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Updated: May 29, 2026

Preparation of Silver-Palladium Alloyed Nanoparticles for Plasmonic Catalysis under Visible-Light Illumination
Published on: August 18, 2020
Palladium-based plasmonic perfect absorber in the visible wavelength range and its application to hydrogen sensing
Andreas Tittl1, Patrick Mai, Richard Taubert
14th Physics Institute and Research Center SCOPE, University of Stuttgart , D-70569 Stuttgart, Germany.
Abstract:
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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