The role of magnetic dipoles and non-zero-order Bragg waves in metamaterial perfect absorbers.
Opt Express
; 21(3): 3540-6, 2013 Feb 11.
Article
em En
| MEDLINE
| ID: mdl-23481811
ABSTRACT
We develop a simple treatment of a metamaterial perfect absorber (MPA) based on grating theory. We analytically prove that the condition of MPA requires the existence of two currents, which are nearly out of phase and have almost identical amplitude, akin to a magnetic dipole. Furthermore, we show that non-zero-order Bragg modes within the MPA may consume electromagnetic energy significantly.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Refratometria
/
Modelos Teóricos
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Estados Unidos