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Toroidal dipolar response in a metamaterial

Toroidal dipolar response in a metamaterial
Toroidal dipolar response in a metamaterial
Toroidal multipoles are fundamental electromagnetic excitations different from those associated with the familiar charge and magnetic multipoles. They have been held responsible for parity violation in nuclear and particle physics, but direct evidence of their existence in classical electrodynamics has remained elusive. We report on the observation of a resonant electromagnetic response in an artificially engineered medium, or metamaterial, that cannot be attributed to magnetic or charge multipoles and can only be explained by the existence of a toroidal dipole. Our direct experimental evidence of the toroidal response brings attention to the often ignored electromagnetic interactions involving toroidal multipoles, which could be present in naturally occurring systems, especially at the macromolecule level, where toroidal symmetry is ubiquitous
0036-8075
1510-1512
Kaelberer, T.
c0524658-a9c5-4220-9027-87805a34bf02
Fedotov, V.A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Papasimakis, N.
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Tsai, D.P.
ac188460-c076-41ee-bce4-7aa873f757e3
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Kaelberer, T.
c0524658-a9c5-4220-9027-87805a34bf02
Fedotov, V.A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Papasimakis, N.
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Tsai, D.P.
ac188460-c076-41ee-bce4-7aa873f757e3
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6

Kaelberer, T., Fedotov, V.A., Papasimakis, N., Tsai, D.P. and Zheludev, N.I. (2010) Toroidal dipolar response in a metamaterial. Science, 330 (6010), 1510-1512. (doi:10.1126/science.1197172).

Record type: Article

Abstract

Toroidal multipoles are fundamental electromagnetic excitations different from those associated with the familiar charge and magnetic multipoles. They have been held responsible for parity violation in nuclear and particle physics, but direct evidence of their existence in classical electrodynamics has remained elusive. We report on the observation of a resonant electromagnetic response in an artificially engineered medium, or metamaterial, that cannot be attributed to magnetic or charge multipoles and can only be explained by the existence of a toroidal dipole. Our direct experimental evidence of the toroidal response brings attention to the often ignored electromagnetic interactions involving toroidal multipoles, which could be present in naturally occurring systems, especially at the macromolecule level, where toroidal symmetry is ubiquitous

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More information

Published date: December 2010
Organisations: Optoelectronics Research Centre, Physics & Astronomy

Identifiers

Local EPrints ID: 176849
URI: https://eprints.soton.ac.uk/id/eprint/176849
ISSN: 0036-8075
PURE UUID: 154e4b93-b4b7-4c44-bb6d-86f36667a922
ORCID for N. Papasimakis: ORCID iD orcid.org/0000-0002-6347-6466
ORCID for N.I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 11 Mar 2011 14:07
Last modified: 20 Jul 2019 01:22

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