Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Hydrogen, sensors

Hydrogen Sensor Proteins and the Control of Hydrogenase Expression... [Pg.289]

Resonant photoacoustic gas spectrometry was adapted to fiber optic sensor technology32 as early as in 1984. A Mach-Zehnder arrangement was combined with a resonant photoacoustic cell for gap analysis. The pollutant gas NO2 was detectable in a concentration of 0.5 ppm. In a smart optical fiber hydrogen sensor, the fiber is coated with palladium metal which expands on exposure to hydrogen. This changes the effective optical path length of the fiber, which is detected by interferometry33. [Pg.23]

Butler M.A., Optical fiber hydrogen sensor, Appl. Phys. Lett. 1984 45 1007. [Pg.40]

Pitts, R.R., Smith, D., Lee, S., and Tracy, E. Interfacial Stability of Thin Film Hydrogen Sensors, FY 2004 Annual Progress Report, VI.3, DOE Hydrogen Program, 2004. [Pg.378]

Metal Oxide and Catalytic Bead Hydrogen Sensors.511... [Pg.495]

The four key functional parameters to be satisfied by any hydrogen sensor to gain wide acceptance for use within the hydrogen infrastructure [2] of production, storage, transportation, and utilization are... [Pg.497]

There are three major classes of palladium-based hydrogen sensors [4], The most popular class of palladium-based sensors is based on palladium resistors. A thin film of palladium deposited between two metal contacts shows a change in conductivity on exposure to hydrogen due to the phase transition in palladium. The palladium field-effect transistors (FETs) or capacitors constitute the second class, wherein the sensor architecture is in a transistor mode or capacitor configuration. The third class of palladium sensors includes optical sensors consisting of a layer of palladium coated on an optically active material that transforms the hydrogen concentration to an optical signal. [Pg.502]

Operation Mechanisms of Solid-State Sensors 15.3.1 Theory of Palladium-Based Hydrogen Sensors... [Pg.503]

Several types of palladium-based hydrogen sensors have been reported in the literature. The most notable ones are based on Pd thin-film resistors, FETs, Pd nanowires, Pd nanoparticle networks, Pd nanoclusters, and Pd nanotubes as shown in Table 15.2. [Pg.504]

Development required Fabrication process not repeatable Possible interference from CO and humidity (characteristics of all Pd-based hydrogen sensors)... [Pg.505]

Schematic representation of the operation of the nanoparticle network hydrogen sensor. Schematic representation of the operation of the nanoparticle network hydrogen sensor.
See other pages where Hydrogen, sensors is mentioned: [Pg.328]    [Pg.337]    [Pg.337]    [Pg.339]    [Pg.183]    [Pg.27]    [Pg.365]    [Pg.365]    [Pg.495]    [Pg.495]    [Pg.495]    [Pg.495]    [Pg.495]    [Pg.496]    [Pg.496]    [Pg.498]    [Pg.499]    [Pg.499]    [Pg.500]    [Pg.501]    [Pg.503]    [Pg.504]    [Pg.504]    [Pg.505]    [Pg.505]    [Pg.506]    [Pg.506]    [Pg.506]    [Pg.507]    [Pg.508]    [Pg.508]    [Pg.508]    [Pg.509]    [Pg.510]    [Pg.511]    [Pg.512]   
See also in sourсe #XX -- [ Pg.183 ]

See also in sourсe #XX -- [ Pg.29 , Pg.30 ]

See also in sourсe #XX -- [ Pg.412 ]

See also in sourсe #XX -- [ Pg.199 ]

See also in sourсe #XX -- [ Pg.37 , Pg.76 ]

See also in sourсe #XX -- [ Pg.227 , Pg.245 , Pg.255 ]



SEARCH



© 2024 chempedia.info