TITLE

Optical hydrogen detection with periodic subwavelength palladium hole arrays

AUTHOR(S)
Maeda, Etsuo; Mikuriya, Sho; Endo, Koichi; Yamada, Ichiro; Suda, Atsushi; Delaunay, Jean-Jacques
PUB. DATE
September 2009
SOURCE
Applied Physics Letters;9/28/2009, Vol. 95 Issue 13, p133504
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The extraordinary transmission of infrared light through subwavelength rectangular hole arrays of palladium is used to detect hydrogen. The main resonance peak of rectangular hole arrays is found to shift upon exposure to hydrogen. Experimental evidence of the change in the Pd phase, producing a shift toward longer wavelengths of the main resonance peak, is presented and supported by simulations that agree with experimental observation. The all-optical and selective detection scheme of hydrogen produces large peak shifts that enable the detection of hydrogen concentration near the lower flammability threshold in air.
ACCESSION #
44449139

 

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