All-dielectric resonant metasurfaces with a strong toroidal response

All-dielectric resonant metasurfaces with a strong toroidal response

We demonstrate how to create all-dielectric metasurfaces with a strong toroidal response by arranging two types of nanodisks into asymmetric quadrumer clusters. We demonstrate that a strong axial toroidal response of the metasurface is related to conditions of the trapped (dark) mode that is excited...

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Veröffentlicht in:arXiv.org 2018-01
Hauptverfasser: Tuz, Vladimir R, Khardikov, Vyacheslav V, Kivshar, Yuri S
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Asymmetry
Broken symmetry
Correlation analysis
Dielectric strength
Metasurfaces
Notches
Physics - Optics
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Kivshar, Yuri S
description We demonstrate how to create all-dielectric metasurfaces with a strong toroidal response by arranging two types of nanodisks into asymmetric quadrumer clusters. We demonstrate that a strong axial toroidal response of the metasurface is related to conditions of the trapped (dark) mode that is excited due the symmetry breaking in the cluster. We study the correlation between the toroidal response and asymmetry in the metasurface and nanocluster geometries, which appears from the different diameters of nanodisks or notches introduced into the nanodisks.
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subjects Asymmetry
Broken symmetry
Correlation analysis
Dielectric strength
Metasurfaces
Notches
Physics - Optics
title All-dielectric resonant metasurfaces with a strong toroidal response
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