Loss-Mitigated Collective Resonances in Gain-Assisted Plasmonic Mesocapsules

Melissa Infusino, Antonio De Luca, Alessandro Veltri, Carmen Vázquez-Vázquez, Miguel A. Correa-Duarte, Rakesh Dhama, Giuseppe Strangi

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

29 Citas (Scopus)


(Graph Presented). Inherent optical losses of plasmonic materials represent a crucial issue for optoplasmonics, whereas the realization of hierarchical plasmonic nanostructures implemented with gain functionalities is a promising and valuable solution to the problem. Here we demonstrate that porous silica capsules embedding gold nanoparticles (Au NPs) and fabricated at a scale intermediate between the single plasmonic nanostructure and bulk materials show remarkable form-function relations. At this scale, in fact, the plasmon-gain interplay is dominated by the location of the gain medium with respect to the spatial distribution of the local field. In particular, the hollow spherical cavities of these structures allow regions of uniform plasmonic field where the energy transfer occurring between chromophoric donors and the surrounding plasmonic acceptors gives rise to a broadband attenuation of losses.

Idioma originalInglés
Páginas (desde-hasta)371-376
Número de páginas6
PublicaciónACS Photonics
EstadoPublicada - 16 abr. 2014
Publicado de forma externa


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