Nano- and micro-auxetic plasmonic materials
Nano- and micro-auxetic plasmonic materials
Auxetics, materials with a negative Poisson's ratio, are rare in nature. They possess the distinct mechanical property of expanding laterally upon being stretched which leads to important applications such as mechanical impact shields and particle filters. Several design concepts and fabrication techniques for artificial planar arrays of auxetic meta-molecules, with typical lattice parameters from millimeters to tens of microns, have been developed. Here we report, for the first time, planar auxetic materials with lattice parameters and optical properties of plasmonic metamaterials for the mid-infrared to optical part of the spectrum. These first auxetics with lattice parameters in the range from a few microns to hundreds of nanometers are fabricated by structuring a nanoscale plasmonic film supported by a dielectric nanomembrane. Under uniaxial tension or compression, our materials exhibit negative Poisson’s ratios between -0.3 and -0.5. Infrared and optical spectra of these structures show plasmonic resonances, indicating that such materials could act as novel nanomechanical light modulators.
auxetics, plasmonics, nanomechanical devices, metamaterials
5176-5180
Valente, João
b1d50ead-5c3d-4416-ad05-3beb1b373146
Plum, Eric
50761a26-2982-40df-9153-7aecc4226eb5
Youngs, Ian J.
d479caee-b86f-4c30-bf32-e3c4d7968cd3
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
13 July 2016
Valente, João
b1d50ead-5c3d-4416-ad05-3beb1b373146
Plum, Eric
50761a26-2982-40df-9153-7aecc4226eb5
Youngs, Ian J.
d479caee-b86f-4c30-bf32-e3c4d7968cd3
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Valente, João, Plum, Eric, Youngs, Ian J. and Zheludev, Nikolay I.
(2016)
Nano- and micro-auxetic plasmonic materials.
Advanced Materials, 28 (26), .
(doi:10.1002/adma.201600088).
Abstract
Auxetics, materials with a negative Poisson's ratio, are rare in nature. They possess the distinct mechanical property of expanding laterally upon being stretched which leads to important applications such as mechanical impact shields and particle filters. Several design concepts and fabrication techniques for artificial planar arrays of auxetic meta-molecules, with typical lattice parameters from millimeters to tens of microns, have been developed. Here we report, for the first time, planar auxetic materials with lattice parameters and optical properties of plasmonic metamaterials for the mid-infrared to optical part of the spectrum. These first auxetics with lattice parameters in the range from a few microns to hundreds of nanometers are fabricated by structuring a nanoscale plasmonic film supported by a dielectric nanomembrane. Under uniaxial tension or compression, our materials exhibit negative Poisson’s ratios between -0.3 and -0.5. Infrared and optical spectra of these structures show plasmonic resonances, indicating that such materials could act as novel nanomechanical light modulators.
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NanoAuxetics_17Mar_clean.pdf
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Accepted/In Press date: 18 February 2016
e-pub ahead of print date: 3 May 2016
Published date: 13 July 2016
Keywords:
auxetics, plasmonics, nanomechanical devices, metamaterials
Organisations:
Optoelectronics Research Centre
Identifiers
Local EPrints ID: 390154
URI: http://eprints.soton.ac.uk/id/eprint/390154
ISSN: 1521-4095
PURE UUID: 6e94679f-8bfb-4ca2-bbb3-33a7930ddf9c
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Date deposited: 21 Mar 2016 13:52
Last modified: 15 Mar 2024 05:26
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Contributors
Author:
João Valente
Author:
Ian J. Youngs
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