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Plasmons in one-dimensional channels coated with graphene

Abstract

Graphene has emerged since 2011 as a material that will control the THz radiation and mid-IR through plasmonic effects, giving rise to a new class of useful metamaterials in photonics and optoelectronic [1]. In contrast to the two-dimensional plasmon gas, there plasmon graphene at room temperature, so that its application in non-cryogenic system is a real advantage. The excitement of plasmonic polaritões surfaces can get the different form, many of them relatives of the plasmonic metals such as gold, silver, or copper. Also the interaction of quantum emitters (such as for example dye molecules) with the graphene plasmon opens new possibilities for manipulation of radiation scales less than the wavelength of the radiation in vacuum. Moreover, the possibility of manufacturing graphene-based nanostructures such as quantum dots and quantum anti-points, allows to modify the optical properties of graphene and further create new materials with new functionality in the THz range and mid-IR. In this context, there is also the possibility of manufacturing coated channels with graphene and metal diffraction gratings coated with this material. While the former allows driving plasmon along a privileged direction allows the second polaritões plasmonic excitation in continuous graphene sheets. The study of these systems is still in its early stages, so their detailed study is very necessary. For this purpose can be used two analytical techniques: the method of effective means, approximate methods that allows you to tackle the issue of delay; and techniques electrostatic exctas valid when the delay is not important. In this project we will examine using these two methodologies. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
CHAVES, A. J.; AMORIM, B.; BLUDOV, YU. V.; GONCALVES, P. A. D.; PERES, N. M. R. Scattering of graphene plasmons at abrupt interfaces: An analytic and numeric study. Physical Review B, v. 97, n. 3 JAN 23 2018. Web of Science Citations: 4.

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