WO2000039570A3 - Sensor for detecting small concentrations of a target matter - Google Patents

Sensor for detecting small concentrations of a target matter Download PDF

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Publication number
WO2000039570A3
WO2000039570A3 PCT/US1999/030540 US9930540W WO0039570A3 WO 2000039570 A3 WO2000039570 A3 WO 2000039570A3 US 9930540 W US9930540 W US 9930540W WO 0039570 A3 WO0039570 A3 WO 0039570A3
Authority
WO
WIPO (PCT)
Prior art keywords
target matter
sensitive layer
chemical sensitive
sensor
small concentrations
Prior art date
Application number
PCT/US1999/030540
Other languages
French (fr)
Other versions
WO2000039570A2 (en
Inventor
Dipankar Chandra
Athanasios J Syllaios
Original Assignee
Raytheon Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Raytheon Co filed Critical Raytheon Co
Priority to AU41647/00A priority Critical patent/AU4164700A/en
Publication of WO2000039570A2 publication Critical patent/WO2000039570A2/en
Publication of WO2000039570A3 publication Critical patent/WO2000039570A3/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body

Abstract

A gas sensor is constructed to detect and measure concentrations of a target matter in either a microenvironment or in normal applications. A piezoresistive layer is mechanically coupled to a chemical sensitive layer. The reaction of the target matter with the chemical sensitive layer creates an induced strain in the chemical sensitive layer. This induced strain in the chemical sensitive layer in turn causes stress to be applied to the piezoresistive material. The applied stress results in a change in resistance of the piezoresistive material. This change in resistance is a measure of the concentration of the target matter that is interacting with the chemical sensitive layer.
PCT/US1999/030540 1998-12-28 1999-12-21 Sensor for detecting small concentrations of a target matter WO2000039570A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU41647/00A AU4164700A (en) 1998-12-28 1999-12-21 Sensor for detecting small concentrations of a target matter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US22139198A 1998-12-28 1998-12-28
US09/221,391 1998-12-28

Publications (2)

Publication Number Publication Date
WO2000039570A2 WO2000039570A2 (en) 2000-07-06
WO2000039570A3 true WO2000039570A3 (en) 2000-11-16

Family

ID=22827622

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/030540 WO2000039570A2 (en) 1998-12-28 1999-12-21 Sensor for detecting small concentrations of a target matter

Country Status (2)

Country Link
AU (1) AU4164700A (en)
WO (1) WO2000039570A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6866819B1 (en) 2001-11-13 2005-03-15 Raytheon Company Sensor for detecting small concentrations of a target matter
US20210262963A1 (en) * 2020-02-21 2021-08-26 Culvert Engineering Solutions, Llc Graphene-based chemical sensing device and system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5028394A (en) * 1990-04-13 1991-07-02 Bend Research, Inc. Chemical sensors
WO1994028372A1 (en) * 1993-05-25 1994-12-08 Rosemount Inc. Organic chemical sensor
US5417100A (en) * 1993-03-10 1995-05-23 Hughes Aircraft Company Reversible sensor for detecting solvent vapors
US5512882A (en) * 1991-08-07 1996-04-30 Transducer Research, Inc. Chemical sensing apparatus and methods
US5563341A (en) * 1995-06-07 1996-10-08 Fenner; Ralph L. Vapor pressure sensor and method
EP0821228A1 (en) * 1996-07-25 1998-01-28 HE HOLDINGS, INC. dba HUGHES ELECTRONICS Volatile organic compound sensors

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5028394A (en) * 1990-04-13 1991-07-02 Bend Research, Inc. Chemical sensors
US5512882A (en) * 1991-08-07 1996-04-30 Transducer Research, Inc. Chemical sensing apparatus and methods
US5417100A (en) * 1993-03-10 1995-05-23 Hughes Aircraft Company Reversible sensor for detecting solvent vapors
WO1994028372A1 (en) * 1993-05-25 1994-12-08 Rosemount Inc. Organic chemical sensor
US5563341A (en) * 1995-06-07 1996-10-08 Fenner; Ralph L. Vapor pressure sensor and method
EP0821228A1 (en) * 1996-07-25 1998-01-28 HE HOLDINGS, INC. dba HUGHES ELECTRONICS Volatile organic compound sensors

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BATTISTONI C ET AL: "INTERACTION OF MERCURY VAPOUR WITH THIN FILMS OF GOLD", APPLIED SURFACE SCIENCE,NL,AMSTERDAM, vol. 103, no. 2, 1 October 1996 (1996-10-01), pages 107 - 111, XP002061342, ISSN: 0169-4332 *

Also Published As

Publication number Publication date
WO2000039570A2 (en) 2000-07-06
AU4164700A (en) 2000-07-31

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