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Abstract:

In this work we study the modal characteristics of localized surface plasmons in graphene-coated, circular cross-section wires. Localized surface plasmons are represented in terms of cylindrical multipole partial waves characterized by discrete, complex frequencies that depend on the size of the wire and can be dynamically tuned via a gate voltage. We consider both intrinsically nonplasmonic wires and intrinsically plasmonic wires. In the first case the localized surface plasmons are introduced by the graphene coating, whereas in the second case the localized eigenmodes of the graphene coating are expected to hybridize those already existing in the bare wire. We show that the approach presented here, valid for particle sizes where the retardation effects can be significant, is in good agreement with analytical expressions obtained in the limit when particle size is very small compared to the wavelength of the eigenmode and with results indirectly determined from scattering cross-section spectra. © 2016 Elsevier Ltd.

Registro:

Documento: Artículo
Título:Complex frequencies and field distributions of localized surface plasmon modes in graphene-coated subwavelength wires
Autor:Cuevas, M.; Riso, M.A.; Depine, R.A.
Filiación:Facultad de Ingeniería y Tecnología Informática, Universidad de Belgrano, Villanueva 1324, Buenos Aires, C1426BMJ, Argentina
Grupo de Electromagnetismo Aplicado, Departamento de Física, FCEN, Universidad de Buenos Aires and IFIBA, Consejo Nacional de Investigaciones Científicas y Tecnicas (CONICET), Ciudad Universitaria, Pabellón I, Buenos Aires, C1428EHA, Argentina
Palabras clave:Graphene plasmons; Multiple scattering; Plasmonics; Wires; Coatings; Graphene; Multiple scattering; Particle size; Surface plasmon resonance; Wire; Analytical expressions; Circular cross-sections; Graphene plasmons; Localized surface plasmon; Modal characteristics; Plasmonics; Scattering cross section; Sub-wavelength wires; Plasmons; coating; particle size
Año:2016
Volumen:173
Página de inicio:26
Página de fin:33
DOI: http://dx.doi.org/10.1016/j.jqsrt.2016.01.006
Título revista:Journal of Quantitative Spectroscopy and Radiative Transfer
Título revista abreviado:J. Quant. Spectrosc. Radiat. Transf.
ISSN:00224073
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00224073_v173_n_p26_Cuevas

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Citas:

---------- APA ----------
Cuevas, M., Riso, M.A. & Depine, R.A. (2016) . Complex frequencies and field distributions of localized surface plasmon modes in graphene-coated subwavelength wires. Journal of Quantitative Spectroscopy and Radiative Transfer, 173, 26-33.
http://dx.doi.org/10.1016/j.jqsrt.2016.01.006
---------- CHICAGO ----------
Cuevas, M., Riso, M.A., Depine, R.A. "Complex frequencies and field distributions of localized surface plasmon modes in graphene-coated subwavelength wires" . Journal of Quantitative Spectroscopy and Radiative Transfer 173 (2016) : 26-33.
http://dx.doi.org/10.1016/j.jqsrt.2016.01.006
---------- MLA ----------
Cuevas, M., Riso, M.A., Depine, R.A. "Complex frequencies and field distributions of localized surface plasmon modes in graphene-coated subwavelength wires" . Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 173, 2016, pp. 26-33.
http://dx.doi.org/10.1016/j.jqsrt.2016.01.006
---------- VANCOUVER ----------
Cuevas, M., Riso, M.A., Depine, R.A. Complex frequencies and field distributions of localized surface plasmon modes in graphene-coated subwavelength wires. J. Quant. Spectrosc. Radiat. Transf. 2016;173:26-33.
http://dx.doi.org/10.1016/j.jqsrt.2016.01.006