Interplay of magnetic responses in all-dielectric oligomers to realize magnetic Fano resonances
arXiv:1607.04592 · doi:10.1021/acsphotonics.5b00082
Abstract
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.
arXiv comment20 pages, 7 figures
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- Magnetic hot-spots generation at optical frequencies in all-dielectric mesoscale Janus particles