Tunable two types of Fano resonances in metal–dielectric core–shell nanoparticle clusters
2013; American Institute of Physics; Volume: 103; Issue: 11 Linguagem: Inglês
10.1063/1.4821187
ISSN1520-8842
AutoresZhong‐Jian Yang, Qu‐Quan Wang, Hai‐Qing Lin,
Tópico(s)Gold and Silver Nanoparticles Synthesis and Applications
ResumoWe demonstrate that two types of Fano resonances could be observed in metal–dielectric core–shell nanoparticle heptamer clusters. The first kind of Fano resonance is caused by the coupling between electric dipolar plasmon modes. It still remains with high refractive index shells even though metal cores are separated by them. The second one is caused by the interference between scattering electromagnetic modes of dielectric shell and modified plasmon modes. The energy and line shape of these Fano resonances are highly tunable with shell index and particle geometry, which could find applications in nanophotonics.
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