A novel free-standing dielectric metasurface that shows a strong toroidal resonance in the sub- THz range is proposed and demonstrated. Theoretical and experimental studies confirm the basic operation principle and electromagnetic response of the metasurface. This first demonstration of a single-layer silicon metasurface opens new venues of research for the investigation of toroidal multipoles and the engineering of ultra-high Q factor devices in the sub-THz spectral range, where high Q factors are very difficult to obtain. ? 2019 IEEE.
All-dielectric metasurfaces with toroidal multipole resonances at sub-THz
Zografopoulos;Ferraro A;Beccherelli;
2019
Abstract
A novel free-standing dielectric metasurface that shows a strong toroidal resonance in the sub- THz range is proposed and demonstrated. Theoretical and experimental studies confirm the basic operation principle and electromagnetic response of the metasurface. This first demonstration of a single-layer silicon metasurface opens new venues of research for the investigation of toroidal multipoles and the engineering of ultra-high Q factor devices in the sub-THz spectral range, where high Q factors are very difficult to obtain. ? 2019 IEEE.File in questo prodotto:
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