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Title: Nanocomposite thin films for optical gas sensing

Abstract

The disclosure relates to a plasmon resonance-based method for gas sensing in a gas stream utilizing a gas sensing material. In an embodiment the gas stream has a temperature greater than about 500.degree. C. The gas sensing material is comprised of gold nanoparticles having an average nanoparticle diameter of less than about 100 nanometers dispersed in an inert matrix having a bandgap greater than or equal to 5 eV, and an oxygen ion conductivity less than approximately 10.sup.-7 S/cm at a temperature of 700.degree. C. Exemplary inert matrix materials include SiO.sub.2, Al.sub.2O.sub.3, and Si.sub.3N.sub.4 as well as modifications to modify the effective refractive indices through combinations and/or doping of such materials. Changes in the chemical composition of the gas stream are detected by changes in the plasmon resonance peak. The method disclosed offers significant advantage over active and reducible matrix materials typically utilized, such as yttria-stabilized zirconia (YSZ) or TiO.sub.2.

Inventors:
;
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1134060
Patent Number(s):
8,741,657
Application Number:
13/775,447
Assignee:
U.S. Department of Energy (Washington, DC)
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Feb 25
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats

Ohodnicki, Paul R, and Brown, Thomas D. Nanocomposite thin films for optical gas sensing. United States: N. p., 2014. Web.
Ohodnicki, Paul R, & Brown, Thomas D. Nanocomposite thin films for optical gas sensing. United States.
Ohodnicki, Paul R, and Brown, Thomas D. Tue . "Nanocomposite thin films for optical gas sensing". United States. https://www.osti.gov/servlets/purl/1134060.
@article{osti_1134060,
title = {Nanocomposite thin films for optical gas sensing},
author = {Ohodnicki, Paul R and Brown, Thomas D},
abstractNote = {The disclosure relates to a plasmon resonance-based method for gas sensing in a gas stream utilizing a gas sensing material. In an embodiment the gas stream has a temperature greater than about 500.degree. C. The gas sensing material is comprised of gold nanoparticles having an average nanoparticle diameter of less than about 100 nanometers dispersed in an inert matrix having a bandgap greater than or equal to 5 eV, and an oxygen ion conductivity less than approximately 10.sup.-7 S/cm at a temperature of 700.degree. C. Exemplary inert matrix materials include SiO.sub.2, Al.sub.2O.sub.3, and Si.sub.3N.sub.4 as well as modifications to modify the effective refractive indices through combinations and/or doping of such materials. Changes in the chemical composition of the gas stream are detected by changes in the plasmon resonance peak. The method disclosed offers significant advantage over active and reducible matrix materials typically utilized, such as yttria-stabilized zirconia (YSZ) or TiO.sub.2.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {6}
}

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Works referenced in this record:

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