Influence of the sign of the refractive index in the reflectivity of a metamaterial surface with localized roughness

To study the scattering properties of metamaterials, we generalize two scattering methods developed for conventional (non-magnetic) isotropic materials to the case of materials with arbitrary values (positive or negative) of magnetic permeability and electric permittivity. The generalized methods ar...

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Autores principales: Grünhut Duenyas, Vivian, Depine, Ricardo Angel
Publicado: 2011
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346060_v62_n2_p227_Grunhut
http://hdl.handle.net/20.500.12110/paper_14346060_v62_n2_p227_Grunhut
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_14346060_v62_n2_p227_Grunhut
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spelling paper:paper_14346060_v62_n2_p227_Grunhut2023-06-08T16:15:32Z Influence of the sign of the refractive index in the reflectivity of a metamaterial surface with localized roughness Grünhut Duenyas, Vivian Depine, Ricardo Angel To study the scattering properties of metamaterials, we generalize two scattering methods developed for conventional (non-magnetic) isotropic materials to the case of materials with arbitrary values (positive or negative) of magnetic permeability and electric permittivity. The generalized methods are used to study the changes produced in the reflectivity of a metamaterial surface with localized roughness when the relative refractive index changes sign. Our results show that, unlike the case of a plane surface whose reflectivity is unaffected by the change of sign of the relative refractive index, in rough surfaces the change of sign is manifested in the reflectivity, even for very low roughness, particularly in observation directions away from the specular direction. © 2011 EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg. Fil:Grünhut, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Depine, R.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346060_v62_n2_p227_Grunhut http://hdl.handle.net/20.500.12110/paper_14346060_v62_n2_p227_Grunhut
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description To study the scattering properties of metamaterials, we generalize two scattering methods developed for conventional (non-magnetic) isotropic materials to the case of materials with arbitrary values (positive or negative) of magnetic permeability and electric permittivity. The generalized methods are used to study the changes produced in the reflectivity of a metamaterial surface with localized roughness when the relative refractive index changes sign. Our results show that, unlike the case of a plane surface whose reflectivity is unaffected by the change of sign of the relative refractive index, in rough surfaces the change of sign is manifested in the reflectivity, even for very low roughness, particularly in observation directions away from the specular direction. © 2011 EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg.
author Grünhut Duenyas, Vivian
Depine, Ricardo Angel
spellingShingle Grünhut Duenyas, Vivian
Depine, Ricardo Angel
Influence of the sign of the refractive index in the reflectivity of a metamaterial surface with localized roughness
author_facet Grünhut Duenyas, Vivian
Depine, Ricardo Angel
author_sort Grünhut Duenyas, Vivian
title Influence of the sign of the refractive index in the reflectivity of a metamaterial surface with localized roughness
title_short Influence of the sign of the refractive index in the reflectivity of a metamaterial surface with localized roughness
title_full Influence of the sign of the refractive index in the reflectivity of a metamaterial surface with localized roughness
title_fullStr Influence of the sign of the refractive index in the reflectivity of a metamaterial surface with localized roughness
title_full_unstemmed Influence of the sign of the refractive index in the reflectivity of a metamaterial surface with localized roughness
title_sort influence of the sign of the refractive index in the reflectivity of a metamaterial surface with localized roughness
publishDate 2011
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346060_v62_n2_p227_Grunhut
http://hdl.handle.net/20.500.12110/paper_14346060_v62_n2_p227_Grunhut
work_keys_str_mv AT grunhutduenyasvivian influenceofthesignoftherefractiveindexinthereflectivityofametamaterialsurfacewithlocalizedroughness
AT depinericardoangel influenceofthesignoftherefractiveindexinthereflectivityofametamaterialsurfacewithlocalizedroughness
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