Open AccessOptical coherent thermal emission by excitation of magnetic polariton in multilayer nanoshell trimer
Author(s) -
Zi-Xun Jia,
Yong Shuai,
Shengduo Xu,
HePing Tan
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.0a1096
Subject(s) - nanoshell , polariton , materials science , dielectric , plasmon , trimer , metamaterial , nanophotonics , condensed matter physics , excitation , optoelectronics , optics , physics , nuclear magnetic resonance , dimer , quantum mechanics
A theoretical demonstration is given of coherent thermal emission via the visible region by exciting magnetic polaritons in isolated metal-dielectric-metal multilayer nanoshells and the collective behavior in a trimer comprising multilayer nanoshells. The dipolar metallic core induces magnetic polaritons in the dielectric shell creating a large enhancement of the emissivity, whose mechanism is different from that of film-coupled metamaterials. The coupling effect of the magnetic polaritons and the electric/magnetic modes of symmetric nanoparticle trimers is discussed to understand the collective behavior in self-assembled nanoparticle clusters with potential solar energy utilizations. The concept of hybridization is employed to understand the collective magnetic polaritons of a multilayer nanoshell trimer. The fundamental understanding gained herein opens up new ways to explore, control, and tailor spectral absorptance, thus facilitating rational design of novel self-assembled nanoclusters for energy harvesting.