Journal
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
Volume 375, Issue 2090, Pages -Publisher
ROYAL SOC
DOI: 10.1098/rsta.2016.0069
Keywords
high-index dielectric nanoparticles; Mie resonances; toroidal mode; anapole
Categories
Funding
- DSI core funds
- A*STAR Science and Engineering Research Council (SERC) Pharos grant [1527000025]
- Australian Research Council
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We reveal that an isotropic, homogeneous, subwavelength particle with high refractive index can produce ultra-small total scattering. This effect, which follows from the inhibition of the electric dipole radiation, can be identified as a Fano resonance in the scattering efficiency and is associated with the excitation of an anapole mode in the particle. This anapole mode is non-radiative and emerges from the destructive interference of electric and toroidal dipoles. The invisibility effect could be useful for the design of highly transparent optical materials. This article is part of the themed issue 'New horizons for nanophotonics'.
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