Trapping and Guiding Surface Plasmons in Curved Graphene Landscapes

Daria Smirnova; S. Hossein Mousavi; Zheng Wang; Yuri S. Kivshar; Alexander B. Khanikaev

doi:10.1021/acsphotonics.6b00116

Trapping and Guiding Surface Plasmons in Curved Graphene Landscapes

Daria Smirnova, S. Hossein Mousavi, Zheng Wang, Yuri S. Kivshar, Alexander B. Khanikaev^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

Abstract

We demonstrate that graphene placed on top of curved substrates offers a novel approach for trapping and guiding surface plasmons. Monolayer graphene with a spatially varying curvature exhibits an effective trapping potential for graphene plasmons near curved areas such as bumps, humps, and wells. We derive the governing equation for describing such localized channel plasmons guided by curved graphene and validate our theory by first-principle numerical simulations. The proposed confinement mechanism enables plasmon guiding by the regions of maximal curvature, and it offers a versatile platform for manipulating light in planar landscapes. In addition, isolated deformations of graphene such as bumps are shown to support localized surface modes and resonances, suggesting a new way to engineer graphene-based metasurfaces.

Original language	English
Pages (from-to)	875-880
Number of pages	6
Journal	ACS Photonics
Volume	3
Issue number	5
DOIs	https://doi.org/10.1021/acsphotonics.6b00116
Publication status	Published - 18 May 2016

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abstract = "We demonstrate that graphene placed on top of curved substrates offers a novel approach for trapping and guiding surface plasmons. Monolayer graphene with a spatially varying curvature exhibits an effective trapping potential for graphene plasmons near curved areas such as bumps, humps, and wells. We derive the governing equation for describing such localized channel plasmons guided by curved graphene and validate our theory by first-principle numerical simulations. The proposed confinement mechanism enables plasmon guiding by the regions of maximal curvature, and it offers a versatile platform for manipulating light in planar landscapes. In addition, isolated deformations of graphene such as bumps are shown to support localized surface modes and resonances, suggesting a new way to engineer graphene-based metasurfaces.",

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AU - Wang, Zheng

AU - Kivshar, Yuri S.

AU - Khanikaev, Alexander B.

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N2 - We demonstrate that graphene placed on top of curved substrates offers a novel approach for trapping and guiding surface plasmons. Monolayer graphene with a spatially varying curvature exhibits an effective trapping potential for graphene plasmons near curved areas such as bumps, humps, and wells. We derive the governing equation for describing such localized channel plasmons guided by curved graphene and validate our theory by first-principle numerical simulations. The proposed confinement mechanism enables plasmon guiding by the regions of maximal curvature, and it offers a versatile platform for manipulating light in planar landscapes. In addition, isolated deformations of graphene such as bumps are shown to support localized surface modes and resonances, suggesting a new way to engineer graphene-based metasurfaces.

AB - We demonstrate that graphene placed on top of curved substrates offers a novel approach for trapping and guiding surface plasmons. Monolayer graphene with a spatially varying curvature exhibits an effective trapping potential for graphene plasmons near curved areas such as bumps, humps, and wells. We derive the governing equation for describing such localized channel plasmons guided by curved graphene and validate our theory by first-principle numerical simulations. The proposed confinement mechanism enables plasmon guiding by the regions of maximal curvature, and it offers a versatile platform for manipulating light in planar landscapes. In addition, isolated deformations of graphene such as bumps are shown to support localized surface modes and resonances, suggesting a new way to engineer graphene-based metasurfaces.

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Trapping and Guiding Surface Plasmons in Curved Graphene Landscapes

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