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Title: Multifunctional potentiometric gas sensor array with an integrated temperature control and temperature sensors

Patent ·
OSTI ID:1179237

Embodiments of the subject invention relate to a gas sensor and method for sensing one or more gases. An embodiment incorporates an array of sensing electrodes maintained at similar or different temperatures, such that the sensitivity and species selectivity of the device can be fine tuned between different pairs of sensing electrodes. A specific embodiment pertains to a gas sensor array for monitoring combustion exhausts and/or chemical reaction byproducts. An embodiment of the subject device related to this invention operates at high temperatures and can withstand harsh chemical environments. Embodiments of the device are made on a single substrate. The devices can also be made on individual substrates and monitored individually as if they were part of an array on a single substrate. The device can incorporate sensing electrodes in the same environment, which allows the electrodes to be coplanar and, thus, keep manufacturing costs low. Embodiments of the device can provide improvements to sensitivity, selectivity, and signal interference via surface temperature control.

Research Organization:
Univ. of Florida, Gainesville, FL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FG26-02NT41533
Assignee:
University of Florida Research Foundation, Inc. (Gainesville, FL)
Patent Number(s):
9,027,387
Application Number:
12/682,365
OSTI ID:
1179237
Resource Relation:
Patent File Date: 2008 Oct 09
Country of Publication:
United States
Language:
English

References (14)

Multifunctional Gas Sensor Array with Improved Selectivity Through Local Thermal Modification conference January 2008
Process for operating a solid-state oxygen microsensor patent February 1995
Solid-state oxygen microsensor and thin structure therefor patent February 1995
Sensor and method for accurately measuring concentrations of oxide compounds in gas mixtures patent March 1995
Electrocatalytic cermet gas detector/sensor patent July 1995
Solid-state gas sensors patent January 1997
Electrochemical cells and methods using perovskites patent July 1997
Sensors for detecting analytes in fluids patent August 1998
Gas composition sensor and method for separately detecting components of exhaust gas to diagnose catalytic converter performance patent March 1999
Measuring NOx concentration patent April 2003
Solid state potentiometric gaseous oxide sensor patent July 2003
NOx sensor control circuit unit and NOx sensor system using the same patent October 2003
Sensors for oxidizing gases patent December 2003
Sensor element of a gas sensor patent May 2006

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