Extremely high Q-factor toroidal metamaterials
Alexey A. Basharin, Vitaliy Chuguevskiy, Nikita Volsky, Maria, Kafesaki, Eleftherios N. Economou, Alexey V. Ustinov
TL;DR
This paper introduces toroidal metamaterials with high Q-factors enabled by their unique topology, allowing for highly confined electromagnetic fields suitable for advanced resonator applications.
Contribution
It demonstrates that the topology of toroidal dipolar modes enables high Q-factor resonances through field confinement and mode interference in planar metamaterials.
Findings
Spatial confinement of fields within subwavelength regions.
High Q-factor resonances achieved via mode interference.
Potential for advanced resonator applications.
Abstract
We demonstrate that, owing to the unique topology of the toroidal dipolar mode, its electric/magnetic field can be spatially confined within subwavelength, externally accessible regions of the metamolecules, which makes the toroidal planar metamaterials a viable platform for high Q-factor resonators due to interfering toroidal and other dipolar modes in metamolecules.
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Taxonomy
TopicsMetamaterials and Metasurfaces Applications · Advanced Antenna and Metasurface Technologies · Acoustic Wave Resonator Technologies