Direct Comparison of PdAu Alloy Thin Films and Nanoparticles upon Hydrogen Exposure.

ABSTRACT: Nanostructured metal hydrides are able to efficiently detect hydrogen in optical sensors. In the literature, two nanostructured systems based on metal hydrides have been proposed for this purpose each with its own detection principle: continuous sub-100 nm thin films read out via optical reflectance/transmittance changes and nanoparticle arrays for which the detection relies on localized surface plasmon resonance. Despite their apparent similarities, their optical and structural response to hydrogen has never been directly compared. In response, for the case of Pd_{1- y}Au _y ( y = 0.15-0.30) alloys, we directly compare these two systems and establish that they are distinctively different. We show that the dissimilar optical response is not caused by the different optical

SUBMITTER: Bannenberg LJ 

PROVIDER: S-EPMC6498406 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature