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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):
8741657
Application Number:
13/775,447
Assignee:
U.S. Department of Energy (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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:

Insight into Gold Nanoparticle–Hydrogen Interaction: A Way To Tailor Nanoparticle Surface Charge and Self-Assembled Monolayer Chemisorption
journal, September 2011


Hydrogen Chemisorption on Al 2 O 3 -Supported Gold Catalysts
journal, August 2005


Plasmonic Based Kinetic Analysis of Hydrogen Reactions within Au−YSZ Nanocomposites
journal, March 2011


Gas Sensing with High-Resolution Localized Surface Plasmon Resonance Spectroscopy
journal, December 2010