Title :
Au-(Y2O3)X(ZrO2)1-X Thin Films as an All-Optical Method for Measuring Emissions at High Temperatures
Author :
Rogers, Phillip H. ; Sirinakis, George ; Carpenter, Michael A.
Author_Institution :
Univ. at Albany, Albany
Abstract :
Gold nanoparticle embedded yttria stabilized zirconia (Au-YSZ) thin films have been deposited on optically transparent sapphire substrates. Absorbance due to the Au nanoparticle surface plasmon resonance (SPR) band was monitored as concentrations of various gases, such as O2, H2, NO2, and CO in N2, were varied and flowed over Au-YSZ films at elevated temperatures (~500degC). Detectable changes in the SPR band were observed for all gases, with the detection limit for NO2 being 5 ppm. In addition, Au-YSZ films have repeatedly shown stable sensing over 48 hour periods at 500degC during O2 and H2 titration experiments. This all-optical approach for the detection of gases at high temperatures is preferred over electrical measurements due to the simplicity of the device design and the absence of conductive contacts.
Keywords :
gold; nanoparticles; spectral methods of temperature measurement; surface plasmon resonance; thin film sensors; vapour deposited coatings; yttrium compounds; zirconium compounds; Au-(Y2O3)x(ZrO2)1-x; all-optical temperature measurement method; high temperature measurement; surface plasmon resonance; yttria stabilized zirconia thin films; Conductivity measurement; Gases; Gold; Monitoring; Optical films; Optical sensors; Plasmons; Resonance; Sputtering; Temperature sensors;
Conference_Titel :
Sensors, 2007 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-1261-7
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2007.4388486