Subradiant Plasmon Modes in Multilayer Metal–Dielectric Nanoshells

• DOI: 10.1021/jp205736d
• Publication Date: 2011-10-11T14:21:23Z
• Authors: Meng Wang; Min Cao; Xin Chen; Ning Gu
• Keywords: Nanoshell; Fano resonance; Localized surface plasmon; Fano plane

Subradiant plasmon modes play an important role in coupling, which can couple to the superradiant resulting Fano resonances. In this study, we investigated behaviors of subradiant plasmons multilayer metal–dielectric nanoshells using generalized Mie theory. We showed that it is possible get a pronounced resonance single concentric nanoshell by controlling size and geometry. The near-field coupling effects chains were studied changing alignment, particle number, interparticle spacing. local electric field induced surface charge distributions plotted gain physical insight into mechanisms. interactions between particles result well-developed due broadening bright modes. remain robust nearly uninfluenced surrounding medium. At frequency, largest enhancement occurs silica layer, quite different from solid metal nanoparticle chains.