Palladium-based plasmonic perfect absorber in the visible wavelength range and its application to hydrogen sensing

Publikationstyp
Journal Article
Date Issued
2011-10-12
Sprache
English
Author(s)
Tittl, Andreas  
Mai, Patrick
Taubert, Richard
Dregely, Daniel
Liu, Na
Giessen, Harald
TORE-URI
https://hdl.handle.net/11420/61995
Journal
Nano letters  
Volume
11
Issue
10
Start Page
4366
End Page
4369
Citation
Nano Letters 11 (10): 4366-4369 (2011)
Publisher DOI
10.1021/nl202489g
Scopus ID
2-s2.0-80054010595
ISSN
15306984
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.
Subjects
hydrogen sensing
LSPR resonances
palladium
perfect absorbers
Plasmonics
sensor
DDC Class
600: Technology