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Metamaterial with negative index due to chirality

Metamaterial with negative index due to chirality
Metamaterial with negative index due to chirality
Recently it has been predicted that materials with exceptionally strong optical activity may also possess a negative refractive index, allowing the realization of superlenses for super-resolution imaging and data storage applications. Here we demonstrate experimentally and numerically that a chirality-induced negative index of refraction is possible. A negative index of refraction due to three-dimensional chirality is demonstrated for a bilayered metamaterial based on pairs of mutually twisted planar metal patterns in parallel planes, which also shows negative electric and magnetic responses and exceptionally strong optical activity and circular dichroism. Multilayered forms of the metamaterial are found to be suitable for use as ultrathin polarization rotators and circular polarizers for practical applications.
chirality, circular dichroism, metamaterials, optical materials, optical multilayers, optical rotation, polarisation, refractive index
1550-235X
Plum, E.
50761a26-2982-40df-9153-7aecc4226eb5
Zhou, J.
2aae48ec-ff02-41fe-96b6-404b00ad5e68
Dong, J.
7bccde16-5c21-4609-a052-cb0726d45ae2
Fedotov, V.A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Koschny, T.
764558cb-a540-422a-958b-277d4e632738
Soukoulis, C.M.
46283f2d-f6a6-4cb5-8deb-c8ca62725c09
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Plum, E.
50761a26-2982-40df-9153-7aecc4226eb5
Zhou, J.
2aae48ec-ff02-41fe-96b6-404b00ad5e68
Dong, J.
7bccde16-5c21-4609-a052-cb0726d45ae2
Fedotov, V.A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Koschny, T.
764558cb-a540-422a-958b-277d4e632738
Soukoulis, C.M.
46283f2d-f6a6-4cb5-8deb-c8ca62725c09
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6

Plum, E., Zhou, J., Dong, J., Fedotov, V.A., Koschny, T., Soukoulis, C.M. and Zheludev, N.I. (2009) Metamaterial with negative index due to chirality. Physical Review B, 79 (3). (doi:10.1103/PhysRevB.79.035407).

Record type: Article

Abstract

Recently it has been predicted that materials with exceptionally strong optical activity may also possess a negative refractive index, allowing the realization of superlenses for super-resolution imaging and data storage applications. Here we demonstrate experimentally and numerically that a chirality-induced negative index of refraction is possible. A negative index of refraction due to three-dimensional chirality is demonstrated for a bilayered metamaterial based on pairs of mutually twisted planar metal patterns in parallel planes, which also shows negative electric and magnetic responses and exceptionally strong optical activity and circular dichroism. Multilayered forms of the metamaterial are found to be suitable for use as ultrathin polarization rotators and circular polarizers for practical applications.

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Published date: 12 January 2009
Keywords: chirality, circular dichroism, metamaterials, optical materials, optical multilayers, optical rotation, polarisation, refractive index
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 65777
URI: https://eprints.soton.ac.uk/id/eprint/65777
ISSN: 1550-235X
PURE UUID: 4ef993b5-a719-4ba3-b5bc-630ea3021717
ORCID for E. Plum: ORCID iD orcid.org/0000-0002-1552-1840
ORCID for N.I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

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Date deposited: 23 Mar 2009
Last modified: 05 Dec 2019 01:39

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Contributors

Author: E. Plum ORCID iD
Author: J. Zhou
Author: J. Dong
Author: V.A. Fedotov
Author: T. Koschny
Author: C.M. Soukoulis
Author: N.I. Zheludev ORCID iD

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