Designing and deconstructing the Fano lineshape in plasmonic nanoclusters.
Nano Lett
; 12(2): 1058-62, 2012 Feb 08.
Article
en En
| MEDLINE
| ID: mdl-22208801
ABSTRACT
By varying the relative dimensions of the central and peripheral disks of a plasmonic nanocluster, the depth of its Fano resonance can be systematically modified; spectral windows where the scattering cross section of the nanocluster is negligible can be obtained. In contrast, electron-beam excitation of the plasmon modes at specific locations within the nanocluster yields cathodoluminescence spectra with no Fano resonance. By examining the selection rules for plasmon excitation in the context of a coupled oscillator picture, we provide an intuitive explanation of this behavior based on the plasmon modes observed for optical and electron-beam excitation in this family of nanostructures.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Resonancia por Plasmón de Superficie
/
Nanoestructuras
Idioma:
En
Año:
2012
Tipo del documento:
Article