Plasmonic Systems Unveiled by Fano Resonances

作者：Yan Francescato, Vincenzo Giannini, Stefan A. Maier · 发表于：ACS Nano · 年份：2012 · DOI：10.1021/nn2050533 · 被引用次数：194 · 研究领域：Plasmonic and Surface Plasmon Research、Gold and Silver Nanoparticles Synthesis and Applications、Photonic Crystals and Applications

We show in detail how a derivation of Fano theory can serve as a new paradigm to study, understand, and control the interaction of nano-objects with light. Examples include a plasmonic crystal, a dolmen-type structure sustaining dark and bright plasmon modes, and a nanoshell heptamer. On the basis of only three coupling factors, a straightforward analytical formula is obtained, only assuming a plasmonic resonance for the continuum, and retaining the nonclassical character of the original formalism. It allows one to predict, reproduce, or decompose Fano interferences solely in terms of the physical properties of the uncoupled nanostructures when available, without the need of additional fitting parameters.