Reversed rainbow with a nonlocal metamaterial

Journal Article · Mon Dec 29 00:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4905152· OSTI ID:22395630

Marcos, João S.; Costa, João T. ^[1]; Costa, Jorge R. ^[2]; Fernandes, Carlos A. ^[3]

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1. CST AG, Bad Nauheimer Strasse 19, 64289 Darmstadt (Germany)
2. Instituto de Telecomunicações and Instituto Universitário de Lisboa (ISCTE-IUL), 1649-026 Lisboa (Portugal)
3. Instituto de Telecomunicações, and Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa (Portugal)

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.

• OSTI ID: 22395630
• Journal Information: Applied Physics Letters, Vol. 105, Issue 26; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DISTANCE
ELECTROMAGNETISM
FREQUENCY DEPENDENCE
LOSSES
METAMATERIALS
MICROWAVE RADIATION
REFRACTIVE INDEX