Journal
NANO LETTERS
Volume 11, Issue 10, Pages 4366-4369Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl202489g
Keywords
Plasmonics; LSPR resonances; perfect absorbers; palladium; sensor; hydrogen sensing
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Funding
- BMBF
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We report on the experimental realization of a palladium-based plasmonic perfect absorber at visible wavelengths and its application to hydrogen sensing. Our design exhibits a reflectance <0.5% and zero transmittance at 650 nm and the operation wavelength of the absorber can be tuned by varying its structural parameters. Exposure to hydrogen gas causes a rapid and reversible increase in reflectance on a time scale of seconds. This pronounced response introduces a novel optical hydrogen detection scheme with very high values of the relative intensity response.
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