chemistry, New York, VCH, 1992, p. 60.
Ahuja, R.; Johansson, B.; Wills, J.M.; Eriksson, O. "On the Semiconducting State and Structural Properties of YH.sub.3 from First Principles Theory"" Appl. Phys. Lett., 1997, vol. 71, No. 24, pp. 3498-3500.
Van der Sluis, P.; Ouwerkek, M.; Duine, P.A., "Optical Switches Based on Magnesium Lanthanide Alloy Hydrides", Appl. Phys. Lett. 1997, vol. 70, No. 25, pp. 3356-3358.
Notten, P.H.L.; Kremers, M.; Griessen, R., "Optical Switching of Y-Hydride Thin Film Electrodes", J. Electrochem. Soc. 1996, vol. 143, No. 10, pp. 3348-3353.
Vourvoulias, B.; Kwon, B., "Now You See it", Newsweek, 1998, Mar. 2, 1998, p. 13.
Freemantle, M., "Hydride Fims Display Mirror-Window Changes", C&EN, 1996, p. 9.
Evans, W.J. ; Drummond, D. K. ; Hanusa, T.P.; Doedens, R.J. Bis(1,3-dimethylcycloentadienyl)yttrium Complexes. Synthesis and X-ray Crystallographic Characterization of [(1,3-Me.sub.2 C.sub.5 H.sub.3).sub.2 Y(.mu.-Me)].sub.2, [(1,3-Me.sub.2 C.sub.5 H.sub.3).sub.2 Y(.mu.-Me)].sub.3, and [(1,3-Me.sub.2 C.sub.5 H.sub.3).sub.2 (THF)Y(.mu.-Me)].sub.2, Organmetallics 1987, vol. 6, pp. 2279-2285.
Jeske, G.; Lauke, H.; Mauermann, H.; Swepston, P.N.; Schumann, H.; Marks, T.J., "Highly Reactive Organolanthanides. Systematic Routes to and Olefin Chemistry and Late Bis(pentamethylcyclopentadienyl) 4f Hydrocarbyl and Hydride Cmplexes", J. Am. Chem. Soc. 1985, vol. 107, pp. 8091-8103.
Wilkinson, G.; Birmingham, J.M., "Cycloppentadienyl Compounds of Sc, Y, La, Ce and Some Lanthanide Elements", J. Am. Chem. Soc. 1954 vol. 76, p. 6210.
Wayda, A.L., "Mono-, bis- and tris(t-butylcyclopentadienyl)lanthanoid Complexes", J. Organomet. Chem. 1989, vol. 361, p. 73.
Tsutsui, M.; Gysling, H.J., "A New Series of Organolanthanides: Ln(indenyl).sub.3 ", J. Am. Chem. Soc. 1969, vol. 91, pp. 3175-3178.
Schulz, D.L.; Hinds, B.J.; Neumayer, D.A.; Stern, C.L.; Marks, T.J.., "Barium .beta.-Ketoiminate Complexes Containing Appended Ether Lariats. Synthesis, Characterization, and Implementation as Fluorine Free Barium MOCVD Precursors", Chem. Mater. 1993, vol. 5, pp. 1605-1617.
McGeachin, S.G., "Synthesis and Properties of Some B-Diketimines Derived From Acetylacetone, And Their Metal Complexes", Can. J. Chem. 1968, vol. 46, pp. 1903-1912.
Van Buskirk, P.C.;Kirlin, P.S.., "BaTiO.sub.3 --SrTiO.sub.3 DRAM's Final Report", Phase I Final Report, Contract #DNA001-91-C-0078, Feb., 1991.
Zhang, J.; Gardiner, R.; Kirlin, P.S., Layered Superconductors: Fabrication, Properties and Applications, ed. D.T. Shaw and T.R. Schneider, MRS Proceedings, 1992, vol. 275, p. 419.
Bhandari, Gautam, P.I., "Lightweight and Inexpensive Hydrogen Selective Sensor", NASA SBIR Phase II, Sep. 16, 1997, Proposal No., 96-1-Phase II 16.12 1100, pp. 1-46.
Bhandari, Gautam, P.I., "Lightweight and Inexpensive Hydrogen Selective Sensor", NASA SBIR 96-1 Solicitation, Aug. 27, 1996, Proposal No., 96-1-16.12 1100, pp. 1-24.
"Phase Change Materials lead to Hydrogen Sensors" by Bhandari, Gautam, Sensor Technology, vol. 13, No. 8, pp. 1-2, (May, 1997).

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