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Proceedings Paper

Characterization of hydrogen sensors based on palladium-electroplated fiber Bragg gratings (FBG)
Author(s): Tony Peng; Yiwu Tang; James S. Sirkis
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Paper Abstract

The response of a new type of hydrogen sensors based on electroplated palladium on Fiber Bragg Gratings (FBG) is demonstrated. Sensor response is characterized from 35 degrees to 95 degrees Celsius at 0.6% hydrogen in nitrogen and from 0.1% to 4% hydrogen at 95 degrees Celsius with air purging between each hydrogen cycle. The Bragg wavelength shift at saturation and the response times were used to analyze the data. The results showed that heat treatments in flowing air at 95 degrees Celsius to 150 degrees Celsius greatly improved the sensor response. A comparison of the experimental response times to those predicted by diffusion equations implied that temperature had a profound effect on hydrogen surface reaction probability.

Paper Details

Date Published: 31 May 1999
PDF: 12 pages
Proc. SPIE 3670, Smart Structures and Materials 1999: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials, (31 May 1999); doi: 10.1117/12.349771
Show Author Affiliations
Tony Peng, Univ. of Maryland/College Park (United States)
Yiwu Tang, Univ. of Maryland/College Park (United States)
James S. Sirkis, Univ. of Maryland/College Park (United States)


Published in SPIE Proceedings Vol. 3670:
Smart Structures and Materials 1999: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials
Richard O. Claus; William B. Spillman, Editor(s)

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