Superdirective all-dielectric nanoantennas: Theory and experiment
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Belov, P. A.
Krasnok, A. E.
Filonov, D. S.
Simovski, C. R.
Kivshar, Yu S.
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Abstract
We introduce a novel concept of superdirective nanoantennas based on the generation of higherorder optically-induced magnetic multipoles. Such an all-dielectric nanoantenna can be realized as an optically small spherical dielectric nanoparticle with a notch excited by a point source located in the notch. We also confirm the predicted superdirectivity effect experimentally through scaling to the microwave frequency range.
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IOP Conference Series: Materials Science and Engineering
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