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
14 September 2007
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, .
(doi:10.1088/1367-2630/9/9/324).
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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Published date: 14 September 2007
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Local EPrints ID: 50203
URI: http://eprints.soton.ac.uk/id/eprint/50203
PURE UUID: 4871685f-812d-4e8f-9aca-55c09fadd1fd
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Date deposited: 31 Jan 2008
Last modified: 16 Mar 2024 02:43
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Author:
K. Marinov
Author:
A.D. Boardman
Author:
V.A. Fedotov
Author:
N. Zheludev
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