Journal
ACS PHOTONICS
Volume 2, Issue 6, Pages 724-729Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.5b00082
Keywords
Fano resonance; nanoparticle oligomer; silicon; optical magnetism; symmetry; nanophotonics; quadrumer
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Funding
- Australian Research Council
- U.S. Air Force Office of Scientific Research [FA9550-13-1-0204, P02]
- Government of the Russian Federation [074-U01]
- Ministry of Education and Science of the Russian Federation
- Russian Foundation for Basic Research
- Dynasty Foundation (Russia)
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We study the interplay between collective and individual optically induced magnetic responses in quadrumers made of identical dielectric nanoparticles. Unlike their plasmonic counterparts, all-dielectric nanoparticle clusters are shown to exhibit multiple dimensions of resonant magnetic responses that can be employed for the realization of anomalous scattering signatures. We focus our analysis on symmetric quadrumers made from silicon nanoparticles and verify our theoretical results in proof-of-concept radio frequency experiments demonstrating the existence of a novel type of magnetic Fano resonance in nanophotonics.
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