All‐Dielectric Silicon Metasurface with Strong Subterahertz Toroidal Dipole Resonance
Source abstract
Abstract
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.
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Research context
OpenAlex topics: Metamaterials and Metasurfaces Applications · Advanced Antenna and Metasurface Technologies · Antenna Design and Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Consiglio Nazionale delle Ricerche Istituto per la Microelettronica e Microsistemi Via del fosso del cavaliere 100 00133 Rome Italy
Group of Displays and Photonic Applications (GDAF) Department of Electronic Technology Carlos III University of Madrid Madrid 28911 Spain
Sensors and Instrumentation Techniques (SIT) Department of Electronic Technology Carlos III University of Madrid Madrid 28911 Spain
Physics Institute Goethe University Frankfurt am Main 60438 Frankfurt am Main Germany
Funding
European Commission · Comunidad de Madrid · Ministerio de Economía y Competitividad · Universidad Carlos III de Madrid · Ministerio de Educación, Cultura y Deporte
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