The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 02, 2013
Filed:
Apr. 10, 2012
Paul R. Ohodnicki, Jr., Alison Park, PA (US);
Thomas D. Brown, Finleyville, PA (US);
Paul R. Ohodnicki, Jr., Alison Park, PA (US);
Thomas D. Brown, Finleyville, PA (US);
U.S. Department of Energy, Washington, DC (US);
Abstract
The disclosure relates to a plasmon resonance-based method for Hsensing in a gas stream at temperatures greater than about 500° C. utilizing a hydrogen sensing material. The hydrogen 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 10S/cm at a temperature of 700° C. Exemplary inert matrix materials include SiO, AlO, and SiNas well as modifications to modify the effective refractive indices through combinations and/or doping of such materials. At high temperatures, blue shift of the plasmon resonance optical absorption peak indicates the presence of H. The method disclosed offers significant advantage over active and reducible matrix materials typically utilized, such as yttria-stabilized zirconia (YSZ) or TiO.