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 Detalle_Publicacion

Toroidal metasurface resonances in microwave waveguides

Abstract: We theoretically investigate the possibility to load microwave waveguides with dielectric particle arrays that emulate the properties of infinite, two-dimensional, all-dielectric metasurfaces. First, we study the scattering properties and the electric and magnetic multipole modes of dielectric cuboids and identify the conditions for the excitation of the so-called anapole state. Based on the obtained results, we design metasurfaces composed of a square lattice of dielectric cuboids, which exhibit strong toroidal resonances. Then, three standard microwave waveguide types, namely parallel-plate waveguides, rectangular waveguides, and microstrip lines, loaded with dielectric cuboids are designed, in such a way that they exhibit the same resonant features as the equivalent dielectric metasurface. The analysis shows that parallel-plate and rectangular waveguides can almost perfectly reproduce the metasurface properties at the resonant frequency. The main attributes of such resonances are also observed in the case of a standard impedance-matched microstrip line, which is loaded with only a small number of dielectric particles. The results demonstrate the potential for a novel paradigm in the design of "metasurface-loaded" microwave waveguides, either as functional elements in microwave circuitry, or as a platform for the experimental study of the properties of dielectric metasurfaces.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Scientific reports, 2019, 9, 7544 - (CORRIGENDUM), 2020, 10, 22397

Editorial: Nature Publishing Group

 Fecha de publicación: 17/05/2019

Nº de páginas: 11

Tipo de publicación: Artículo de Revista

 DOI: 10.1038/s41598-019-44093-7

ISSN: 2045-2322

 Proyecto español: TEC2016-77242-C3-1-R

Url de la publicación: https://doi.org/10.1038/s41598-019-44093-7

Autoría

ZOGRAFOPOULOS, DIMITRIOS C.

FERRARO, ANTONIO

BRAULIO GARCIA CAMARA

JOSE MANUEL SANCHEZ PENA

BECCHERELLI, ROMEO