Multiscale theoretical modeling of plasmonic sensing of hydrogen uptake in palladium nanodisks

M. Ameen Poyli, Vyacheslav Mikhaylovich Silkin, I. P. Chernov, P. M. Echenique, R. Díez Muiño, J. Aizpurua

Research output: Contribution to journalArticle

31 Citations (Scopus)

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 languageEnglish
Pages (from-to)2556-2561
Number of pages6
JournalJournal of Physical Chemistry Letters
Volume3
Issue number18
DOIs
Publication statusPublished - 20 Sep 2012

Fingerprint

Palladium
Hydrides
Light scattering
Dielectric properties
palladium
Hydrogen
Optical properties
Metals
metal hydrides
shift
hydrogen
admixtures
dielectric properties
inhomogeneity
light scattering
saturation
optical properties
energy

Keywords

  • Hard Matter
  • Optical Materials
  • Plasmonics

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Multiscale theoretical modeling of plasmonic sensing of hydrogen uptake in palladium nanodisks. / Poyli, M. Ameen; Silkin, Vyacheslav Mikhaylovich; Chernov, I. P.; Echenique, P. M.; Muiño, R. Díez; Aizpurua, J.

In: Journal of Physical Chemistry Letters, Vol. 3, No. 18, 20.09.2012, p. 2556-2561.

Research output: Contribution to journalArticle

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