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All-dielectric silicon metasurface with strong subterahertz toroidal dipole resonance

Abstract: A single-layer, all-dielectric metasurface exhibiting a strong toroidal resonance in the low-atmospheric loss radio window of the subterahertz W-band is theoretically proposed and experimentally demonstrated. The metasurface is fabricated on a high-resistivity floating-zone silicon wafer by means of a single-process, wet anisotropic etching technique. The properties of the toroidal mode of both the constituent dielectric elements and the metasurface are rigorously investigated by means of the multipole decomposition technique and full-wave simulations. The experimental demonstration of such a compact, all-silicon metasurface opens new venues of research in the investigation of toroidal modes and the engineering of functional millimeter-wave components, which can be scaled to terahertz and higher frequencies of the electromagnetic spectrum.

 Fuente: Advanced Optical Materials, 2019, 7(19), 1900777

 Editorial: John Wiley and Sons Inc.

 Fecha de publicación: 04/10/2019

 Nº de páginas: 9

 Tipo de publicación: Artículo de Revista

 DOI: 10.1002/adom.201900777

 ISSN: 2195-1071

 Proyecto español: TEC2013-47342-C2-2-R

 Url de la publicación: https://doi.org/10.1002/adom.201900777

Autoría

ZOGRAFOPOULOS, DIMITRIOS C.

FERRARO, ANTONIO

MARTÍN MATEOS, PEDRO

BRAULIO GARCIA CAMARA

MORENO OYERVIDES, ALDO

KROZER, VIKTOR

ACEDO GALLARDO, PABLO

VERGAZ BENITO, RICARDO

JOSE MANUEL SANCHEZ PENA

BECCHERELLI, ROMEO