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. 2017 Oct 6;6(10):e17057. doi: 10.1038/lsa.2017.57

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Copyright © 2017 The Author(s)

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/4.0/

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Theoretical calculations of SP interference patterns in the two-dimensional graphene nanostructures. (a) Schematic showing the excitation and detection of the graphene SP waves using an AFM metalized tip. The graphene (Gr) nanostructures are fabricated on a SiO₂ substrate. (b–f) Interference patterns of the graphene SP waves within the graphene nanostructures with two, three, four, five and six boundaries. The white double-headed arrows indicate the separation, L, between the centers and boundaries, which are fixed at 1.5λ_sp. (g) Interference pattern of the graphene SP waves in a circular nanostructure. The white double-headed arrow indicates the radius, which is set as 1.5λ_sp.