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Highly resonant graphene plasmon hotspots in complex nanoresonator geometries

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Hart+et+al_2019_2D_Mater._10.1088_2053-1583_ab0051.pdfFile embargoed until 21 January 20201.29 MBAdobe PDF    Request a copy
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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: 21-Jan-2019
Date of Acceptance: 21-Jan-2019
URI: http://hdl.handle.net/10044/1/65974
DOI: https://dx.doi.org/10.1088/2053-1583/ab0051
ISSN: 2053-1583
Publisher: IOP Publishing
Journal / Book Title: 2D Materials
Copyright Statement: © 2019 IOP Publishing Ltd. This is an author-created, un-copyedited version of an article accepted for publication in 2D Materials. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher authenticated version is available online at https://dx.doi.org/10.1088/2053-1583/ab0051
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/K029398/1
Publication Status: Published online
Embargo Date: 2020-01-21
Online Publication Date: 2019-01-21
Appears in Collections:Physics
Experimental Solid State
Faculty of Natural Sciences



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