Toroidal metamaterial

Abstract

It is shown that a new type of metamaterial, a 3D-array of toroidal solenoids, displays a significant toroidal response that can be readily measured. This is in sharp contrast to materials that exist in nature, where the toroidal component is weak and hardly measurable. The existence of an optimal configuration, maximizing the interaction with an external electromagnetic field, is demonstrated. In addition, it is found that a characteristic feature of the magnetic toroidal response is its strong dependence on the background dielectric permittivity of the host material, which suggests possible applications. Negative refraction and backward waves exist in a composite toroidal metamaterial, consisting of an array of wires and an array of toroidal solenoids.

7 pages, 7 figures, REVTeX

References in corpus (2)

• Optical Magnetoelectric Effect in Multiferroic Materials: Evidence for a Lorentz Force Acting on a Ray of Light
• Gigantic Enhancement of Magneto-Chiral Effect in Photonic Crystals

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• Seeing the unseen: observation of an anapole with dielectric nanoparticles
• Recent Progress in the thermodynamics of ferrotoroidic materials
• Open-circuit ultrafast generation of nanoscopic toroidal moments: The swift phase generator