Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Reexamination Certificate
2007-03-06
2007-03-06
Sines, Brian (Department: 1743)
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
C422S050000, C422S083000, C422S088000, C422S094000, C073S001010, C073S001020, C073S023200, C436S043000, C436S149000, C436S139000, C436S144000, C029S592000, C029S592100, C438S048000, C438S049000, C438S139000, C438S144000, C977S700000, C977S720000, C977S708000, C977S762000, C977S773000, C977S784000
Reexamination Certificate
active
10160926
ABSTRACT:
A hydrogen gas sensor and/or switch fabricated from arrays nanowires composed of metal or metal alloys that have stable metal hydride phases. The sensor and/or switch response times make it quite suitable for measuring the concentration of hydrogen in a flowing gas stream. The sensor and/or switch preferably operates by measuring the resistance of several metal nanowires arrayed in parallel in the presence of hydrogen gas. The nanowires preferably comprise gaps or break junctions that can function as a switch that closes in the presence of hydrogen gas. Consequently, the conductivity of the nanowires of the sensor and/or switch increases in the presence of hydrogen
REFERENCES:
patent: 2307800 (1943-01-01), Norton
patent: 3559457 (1971-02-01), Collins
patent: 4490715 (1984-12-01), Kusanagi et al.
patent: 5221644 (1993-06-01), Berlin et al.
patent: 5262034 (1993-11-01), Kunz et al.
patent: 5367283 (1994-11-01), Lauf et al.
patent: 5394735 (1995-03-01), Fang et al.
patent: 5451920 (1995-09-01), Hoffheins et al.
patent: 6073478 (2000-06-01), Kuriakose et al.
patent: 6231744 (2001-05-01), Ying et al.
patent: 6232706 (2001-05-01), Dai et al.
patent: 6297063 (2001-10-01), Brown et al.
patent: 6337009 (2002-01-01), Nadanami et al.
patent: 6359288 (2002-03-01), Ying et al.
patent: 6528020 (2003-03-01), Dai et al.
patent: 6882051 (2005-04-01), Majumdar et al.
patent: 2002/0117659 (2002-08-01), Lieber et al.
patent: 2002/0158342 (2002-10-01), Tuominen et al.
patent: 2002/0172820 (2002-11-01), Majumdar et al.
patent: 2003/0089899 (2003-05-01), Lieber et al.
Tobi{hacek over (s)}ka et al., “An Integrated Optic Hydrogen Sensor Based on SPR on Palladium”, Sensors and Actuators B 74 (2001), 168-172.
Amandusson et al., “The effect of CO and O2on hydrogen permeation through a palladium membrane,” Applied Surface Science 153 (2000), 259-267.
Hoffheins et al., “Development of Low Cost Sensors for Hydrogen Safety Applications”, Proceedings of the 1999 U.S. DOE Hydrogen Program Review, NREL/CP-570-26938.
Sekimoto et al., “A fiber-optic evanescent-wave hydrogen gas sensor using palladium-supported tungsten oxide”, Sensors and Actuators B 66 (2000), 142-145.
Sutapun et al., “Pd-coated elastooptic fiber optic Bragg grating sensors for multiplexed hydrogen sensing”, Sensors and Actuators B 60 (1999), 27-34.
Pitts et al., “Interfacial stability of thin film hydrogen sensors”, Proceedings of the 1999 U.S. DOE Hydrogen Program Review, NREL/CP-570-2889.
Mandelis et al., “Pd/PVDF thin film hydrogen sensor based on laser-amplitude-modulated optical transmittance: dependence on H2concentration and device physics”, Sensors and Actuators B 49 (1998), 258-267.
Lauf et al., “Development of low-cost hydrogen sensors”, Proceedings of the 2000 Hydrogen Program Review, NREL/CP-570-28890.
Garcia et al., “Study of the thin-film palladium/hydrogen system by an optical transmittance method”, Rev. Sci. Instrum. 67(11), Nov. 1996, 3981-3983.
Bévenot et al., “Hydrogen leak detection using an optical fibre sensor for aerospace applications”, Sensors and Actuators B 67 (2000), 57-67.
Dwivedi et al., “Sensing properties of palladium-gate MOS (Pd-MOS) hydrogen sensor-based on plasma grown silicon dioxide”, Sensors and Actuators B 71 (2000), 161-168.
Christofides et al., “Solid-state sensors for trace hydrogen gas detection”, J. Appl. Phys. 68 (6), Sep. 15, 1990, R1-R30.
Shaver, “Bimetal Strip Hydrogen Gas Detectors”, Review of Scientific Instruments, vol. 40, No. 7 (Jul. 1969), 901-905.
Thomas et al., “Sensors for detecting molecular hydrogen based on Pd metal alloys”, J. Electrochem. Soc., vol. 144, No. 9 (Sep. 1997), 3245-3249.
Bucur, R.V. et al., “The Kinetics of Hydrogen (Deuterium) Sorption by Thin Palladium Layers Studied With a Piezoelectric Quartz Crystal Microbalance”, Surf. Sci. 54 (1976), 477-488.
Frazier, G. A., Glosser, R., “Phase diagrams of thin films of the palladium hyrogen system using a quartz crystal thickness monitor”, J. Phys. D: Appl. Phys., vol. 12 (1979), L113-L115.
DiMeo, F. J.; Chen, B. “Microhotplate Based H2Gas Sensors”, Proc. of the 2000 Hydrogen Prog. Rev.; U.S. Department of Energy, 1-9.
Butler, M. A., “Micromirror optical-fiber hydrogen sensor”, Sensors and Actuators B 22 (1994), 155-163.
Okuhara, Y.; Takata, “Recovery chracteristics of optical hydrogen sensor using Pd thin film: Behavior of three-stage hydrogen desorption”, M. Bulletin of Materials Science, vol. 22(N2) (1999), 85-87.
Formoso, M. A.; Maclay, G. J., “Effect of hydrogen and Carbon Monoxide on the Interface State Density MOS Gas Sensors with Ultra-Thin Palladium Gates”, Sensors and Actuators B 2 (1990) 11-22.
Lundstrom, I., Hydrogen sensitive MOS-structures Part 1: Principles and Applications, Sensor and Actuators (1981), 403-426.
Ruths, P.F.; et al., IEEE Trans. Electron Devices, vol. ED28, No. 9 (1981), 1003-1009.
Shivaraman, M. S. et al., Hyrogen sensitivity of palladium-thin-oxide-silicon Schottky barriers, Electron. Lett. 12, No. 18 (1976), 484-485.
Lewis, F. A., The Palladium Hydrogen System; Academic Press: New York, 1967.
Favier, F. et al., “Hydrogen sensors and switches from electrodeposited palladium mesowire arrays”, Science vol. 293 (2001), 2227-2230.
Liu, H.; Penner, R. M., “Size-selective electrodeposition of mesoscale metal particles in the uncoupled limit”, J. Phys. Chem. B 104 (2000), 9131-9139.
Favier Fred
Penner Reginald Mark
Walter Erich C.
Orrick Herrington & Sutcliff LLP
Regents of the University of California
LandOfFree
Hydrogen gas sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydrogen gas sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrogen gas sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3755284