Surface acoustic wave hydrogen sensor

Details Surface acoustic wave hydrogen sensor Surface acoustic wave hydrogen sensor

2006-05-23

2006-05-23

Larkin, Daniel S. (Department: 2856)

Measuring and testing

Gas analysis

By vibration

C073S024060

Reexamination Certificate

active

07047792

ABSTRACT:
The present invention provides a delay line SAW device fabricated on a lithium niobate substrate and coated with a bilayer of nanocrystalline or other nanomaterials such as nanoparticles or nanowires of palladiumn and metal free pthalocyanine which will respond to hydrogen gas in near real time, at low (room) temperature, without being affected by CO, O2, CH4and other gases, in air ambient or controlled ambient, providing sensitivity to low ppm levels.

REFERENCES:
patent: 5045285 (1991-09-01), Kolesar, Jr.
patent: 6029500 (2000-02-01), Tom
Favier, Frederic et al., Hyrdrogen Sensors and Switches from Electrodeposited Palladium Mesowire Arrays, Science, Sep. 21, 2001, pp. 2227-2231, vol. 293.
Jakubik, Wieslaw et al., Bilayer Structure for Hydrogen Detection in a Surface Acoustic Wave Sensor System, Sensors and Actuators, 2002, pp. 265-271, B-82.

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