Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Patent
1989-09-05
1991-09-03
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
422 83, 204406, 204400, G01N 2700
Patent
active
050452851
ABSTRACT:
A sensor having an interdigitated gate electrode field effect transistor (IGEFET) coupled to an electron beam evaporated copper phthalocyanine thin film is used to selectively detect parts-per-billion concentration levels of atmosphere contaminants such as nitrogen dioxide (NO.sub.2) and diisopropyl methylphosphonate (DIMP). The sensor is excited with a voltage pulse, and its time- and frequency-domain response are examined. The envelopes of the magnitude of the normalized difference frequency spectrums reveal features which unambiguously distinguish the NO.sub.2 and DIMP exposures.
REFERENCES:
patent: 3469184 (1969-09-01), Lambe et al.
patent: 3507145 (1970-04-01), Lob et al.
patent: 3710778 (1973-01-01), Cornelius
patent: 3719564 (1973-03-01), Lilly, Jr. et al.
patent: 3831432 (1974-08-01), Cox
patent: 3910763 (1975-10-01), Poziomek et al.
patent: 4020830 (1977-05-01), Johnson et al.
patent: 4158807 (1979-06-01), Senturia
patent: 4180771 (1979-12-01), Guckel
patent: 4218298 (1980-08-01), Shimada et al.
patent: 4238757 (1980-12-01), Schenck
patent: 4322680 (1982-03-01), Janata et al.
patent: 4368480 (1983-01-01), Senturia
patent: 4397714 (1983-08-01), Janata et al.
patent: 4437969 (1984-03-01), Covington et al.
patent: 4542640 (1985-08-01), Clifford
patent: 4636767 (1987-01-01), Barger et al.
patent: 4654624 (1987-03-01), Hagan et al.
patent: 4670405 (1987-06-01), Stetter et al.
patent: 4725733 (1988-02-01), Horman et al.
S. D. Senturia et al., The Charge-Flow Transistor: A New MOS Device, Appl Physics Letter; vol. 30, No. 2, pp. 106-108, Jan. 15, 1977.
R. L. Smith et al., Transient Phenomena in Ion Sensitive Field Effect Transistors, Journal of Hu Electro Chemical Society, vol. 127, No. 7, pp. 1599-1603,
S. L. Garverick, et al., An MOS Chip for Surface Impedance Measurement and Moisture Mon, 26th Int. Electron Dev. Meet. Inter. Elect. Services, Meeting Tech. Digest vol. 7, Paper 86, pp. 685-688, Published by the Institute of Electrical and Electronic Engineers, New York, NY.
Chemical Selectively of Field-Effect Transistors, Sensors and Actuators, 12 1987, pp. 121-128-Aug. 26, 1986.
Journal of the Chemical Society, A Journal of Physical Chemistry, Van Ewyk et al., Dec. 1980.
Micro Electronic Circuits, Sedra et al., 1982, HRW Series in Electrical and Computer Engineering, Semi Conductor Devices Physics and Technology S. M. Sze, John Wiley & Sons 1985.
Collins Laura E.
Hollins Gerald B.
Singer Donald J.
United States of America As Represented by the Secretary of the
Warden Robert J.
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