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Proceedings Paper

Ultra-high temperature fiber optical chemical sensors based on nano-porous metal oxides
Author(s): Aidong Yan; Mohamed Zaghloul; Zsolt L Poole; Paul Ohodnicki; Michael Buric; Kevin P. Chen
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Paper Abstract

This paper presents fiber optical gas sensors based on nano-porous metal oxide functional materials for high-temperature energy applications. A solution-based approach was used to produce nano-porous functional metal oxide and their dopant variants as sensing films, which was integrated on high-temperature stable FBGs in D-shaped silica fibers and sapphire fibers. The Bragg grating peaks were used to monitor the refractive index change and optical absorption loss due to the redox reaction between Pd-doped TiO2 and hydrogen from the room temperature to 800°C. The experimental results show the sensor's response is reversible for hydrogen concentration between 0.1 vol.% to 5 vol. %. The response time of the hydrogen sensor is <8s.

Paper Details

Date Published: 22 May 2015
PDF: 8 pages
Proc. SPIE 9467, Micro- and Nanotechnology Sensors, Systems, and Applications VII, 94671I (22 May 2015); doi: 10.1117/12.2178147
Show Author Affiliations
Aidong Yan, Univ. of Pittsburgh (United States)
Mohamed Zaghloul, Univ. of Pittsburgh (United States)
Zsolt L Poole, Univ. of Pittsburgh (United States)
Paul Ohodnicki, National Energy Technology Lab. (United States)
Michael Buric, National Energy Technology Lab. (United States)
Kevin P. Chen, Univ. of Pittsburgh (United States)

Published in SPIE Proceedings Vol. 9467:
Micro- and Nanotechnology Sensors, Systems, and Applications VII
Thomas George; Achyut K. Dutta; M. Saif Islam, Editor(s)

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