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Hydrogen detection using surface plasmon resonance in palladium films

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3 Author(s)
Gustavo Oliveira Cavalcanti ; Dep. de Eletrônica e Sistemas, Universidade Federal de Pernambuco (UFPE), Recife, Brasil ; Eduardo Fontana ; Sérgio Campello Oliveira

We investigate the performance of Pd films for the development of H2 sensors based on the surface plasmon resonance (SPR) effect. Experimental measurements were carried out on glass substrates sputtered with Pd thin films, using a homemade automatic reflectometer based on Kretschmann's prism coupling configuration. The sensitivity for H2 detection measured experimentally was approximately 60% lower than that expected from calculations based on the optical constants tabulated in the literature, but exhibited the approximate trend in thickness dependency predicted theoretically. In spite of this difference, these results yield important findings for the design of SPR-based H2 sensors with maximum sensitivity.

Published in:

Microwave and Optoelectronics Conference (IMOC), 2009 SBMO/IEEE MTT-S International

Date of Conference:

3-6 Nov. 2009