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Highly resonant graphene plasmon hotspots in complex nanoresonator geometries

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Title: Highly resonant graphene plasmon hotspots in complex nanoresonator geometries
Authors: Hart, WS
Panchal, V
Melios, C
Strupiński, W
Kazakova, O
Phillips, CC
Item Type: Journal Article
Abstract: Van der Waals surface polariton nanostructures are promising candidates for miniaturisation of electromagnetic devices through the nanoscale confinement of infrared light. To fully exploit these nanoresonators, a computationally efficient model is necessary to predict polariton behaviour in complex geometries. Here, we develop a general wave model of surface polaritons in 2D geometries smaller than the polariton wavelength. Using geometric approximation widely tuneable infrared nanoimaging and local work function microscopy, we test this model against complex mono-/bi-layer graphene plasmon nanoresonators. Direct imaging of highly resonant graphene plasmon hotspots confirms that the model provides quantitatively accurate, analytical predictions of nanoresonator behaviour. The insights built with such models are crucial to the development of practical plasmonic nanodevices.
Issue Date: 12-Feb-2019
Date of Acceptance: 21-Jan-2019
URI: http://hdl.handle.net/10044/1/65974
DOI: https://doi.org/10.1088/2053-1583/ab0051
ISSN: 2053-1583
Publisher: IOP Publishing
Journal / Book Title: 2D Materials
Volume: 6
Issue: 2
Copyright Statement: © 2019 IOP Publishing Ltd. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (E
Royal Society
Funder's Grant Number: EP/K029398/1
EP/K503733/1
IA160044
Keywords: Science & Technology
Technology
Materials Science, Multidisciplinary
Materials Science
Fermi energy
s-SNOM
SiC
KPFM
graphene plasmon nanoresonators
van der Waals materials
2D polariton wave model
EPITAXIAL GRAPHENE
DOPED GRAPHENE
POLARITONS
LIGHT
EDGE
Publication Status: Published
Article Number: 021003
Online Publication Date: 2019-01-21
Appears in Collections:Physics
Experimental Solid State
Faculty of Natural Sciences