Electronically conducting metal oxide nanoparticles and films for optical sensing applications

Ohodnicki, Paul R.; Wang, Congjun; Andio, Mark A

Advanced Search OptionsAdvanced Search queries use a traditional Term Search. For more info, see our FAQ.

All Fields:

Patent Title:

Abstract:

Assignee:

Inventor(s):

Patent Number:

Patent Classification (CPC):

All Classifications
A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
A41 - wearing apparel
A42 - headwear
A43 - footwear
A44 - haberdashery
A45 - hand or travelling articles
A46 - brushware
A47 - furniture
A61 - medical or veterinary science
A62 - life-saving
A63 - sports
A99 - subject matter not otherwise provided for in this section
B - performing operations
B01 - physical or chemical processes or apparatus in general
B02 - crushing, pulverising, or disintegrating
B03 - separation of solid materials using liquids or using pneumatic tables or jigs
B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes
B05 - spraying or atomising in general
B06 - generating or transmitting mechanical vibrations in general
B07 - separating solids from solids
B08 - cleaning
B09 - disposal of solid waste
B21 - mechanical metal-working without essentially removing material
B22 - casting
B23 - machine tools
B24 - grinding
B25 - hand tools
B26 - hand cutting tools
B27 - working or preserving wood or similar material
B28 - working cement, clay, or stone
B29 - working of plastics
B30 - presses
B31 - making articles of paper, cardboard or material worked in a manner analogous to paper
B32 - layered products
B33 - additive manufacturing technology
B41 - printing
B42 - bookbinding
B43 - writing or drawing implements
B44 - decorative arts
B60 - vehicles in general
B61 - railways
B62 - land vehicles for travelling otherwise than on rails
B63 - ships or other waterborne vessels
B64 - aircraft
B65 - conveying
B66 - hoisting
B67 - opening, closing {or cleaning} bottles, jars or similar containers
B68 - saddlery
B81 - microstructural technology
B82 - nanotechnology
B99 - subject matter not otherwise provided for in this section
C - chemistry
C01 - inorganic chemistry
C02 - treatment of water, waste water, sewage, or sludge
C03 - glass
C04 - cements
C05 - fertilisers
C06 - explosives
C07 - organic chemistry
C08 - organic macromolecular compounds
C09 - dyes
C10 - petroleum, gas or coke industries
C11 - animal or vegetable oils, fats, fatty substances or waxes
C12 - biochemistry
C13 - sugar industry
C14 - skins
C21 - metallurgy of iron
C22 - metallurgy
C23 - coating metallic material
C25 - electrolytic or electrophoretic processes
C30 - crystal growth
C40 - combinatorial technology
C99 - subject matter not otherwise provided for in this section
D - textiles
D01 - natural or man-made threads or fibres
D02 - yarns
D03 - weaving
D04 - braiding
D05 - sewing
D06 - treatment of textiles or the like
D07 - ropes
D10 - indexing scheme associated with sublasses of section d, relating to textiles
D21 - paper-making
D99 - subject matter not otherwise provided for in this section
E - fixed constructions
E01 - construction of roads, railways, or bridges
E02 - hydraulic engineering
E03 - water supply
E04 - building
E05 - locks
E06 - doors, windows, shutters, or roller blinds in general
E21 - earth drilling
E99 - subject matter not otherwise provided for in this section
F - mechanical engineering
F01 - machines or engines in general
F02 - combustion engines
F03 - machines or engines for liquids
F04 - positive - displacement machines for liquids
F05 - indexing schemes relating to engines or pumps in various subclasses of classes f01-f04
F15 - fluid-pressure actuators
F16 - engineering elements and units
F17 - storing or distributing gases or liquids
F21 - lighting
F22 - steam generation
F23 - combustion apparatus
F24 - heating
F25 - refrigeration or cooling
F26 - drying
F27 - furnaces
F28 - heat exchange in general
F41 - weapons
F42 - ammunition
F99 - subject matter not otherwise provided for in this section
G - physics
G01 - measuring
G02 - optics
G03 - photography
G04 - horology
G05 - controlling
G06 - computing
G07 - checking-devices
G08 - signalling
G09 - education
G10 - musical instruments
G11 - information storage
G12 - instrument details
G16 - information and communication technology [ict] specially adapted for specific application fields
G21 - nuclear physics
G99 - subject matter not otherwise provided for in this section
H - electricity
H01 - basic electric elements
H02 - generation
H03 - basic electronic circuitry
H04 - electric communication technique
H05 - electric techniques not otherwise provided for
H99 - subject matter not otherwise provided for in this section
Y - new / cross sectional technologies
Y02 - technologies or applications for mitigation or adaptation against climate change
Y04 - information or communication technologies having an impact on other technology areas
Y10 - technical subjects covered by former uspc

More Options ...

Title: Electronically conducting metal oxide nanoparticles and films for optical sensing applications

Abstract

The disclosure relates to a method of detecting a change in a chemical composition by contacting a conducting oxide material with a monitored stream, illuminating the conducting oxide material with incident light, collecting exiting light, monitoring an optical signal based on a comparison of the incident light and the exiting light, and detecting a shift in the optical signal. The conducting metal oxide has a carrier concentration of at least 10.sup.17/cm.sup.3, a bandgap of at least 2 eV, and an electronic conductivity of at least 10.sup.-1 S/cm, where parameters are specified at the gas stream temperature. The optical response of the conducting oxide materials is proposed to result from the high carrier concentration and electronic conductivity of the conducting metal oxide, and the resulting impact of changing gas atmospheres on that relatively high carrier concentration and electronic conductivity. These changes in effective carrier densities and electronic conductivity of conducting metal oxide films and nanoparticles are postulated to be responsible for the change in measured optical absorption associated with free carriers. Exemplary conducting metal oxides include but are not limited to Al-doped ZnO, Sn-doped In.sub.2O.sub.3, Nb-doped TiO.sub.2, and F-doped SnO.sub.2.

Inventors:: Ohodnicki, Jr., Paul R.; Wang, Congjun; Andio, Mark A

Issue Date:: Tue Sep 16 00:00:00 EDT 2014

Research Org.:: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1159514

Patent Number(s):: 8836945

Application Number:: 14/135,691

Assignee:: U.S. Department of Energy (Washington, DC)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

Show more

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N21/783 - {for analysing gases}
G01N2201/0826 - Fibre array at source, distributing

Show less

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats


                    Ohodnicki, Jr., Paul R., Wang, Congjun, and Andio, Mark A. Electronically conducting metal oxide nanoparticles and films for optical sensing applications.  United States: N. p., 2014. 
        Web.

Copy to clipboard


                    Ohodnicki, Jr., Paul R., Wang, Congjun, & Andio, Mark A. Electronically conducting metal oxide nanoparticles and films for optical sensing applications.  United States.

Copy to clipboard


                    Ohodnicki, Jr., Paul R., Wang, Congjun, and Andio, Mark A. Tue .  
        "Electronically conducting metal oxide nanoparticles and films for optical sensing applications".  United States.  https://www.osti.gov/servlets/purl/1159514.

Copy to clipboard


                    
@article{osti_1159514,

  title        = {Electronically conducting metal oxide nanoparticles and films for optical sensing applications},

  author       = {Ohodnicki, Jr., Paul R. and Wang, Congjun and Andio, Mark A},

  abstractNote = {The disclosure relates to a method of detecting a change in a chemical composition by contacting a conducting oxide material with a monitored stream, illuminating the conducting oxide material with incident light, collecting exiting light, monitoring an optical signal based on a comparison of the incident light and the exiting light, and detecting a shift in the optical signal. The conducting metal oxide has a carrier concentration of at least 10.sup.17/cm.sup.3, a bandgap of at least 2 eV, and an electronic conductivity of at least 10.sup.-1 S/cm, where parameters are specified at the gas stream temperature. The optical response of the conducting oxide materials is proposed to result from the high carrier concentration and electronic conductivity of the conducting metal oxide, and the resulting impact of changing gas atmospheres on that relatively high carrier concentration and electronic conductivity. These changes in effective carrier densities and electronic conductivity of conducting metal oxide films and nanoparticles are postulated to be responsible for the change in measured optical absorption associated with free carriers. Exemplary conducting metal oxides include but are not limited to Al-doped ZnO, Sn-doped In.sub.2O.sub.3, Nb-doped TiO.sub.2, and F-doped SnO.sub.2.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Sep 16 00:00:00 EDT 2014},

  month        = {Tue Sep 16 00:00:00 EDT 2014}

}

Copy to clipboard

Patent:

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Method for measuring the level of hydrogen sulfide in geothermal steam
patent, October 1982

Smith, Robert F.; Walters, Dwight E.
US Patent Document 4,355,997
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4355997

In-situ gas analyzer
patent, December 1986

Lord, Harry C.
US Patent Document 4,632,563
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4632563

Series cell light extinction monitor
patent, October 1990

Novick, Vincent J.
US Patent Document 4,966,462
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4966462

SO.sub.2 sensor
patent, August 1994

Dalla Betta, Ralph A.; Sheridan, David R.
US Patent Document 5,338,515
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5338515

Process and device for determining the para content of a hydrogen gas stream
patent, December 1996

Wanner, Manfred
US Patent Document 5,580,793
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5580793

Automotive hydrocarbon adsorber system
patent, August 1999

Brown, Jacqueline Leslie; Ketcham, Thomas Dale
US Patent Document 5,941,068
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5941068

Method to improve the control of source chemicals delivery by a carrier gas
patent, July 2005

Berman, Michael; Gould, Scott Whitney
US Patent Document 6,917,430
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6917430

Method and apparatus for utilization of partially gasified coal for mercury removal
patent, July 2007

Lissianski, Vitali Victor; Maly, Peter Martin; Seeker, William Randall
US Patent Document 7,249,564
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7249564

Optical methods and systems for detecting a constituent in a gas containing oxygen in harsh environments
patent, January 2011

Carpenter, Michael A.; Sirinakis, George
US Patent Document 7,864,322
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7864322

High temperature gas desulfurization sorbents
patent, November 2012

Alptekin, Gokhan; Dubovik, Margarita; Jayaraman, Ambalavanan
US Patent Document 8,308,848
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/8308848

Nanocomposite thin films for high temperature optical gas sensing of hydrogen
patent, April 2013

Ohodnicki, Paul R.; Brown, Thomas D.
US Patent Document 8,411,275
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/8411275

Hydrogen sulphide detection method and apparatus
patent-application, July 2003

Jiang, Li; Jones, Timothy Gareth John; Mullins, Oliver Clinton
US Patent Application 10/203238; 20030134426
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20030134426

Method and system for detecting chemical substance
patent-application, June 2004

Maruo, Kazuyuki
US Patent Application 10/250559; 20040108472
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20040108472

Concentration cell type hydrogen sensor and method for preparing solid electrolyte capable od conducting proton
patent-application, June 2004

Fukatsu, Norihiko; Kurita, Noriaki; Ohashi, Teruo
US Patent Application 10/472761; 20040112743
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20040112743

Transition metal-doped oxide semiconductor exhibiting room-temperature ferromagnetism
patent-application, March 2006

Punnoose, Alex
US Patent Application 11/195573; 20060060815
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20060060815

Optical switches and routers and optical filters
patent-application, August 2006

Bradley, Kenneth; Lopes, Ward
US Patent Application 11/403941; 20060193557
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20060193557

Hand-held gas detector and method of gas detection
patent-application, October 2007

Chase, D. Bruce; Laubacher, Daniel B.; McCambridge, James D.
US Patent Application 11/601952; 20070243107
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20070243107

Optical methods and systems for detecting a constituent in a gas containing oxygen in harsh environments
patent-application, August 2009

Carpenter, Michael A.; Sirinakis, George
US Patent Application 12/293501; 20090207413
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20090207413

Gas sensor
patent-application, September 2009

McDonald, Robert C.; Harrison, Katherine E.; Chin, Min
US Patent Application 12/317935; 20090218235
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20090218235

Device and Methods of Detection of Airborne Agents
patent-application, August 2010

Meinhart, Carl D.; Piorek, Brian; Lee, Seung Joon
US Patent Application 12/597742; 20100210029
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20100210029

Alkyne-Assisted Nanostructure Growth
patent-application, February 2011

Plata, Desiree L.; Geschwend, Philip M.; Hart, Anastasios John
US Patent Application 12/817818; 20110038784
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20110038784

Gold Carbon Monoxide Oxidation Catalysts with Etched Substrate
patent-application, June 2011

Fansler, Duane D.; Wood, Thomas E.
US Patent Application 12/997396; 20110152070
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20110152070

Recent advances in optochemical sensors for the detection of H₂, O₂, O₃, CO, CO₂ and H₂O in air
journal, November 2006

Ando, Masanori
TrAC Trends in Analytical Chemistry, Vol. 25, Issue 10, p. 937-948
https://doi.org/10.1016/j.trac.2006.06.009

Metal oxides for solid-state gas sensors: What determines our choice?
journal, April 2007

Korotcenkov, G.
Materials Science and Engineering: B, Vol. 139, Issue 1, p. 1-23
https://doi.org/10.1016/j.mseb.2007.01.044

Optical gas sensitivity of a metaloxide multilayer system with gold-nano-clusters
journal, October 2007

Schleunitz, A.; Steffes, H.; Chabicovsky, R.
Sensors and Actuators B: Chemical, Vol. 127, Issue 1
https://doi.org/10.1016/j.snb.2007.07.017

CO optical sensing properties of nanocrystalline ZnO–Au films: Effect of doping with transition metal ions
journal, January 2012

Della Gaspera, E.; Guglielmi, M.; Perotto, G.
Sensors and Actuators B: Chemical, Vol. 161, Issue 1
https://doi.org/10.1016/j.snb.2011.11.011

Enhanced optical and electrical gas sensing response of sol–gel based NiO–Au and ZnO–Au nanostructured thin films
journal, March 2012

Della Gaspera, Enrico; Guglielmi, Massimo; Martucci, Alessandro
Sensors and Actuators B: Chemical, Vol. 164, Issue 1, p. 54-63
https://doi.org/10.1016/j.snb.2012.01.062

Combined effects of small gold particles on the optical gas sensing by transition metal oxide films
journal, April 1997

Ando, Masanori; Kobayashi, Tetsuhiko; Haruta, Masatake
Catalysis Today, Vol. 36, Issue 1, p. 135-141
https://doi.org/10.1016/S0920-5861(96)00206-4

Investigation on nanocrystalline copper-doped zirconia thin films for optical sensing of carbon monoxide at high temperature
journal, December 2011

Remmel, Kurtis; Jiang, Hongmin; Tang, Xiling
Sensors and Actuators B: Chemical, Vol. 160, Issue 1, p. 533-541
https://doi.org/10.1016/j.snb.2011.08.022

Plasmonic transparent conducting metal oxide nanoparticles and nanoparticle films for optical sensing applications
journal, July 2013

Ohodnicki, Paul R.; Wang, Congjun; Andio, Mark
Thin Solid Films, Vol. 539, p. 327-336
https://doi.org/10.1016/j.tsf.2013.04.145

Solvothermal synthesis and properties control of doped ZnO nanoparticles
journal, January 2009

Cimitan, Samanta; Albonetti, Stefania; Forni, Laura
Journal of Colloid and Interface Science, Vol. 329, Issue 1, p. 73-80
https://doi.org/10.1016/j.jcis.2008.09.060

Similar Records in DOE Patents and OSTI.GOV collections:

Conducting metal oxide and metal nitride nanoparticles

Patent DiSalvo, Jr., Francis J.; Subban, Chinmayee V.

Conducting metal oxide and nitride nanoparticles that can be used in fuel cell applications. The metal oxide nanoparticles are comprised of for example, titanium, niobium, tantalum, tungsten and combinations thereof. The metal nitride nanoparticles are comprised of, for example, titanium, niobium, tantalum, tungsten, zirconium, and combinations thereof. The nanoparticles can be sintered to provide conducting porous agglomerates of the nanoparticles which can be used as a catalyst support in fuel cell applications. Further, platinum nanoparticles, for example, can be deposited on the agglomerates to provide a material that can be used as both an anode and a cathode catalyst supportmore » in a fuel cell. « less
Full Text Available
Carbon material supported hollow metal oxide nanoparticles, methods and applications

Patent Yu, Yingchao; Abruna, Hector D.; Wang, Deli; ...

A method for preparing a material composition comprising a hollow transition metal oxide nanoparticle supported upon a carbon material support includes a solution impregnation process step, followed by a thermal reduction process step and finally a thermal oxidation process step. The material composition, an electrode and an electrical component such as but not limited to a battery are all predicated at least in-part upon the material composition prepared in accord with the foregoing method. The foregoing material composition, electrode, battery and method may ultimately provide a LIB with enhanced performance.
Full Text Available
Carbon material supported hollow metal oxide nanoparticles, methods and applications

Patent Yu, Yingchao; Abruna, Hector D.; Wang, Deli; ...

A method for preparing a material composition comprising a hollow transition metal oxide nanoparticle supported upon a carbon material support includes a solution impregnation process step, followed by a thermal reduction process step and finally a thermal oxidation process step. The material composition, an electrode and an electrical component such as but not limited to a battery are all predicated at least in-part upon the material composition prepared in accord with the foregoing method. The foregoing material composition, electrode, battery and method may ultimately provide a LIB with enhanced performance.
Full Text Available
Misfit p-type transparent conductive oxide (TCO) films, methods and applications

Patent Aksit, Mahmut; Robinson, Richard D.

A p-type transparent conductive oxide (TCO) mixed metal oxide material layer formed upon a substrate has a formula M1xM2yOz generally, CaxCoyOz more specifically, and Ca3Co4O9 most specifically. Embodiments provide that the p-type TCO mixed metal oxide material may be formed absent an epitaxial crystalline relationship with respect to the substrate while using a sol-gel synthesis method that uses a chelating polymer material and not a block copolymer material.
Full Text Available
Conductive transition metal oxide nanostructured electrochromic material and optical switching devices constructed thereof

Patent Mattox, Tracy M.; Koo, Bonil; Garcia, Guillermo; ...

An electrochromic device includes a nanostructured transition metal oxide bronze layer that includes one or more transition metal oxide and one or more dopant, a solid state electrolyte, and a counter electrode. The nanostructured transition metal oxide bronze selectively modulates transmittance of near-infrared (NIR) spectrum and visible spectrum radiation as a function of an applied voltage to the device.
Full Text Available

Similar Records

Title: Electronically conducting metal oxide nanoparticles and films for optical sensing applications

Abstract

Citation Formats

Method for measuring the level of hydrogen sulfide in geothermal steam patent, October 1982

In-situ gas analyzer patent, December 1986

Series cell light extinction monitor patent, October 1990

SO.sub.2 sensor patent, August 1994

Process and device for determining the para content of a hydrogen gas stream patent, December 1996

Automotive hydrocarbon adsorber system patent, August 1999

Method to improve the control of source chemicals delivery by a carrier gas patent, July 2005

Method and apparatus for utilization of partially gasified coal for mercury removal patent, July 2007

Optical methods and systems for detecting a constituent in a gas containing oxygen in harsh environments patent, January 2011

High temperature gas desulfurization sorbents patent, November 2012

Nanocomposite thin films for high temperature optical gas sensing of hydrogen patent, April 2013

Hydrogen sulphide detection method and apparatus patent-application, July 2003

Method and system for detecting chemical substance patent-application, June 2004

Concentration cell type hydrogen sensor and method for preparing solid electrolyte capable od conducting proton patent-application, June 2004

Transition metal-doped oxide semiconductor exhibiting room-temperature ferromagnetism patent-application, March 2006

Optical switches and routers and optical filters patent-application, August 2006

Hand-held gas detector and method of gas detection patent-application, October 2007

Optical methods and systems for detecting a constituent in a gas containing oxygen in harsh environments patent-application, August 2009

Gas sensor patent-application, September 2009

Device and Methods of Detection of Airborne Agents patent-application, August 2010

Alkyne-Assisted Nanostructure Growth patent-application, February 2011

Gold Carbon Monoxide Oxidation Catalysts with Etched Substrate patent-application, June 2011

Recent advances in optochemical sensors for the detection of H2, O2, O3, CO, CO2 and H2O in air journal, November 2006

Metal oxides for solid-state gas sensors: What determines our choice? journal, April 2007

Optical gas sensitivity of a metaloxide multilayer system with gold-nano-clusters journal, October 2007

CO optical sensing properties of nanocrystalline ZnO–Au films: Effect of doping with transition metal ions journal, January 2012

Enhanced optical and electrical gas sensing response of sol–gel based NiO–Au and ZnO–Au nanostructured thin films journal, March 2012

Combined effects of small gold particles on the optical gas sensing by transition metal oxide films journal, April 1997

Investigation on nanocrystalline copper-doped zirconia thin films for optical sensing of carbon monoxide at high temperature journal, December 2011

Plasmonic transparent conducting metal oxide nanoparticles and nanoparticle films for optical sensing applications journal, July 2013

Solvothermal synthesis and properties control of doped ZnO nanoparticles journal, January 2009

Method for measuring the level of hydrogen sulfide in geothermal steam
patent, October 1982

In-situ gas analyzer
patent, December 1986

Series cell light extinction monitor
patent, October 1990

SO.sub.2 sensor
patent, August 1994

Process and device for determining the para content of a hydrogen gas stream
patent, December 1996

Automotive hydrocarbon adsorber system
patent, August 1999

Method to improve the control of source chemicals delivery by a carrier gas
patent, July 2005

Method and apparatus for utilization of partially gasified coal for mercury removal
patent, July 2007

Optical methods and systems for detecting a constituent in a gas containing oxygen in harsh environments
patent, January 2011

High temperature gas desulfurization sorbents
patent, November 2012

Nanocomposite thin films for high temperature optical gas sensing of hydrogen
patent, April 2013

Hydrogen sulphide detection method and apparatus
patent-application, July 2003

Method and system for detecting chemical substance
patent-application, June 2004

Concentration cell type hydrogen sensor and method for preparing solid electrolyte capable od conducting proton
patent-application, June 2004

Transition metal-doped oxide semiconductor exhibiting room-temperature ferromagnetism
patent-application, March 2006

Optical switches and routers and optical filters
patent-application, August 2006

Hand-held gas detector and method of gas detection
patent-application, October 2007

Optical methods and systems for detecting a constituent in a gas containing oxygen in harsh environments
patent-application, August 2009

Gas sensor
patent-application, September 2009

Device and Methods of Detection of Airborne Agents
patent-application, August 2010

Alkyne-Assisted Nanostructure Growth
patent-application, February 2011

Gold Carbon Monoxide Oxidation Catalysts with Etched Substrate
patent-application, June 2011

Recent advances in optochemical sensors for the detection of H₂, O₂, O₃, CO, CO₂ and H₂O in air
journal, November 2006

Metal oxides for solid-state gas sensors: What determines our choice?
journal, April 2007

Optical gas sensitivity of a metaloxide multilayer system with gold-nano-clusters
journal, October 2007

CO optical sensing properties of nanocrystalline ZnO–Au films: Effect of doping with transition metal ions
journal, January 2012

Enhanced optical and electrical gas sensing response of sol–gel based NiO–Au and ZnO–Au nanostructured thin films
journal, March 2012

Combined effects of small gold particles on the optical gas sensing by transition metal oxide films
journal, April 1997

Investigation on nanocrystalline copper-doped zirconia thin films for optical sensing of carbon monoxide at high temperature
journal, December 2011

Plasmonic transparent conducting metal oxide nanoparticles and nanoparticle films for optical sensing applications
journal, July 2013

Solvothermal synthesis and properties control of doped ZnO nanoparticles
journal, January 2009