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Title: Reversed rainbow with a nonlocal metamaterial
Authors: Morgado, T.
Marcos, J.
Costa, Jorge T.
Costa, J. R.
Fernandes, C. A.
Silveirinha, M. G.
Keywords: Metamaterial
Anomalous material dispersion
Refractive index
Issue Date: 2014
Publisher: American Institute of Physics
Abstract: One of the intriguing potentials of metamaterials is the possibility to realize a nonlocal electromagnetic reaction, such that the effective medium response at a given point is fundamentally entangled with the macroscopic field distribution at long distances. Here, it is experimentally and numerically verified that a microwave nonlocal metamaterial formed by crossed metallic wires enables a low-loss broadband anomalous material response such that the refractive index decreases with frequency. Notably, it is shown that an electromagnetic beam refracted by our metamaterial prism creates a reversed microwave rainbow.
Description: WOS:000347171300050 (Nº de Acesso Web of Science)
Peer reviewed: Sim
DOI: 10.1063/1.4905152
ISSN: 0003-6951
Publisher version: The definitive version is available at:
Appears in Collections:IT-RI - Artigo em revista internacional com arbitragem científica
CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica

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