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Author(s): Morgado, T.
Marcos, J.
Costa, Jorge T.
Costa, J. R.
Fernandes, C. A.
Silveirinha, M. G.
Date: 2014
Title: Reversed rainbow with a nonlocal metamaterial
Volume: 105
Number: 26
Pages: 264101-264105
ISSN: 0003-6951
DOI (Digital Object Identifier): 10.1063/1.4905152
Keywords: Metamaterial
Anomalous material dispersion
Refractive index
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.
Peerreviewed: Sim
Access type: Open Access
Appears in Collections:CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica
IT-RI - Artigos em revistas científicas internacionais com arbitragem científica

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