Abstract
We study theoretically the optical properties of palladium nanodisks during hydrogen uptake. A combination of an ab initio quantum mechanical description of the Pd-H dielectric properties and a full electrodynamical study of light scattering in the H-modified Pd nanodisks allows us to trace the shift of the localized surface plasmon as a function of the H concentration in the Pd-H disk. We follow the evolution of the plasmon peak energy for different admixtures of the Pd-H α and β phases and interpret quantitatively the experimental sensitivity of the plasmon energy shift to the structural inhomogeneity upon H absorption. Our multiscale theoretical framework provides a solid background for plasmonic sensing of structural domains, as well as for identifying H saturation conditions in metal hydride systems.
Original language | English |
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Pages (from-to) | 2556-2561 |
Number of pages | 6 |
Journal | Journal of Physical Chemistry Letters |
Volume | 3 |
Issue number | 18 |
DOIs | |
Publication status | Published - 20 Sep 2012 |
Keywords
- Hard Matter
- Optical Materials
- Plasmonics
ASJC Scopus subject areas
- Materials Science(all)