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The reduction of surface plasmon losses in quasi-suspended graphene

The reduction of surface plasmon losses in quasi-suspended graphene
The reduction of surface plasmon losses in quasi-suspended graphene
Highly confined surface plasmons on graphene attract substantial interest as potential information carriers for highly integrated photonic data processing circuits. However, plasmon losses remain the main obstacle for implementation of such devices. In near-field microscopic experiments performed at the wavelength of 10µm we show that a substantial reduction of plasmon damping can be achieved by placing a nanometric polymer nano-dots spacer between the graphene layer and the supporting silicon oxide slab making graphene quasi-suspended. We argue that reduction of plasmon losses is attributed to weaker coupling with substrate phonons in the quasi-suspended graphene.
nanoscale materials, optical, materials and structures, graphene
1-8
Dubrovkin, A.
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Tao, J.
201b6dbd-62c8-4d1b-aee7-15da60b66fe3
Yu, X.C.
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Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Wang, Q.J.
2fc77391-1dd6-449d-b699-b65076270c6d
Dubrovkin, A.
5b62f870-f3a9-4311-8dea-3c2ba39ee048
Tao, J.
201b6dbd-62c8-4d1b-aee7-15da60b66fe3
Yu, X.C.
0079f855-7b7e-4600-8346-c250d1730168
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Wang, Q.J.
2fc77391-1dd6-449d-b699-b65076270c6d

Dubrovkin, A., Tao, J., Yu, X.C., Zheludev, N.I. and Wang, Q.J. (2015) The reduction of surface plasmon losses in quasi-suspended graphene. Scientific Reports, 5 (9837), 1-8. (doi:10.1038/srep09837). (PMID:25943185)

Record type: Article

Abstract

Highly confined surface plasmons on graphene attract substantial interest as potential information carriers for highly integrated photonic data processing circuits. However, plasmon losses remain the main obstacle for implementation of such devices. In near-field microscopic experiments performed at the wavelength of 10µm we show that a substantial reduction of plasmon damping can be achieved by placing a nanometric polymer nano-dots spacer between the graphene layer and the supporting silicon oxide slab making graphene quasi-suspended. We argue that reduction of plasmon losses is attributed to weaker coupling with substrate phonons in the quasi-suspended graphene.

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Accepted/In Press date: 20 March 2015
Published date: 6 May 2015
Keywords: nanoscale materials, optical, materials and structures, graphene
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 376956
URI: https://eprints.soton.ac.uk/id/eprint/376956
PURE UUID: 36989df9-aa01-4c2b-8a11-f2091f4a382c
ORCID for N.I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

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Date deposited: 18 May 2015 10:03
Last modified: 01 Oct 2019 01:01

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