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Toroidal metamaterial

Toroidal metamaterial
Toroidal metamaterial
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.
324-[12pp]
Marinov, K.
9cd1e0a3-6dd8-4acf-b33b-3a47d070fcb3
Boardman, A.D.
ad63ed1d-aef9-401a-bae3-5d08b5ac1680
Fedotov, V.A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Zheludev, N.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Marinov, K.
9cd1e0a3-6dd8-4acf-b33b-3a47d070fcb3
Boardman, A.D.
ad63ed1d-aef9-401a-bae3-5d08b5ac1680
Fedotov, V.A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Zheludev, N.
32fb6af7-97e4-4d11-bca6-805745e40cc6

Marinov, K., Boardman, A.D., Fedotov, V.A. and Zheludev, N. (2007) Toroidal metamaterial. New Journal of Physics, 9, 324-[12pp]. (doi:10.1088/1367-2630/9/9/324).

Record type: Article

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.

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More information

Published date: 14 September 2007

Identifiers

Local EPrints ID: 50203
URI: https://eprints.soton.ac.uk/id/eprint/50203
PURE UUID: 4871685f-812d-4e8f-9aca-55c09fadd1fd
ORCID for N. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 31 Jan 2008
Last modified: 10 Dec 2019 01:56

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