El barghouti, M. and Akjouj, A. and Mir, A. (2018) Effect of graphene layer on the localized surface plasmon resonance (LSPR) and the sensitivity in periodic nanostructure. Photonics and Nanostructures - Fundamentals and Applications, 31. pp. 107-114.

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Abstract

We study the interaction of gold nanoparticles with a graphene film. Graphene is used as a spacer, as thin as possible, between the gold nanoparticles and the detection dielectric medium, and one of the advantages of graphene is to protect the structure, which allows to avoid the oxidation of nanoparticles. We focus our study on the variation of the resonant structure (LSPR) depending on the thickness of the graphene layer (0.34–5 nm). A stronger resonance behavior of positions in the absorption spectrum shows a strong coupling between the LSP on gold nanoparticles and the covering film. Numerical simulations indicate a significant shift of the resonance wavelength structure SiOx/AuNPs/Graphene/SiOx (657.90 nm) compared with experimental results obtained on SiOx/AuNPs/SiOx (574.71 nm) and optimized for the required parameters proposed LSPR system we achieve the highest detection sensitivity range, while the location of points of the electric field on the best corners of the gold-graphene nanoparticles. © 2018 Elsevier B.V.

Item Type: Article
Uncontrolled Keywords: Absorption spectroscopy; Edge detection; Electric fields; Fiber optic sensors; Gold nanoparticles; Graphene; Metal nanoparticles; Plasmons, Detection sensitivity; Dielectric medium; Localized surface plasmon resonance; Periodic nanostructure; Resonance wavelengths; Resonant structures; Sensitivity; Strong coupling, Surface plasmon resonance
Subjects: Computer Science
Divisions: SCIENTIFIC PRODUCTION > Computer Science
Depositing User: Administrateur Eprints Administrateur Eprints
Last Modified: 31 Jan 2020 15:45
URI: http://eprints.umi.ac.ma/id/eprint/2340

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