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Title: Microcantilever-based gas sensor employing two simultaneous physical sensing modes

Abstract

According to one embodiment, a system for detecting and identifying gases includes a piezoresistive microcantilever transducer, wherein dissipation of heat from the piezoresistive microcantilever into one or more gases is measured by changes in an electrical resistance of the piezoresistor, a vibrating microcantilever transducer, wherein shifts are measured in resonant frequency of the vibrating microcantilever due to viscous damping thereof by the one or more gases, and a subsystem for correlating the measured resistance changes and the resonant frequency shifts to the one or more gases. In another embodiment, a method for detecting and identifying one or more gases includes determining dissipation of heat from a microcantilever into one or more gases, and determining shifts in resonant frequency of the microcantilever due to viscous damping thereof by the one or more gases. Other systems, methods, and computer program products are also described according to more embodiments.

Inventors:
; ; ; ; ;
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1134683
Patent Number(s):
8762075
Application Number:
12/852,416
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2010 Aug 06
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Loui, Albert, Sirbuly, Donald J, Elhadj, Selim, McCall, Scott K, Hart, Bradley R, and Ratto, Timothy V. Microcantilever-based gas sensor employing two simultaneous physical sensing modes. United States: N. p., 2014. Web.
Loui, Albert, Sirbuly, Donald J, Elhadj, Selim, McCall, Scott K, Hart, Bradley R, & Ratto, Timothy V. Microcantilever-based gas sensor employing two simultaneous physical sensing modes. United States.
Loui, Albert, Sirbuly, Donald J, Elhadj, Selim, McCall, Scott K, Hart, Bradley R, and Ratto, Timothy V. Tue . "Microcantilever-based gas sensor employing two simultaneous physical sensing modes". United States. https://www.osti.gov/servlets/purl/1134683.
@article{osti_1134683,
title = {Microcantilever-based gas sensor employing two simultaneous physical sensing modes},
author = {Loui, Albert and Sirbuly, Donald J and Elhadj, Selim and McCall, Scott K and Hart, Bradley R and Ratto, Timothy V},
abstractNote = {According to one embodiment, a system for detecting and identifying gases includes a piezoresistive microcantilever transducer, wherein dissipation of heat from the piezoresistive microcantilever into one or more gases is measured by changes in an electrical resistance of the piezoresistor, a vibrating microcantilever transducer, wherein shifts are measured in resonant frequency of the vibrating microcantilever due to viscous damping thereof by the one or more gases, and a subsystem for correlating the measured resistance changes and the resonant frequency shifts to the one or more gases. In another embodiment, a method for detecting and identifying one or more gases includes determining dissipation of heat from a microcantilever into one or more gases, and determining shifts in resonant frequency of the microcantilever due to viscous damping thereof by the one or more gases. Other systems, methods, and computer program products are also described according to more embodiments.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {6}
}

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Works referenced in this record:

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