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Résumé
An efficient procedure is introduced for the calculation of the optical response of individual and coupled metallic nanoparticles in the framework of the discrete-dipole approximation (DDA). We introduce a modal expansion in the basis set of discrete dipoles and show that a few suitably selected modes are sufficient to compute optical spectra with reasonable accuracy, thus reducing the required numerical effort relative to other DDA approaches. Our method offers a natural framework for the study of localized plasmon modes, including plasmon hybridization. As a proof of concept, we investigate optical extinction and electron energy-loss spectra of monomers, dimers, and quadrumers formed by flat silver squares. This method should find application to the previously prohibited simulation of complex particle arrays.
langue originale | Anglais |
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Numéro d'article | 245439 |
Nombre de pages | 10 |
journal | Physical Review. B, Condensed Matter and Materials Physics |
Volume | 88 |
Numéro de publication | 24 |
Les DOIs | |
Etat de la publication | Publié - 26 déc. 2013 |
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Plateforme Technologique Calcul Intensif
Benoît Champagne (!!Manager)
Plateforme technologique Calcul intensifEquipement/installations: Plateforme technolgique
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"March" meeting -- homage to Prof. Norman H. March
Luc Henrard (Conférencier)
23 nov. 2013Activité: Participation ou organisation d'un événement › Participation à un atelier/workshop, un séminaire, un cours