Sensitive substance and surface acoustic wave gas sensor...

Details Sensitive substance and surface acoustic wave gas sensor... Sensitive substance and surface acoustic wave gas sensor...

2006-05-23

2006-05-23

Garber, Charles (Department: 2856)

Measuring and testing

Gas analysis

By vibration

Reexamination Certificate

active

07047793

ABSTRACT:
A surface acoustic wave gas sensor for detecting predetermined substances includes a piezoelectric substrate, an input transducer and an output transducer which is formed on the piezoelectric substrate, and a sensitive film which is formed between the input transducer and the output transducer and detects at least one of acetone, benzene, dichloroethane, ethanol, and toluene. The sensitive film includes mercaptoundecanoic acid and CMP composed of cellulose nitrate, dibutyl phthalate, compound of benzene and ethanol, ethyl acetate. The surface acoustic wave gas sensor can quickly detect even small amounts of these substances.

REFERENCES:
patent: 3938263 (1976-02-01), Tate
patent: 5837446 (1998-11-01), Cozzette et al.
patent: 6004494 (1999-12-01), Debe
patent: 9-210975 (1997-08-01), None
English language abstract and machine translation of Japanese Patent Publication 09-210975 of Aug. 15, 1997.
English language abstract of Japanese Publication No. 09-210975.

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