Toroidal metamaterial

Details Toroidal metamaterial Toroidal metamaterial

2007-09-22

arxiv.org/abs/0709.3607v1

New Journal of Physics 9 (2007) 324

Physics

Classical Physics

7 pages, 7 figures, REVTeX

Scientific paper

10.1088/1367-2630/9/9/324

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.

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