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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todo:paper_14346060_v62_n2_p227_Grunhut2023-10-03T16:15:44Z Influence of the sign of the refractive index in the reflectivity of a metamaterial surface with localized roughness Grünhut, V. Depine, R.A. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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. |
format |
JOUR |
author |
Grünhut, V. Depine, R.A. |
spellingShingle |
Grünhut, V. Depine, R.A. Influence of the sign of the refractive index in the reflectivity of a metamaterial surface with localized roughness |
author_facet |
Grünhut, V. Depine, R.A. |
author_sort |
Grünhut, V. |
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 |
url |
http://hdl.handle.net/20.500.12110/paper_14346060_v62_n2_p227_Grunhut |
work_keys_str_mv |
AT grunhutv influenceofthesignoftherefractiveindexinthereflectivityofametamaterialsurfacewithlocalizedroughness AT depinera influenceofthesignoftherefractiveindexinthereflectivityofametamaterialsurfacewithlocalizedroughness |
_version_ |
1782031091020857344 |