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Mechanochromic reconfigurable metasurfaces

Mechanochromic reconfigurable metasurfaces
Mechanochromic reconfigurable metasurfaces
The change of optical properties that some usually natural compounds or polymeric materials show upon the application of external stress is named mechanochromism. Herein, an artificial nanomechanical metasurface formed by a subwavelength nanowire array made of molybdenum disulfide, molybdenum oxide, and silicon nitride changes color upon mechanical deformation. The aforementioned deformation induces reversible changes in the optical transmission (relative transmission change of 197% at 654 nm), thus demonstrating a giant mechanochromic effect. Moreover, these types of metasurfaces can exist in two nonvolatile states presenting a difference in optical transmission of 45% at 678 nm, when they are forced to bend rapidly. The wide optical tunability that photonic nanomechanical metasurfaces, such as the one presented here, possess by design, can provide a valuable platform for mechanochromic and bistable responses across the visible and near infrared regime and form a new family of smart materials with applications in reconfigurable, multifunctional photonic filters, switches, and stress sensors.
mechanochromism, metasurfaces, nanomechanics, photonic metamaterials, van der Waals materials
2198-3844
Karvounis, Artemios
878c12bb-c30e-46f4-8c56-86423b41cdba
Aspiotis, Nikolaos
b32d40f9-0496-464e-bfcc-217f57ca9dc3
Zeimpekis, Ioannis
a2c354ec-3891-497c-adac-89b3a5d96af0
Ou, Jun-Yu
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Huang, Chung-Che
825f7447-6d02-48f6-b95a-fa33da71f106
Hewak, Daniel
87c80070-c101-4f7a-914f-4cc3131e3db0
Zheludev, Nikolay
32fb6af7-97e4-4d11-bca6-805745e40cc6
Karvounis, Artemios
878c12bb-c30e-46f4-8c56-86423b41cdba
Aspiotis, Nikolaos
b32d40f9-0496-464e-bfcc-217f57ca9dc3
Zeimpekis, Ioannis
a2c354ec-3891-497c-adac-89b3a5d96af0
Ou, Jun-Yu
3fb703e3-b222-46d2-b4ee-75f296d9d64d
Huang, Chung-Che
825f7447-6d02-48f6-b95a-fa33da71f106
Hewak, Daniel
87c80070-c101-4f7a-914f-4cc3131e3db0
Zheludev, Nikolay
32fb6af7-97e4-4d11-bca6-805745e40cc6

Karvounis, Artemios, Aspiotis, Nikolaos, Zeimpekis, Ioannis, Ou, Jun-Yu, Huang, Chung-Che, Hewak, Daniel and Zheludev, Nikolay (2019) Mechanochromic reconfigurable metasurfaces. Advanced Science. (doi:10.1002/advs.201900974).

Record type: Article

Abstract

The change of optical properties that some usually natural compounds or polymeric materials show upon the application of external stress is named mechanochromism. Herein, an artificial nanomechanical metasurface formed by a subwavelength nanowire array made of molybdenum disulfide, molybdenum oxide, and silicon nitride changes color upon mechanical deformation. The aforementioned deformation induces reversible changes in the optical transmission (relative transmission change of 197% at 654 nm), thus demonstrating a giant mechanochromic effect. Moreover, these types of metasurfaces can exist in two nonvolatile states presenting a difference in optical transmission of 45% at 678 nm, when they are forced to bend rapidly. The wide optical tunability that photonic nanomechanical metasurfaces, such as the one presented here, possess by design, can provide a valuable platform for mechanochromic and bistable responses across the visible and near infrared regime and form a new family of smart materials with applications in reconfigurable, multifunctional photonic filters, switches, and stress sensors.

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e-pub ahead of print date: 12 September 2019
Keywords: mechanochromism, metasurfaces, nanomechanics, photonic metamaterials, van der Waals materials

Identifiers

Local EPrints ID: 434355
URI: https://eprints.soton.ac.uk/id/eprint/434355
ISSN: 2198-3844
PURE UUID: 137f5db7-8138-4144-a69c-13ba70fa1d98
ORCID for Jun-Yu Ou: ORCID iD orcid.org/0000-0001-8028-6130
ORCID for Chung-Che Huang: ORCID iD orcid.org/0000-0003-3471-2463
ORCID for Daniel Hewak: ORCID iD orcid.org/0000-0002-2093-5773
ORCID for Nikolay Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 20 Sep 2019 16:30
Last modified: 21 Sep 2019 00:38

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Contributors

Author: Artemios Karvounis
Author: Nikolaos Aspiotis
Author: Ioannis Zeimpekis
Author: Jun-Yu Ou ORCID iD
Author: Chung-Che Huang ORCID iD
Author: Daniel Hewak ORCID iD

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