Continuous metal plasmonic frequency selective surfaces
Continuous metal plasmonic frequency selective surfaces
In the microwave part of the spectrum, where losses are minimal, metal films regularly patterned (perforated) on the sub-wavelength scale achieve spectral selectivity by balancing the transmission and reflection characteristics of the surface. Here we show for optical frequencies, where joule losses are important, that periodic structuring of a metal film without violation of continuity (i.e. without perforation) is sufficient to achieve substantial modification of reflectivity. By engineering the geometry of the structure imposed on a surface one can dramatically change the perceived color of the metal without employing any form of chemical modification, thin-film coating or diffraction effects. This novel frequency selective effect is underpinned by plasmonic Joule losses in the constituent elements of the patterns (dubbed 'intaglio' and 'bas relief' metamaterials to distinguish indented and raised structures respectively) and is specific to the optical part of the spectrum. It has the advantage of maintaining the integrity of metal surfaces and is well suited to high-throughput fabrication via techniques such as nano-imprint.
23279-23285
Zhang, Jianfa
7ce15288-2016-4b9c-8244-7aed073363ca
Ou, J-Y.
3fb703e3-b222-46d2-b4ee-75f296d9d64d
Papasimakis, Nikitas
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Chen, Yifang
fb868aa4-ecb4-4203-a0a8-88c2195a2bae
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
1 November 2011
Zhang, Jianfa
7ce15288-2016-4b9c-8244-7aed073363ca
Ou, J-Y.
3fb703e3-b222-46d2-b4ee-75f296d9d64d
Papasimakis, Nikitas
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Chen, Yifang
fb868aa4-ecb4-4203-a0a8-88c2195a2bae
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Zhang, Jianfa, Ou, J-Y., Papasimakis, Nikitas, Chen, Yifang, MacDonald, Kevin F. and Zheludev, Nikolay I.
(2011)
Continuous metal plasmonic frequency selective surfaces.
Optics Express, 19 (23), .
(doi:10.1364/OE.19.023279).
Abstract
In the microwave part of the spectrum, where losses are minimal, metal films regularly patterned (perforated) on the sub-wavelength scale achieve spectral selectivity by balancing the transmission and reflection characteristics of the surface. Here we show for optical frequencies, where joule losses are important, that periodic structuring of a metal film without violation of continuity (i.e. without perforation) is sufficient to achieve substantial modification of reflectivity. By engineering the geometry of the structure imposed on a surface one can dramatically change the perceived color of the metal without employing any form of chemical modification, thin-film coating or diffraction effects. This novel frequency selective effect is underpinned by plasmonic Joule losses in the constituent elements of the patterns (dubbed 'intaglio' and 'bas relief' metamaterials to distinguish indented and raised structures respectively) and is specific to the optical part of the spectrum. It has the advantage of maintaining the integrity of metal surfaces and is well suited to high-throughput fabrication via techniques such as nano-imprint.
Text
oe-19-23-23279
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Published date: 1 November 2011
Organisations:
Optoelectronics Research Centre
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Local EPrints ID: 202363
URI: http://eprints.soton.ac.uk/id/eprint/202363
ISSN: 1094-4087
PURE UUID: 5186ce4b-ddb8-41ed-8066-b48f45d186fc
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Date deposited: 07 Nov 2011 10:09
Last modified: 15 Mar 2024 03:39
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Author:
Jianfa Zhang
Author:
J-Y. Ou
Author:
Yifang Chen
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