1. Reversed rainbow with a nonlocal metamaterial.
- Author
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Morgado, Tiago A., Marcos, João S., Costa, João T., Costa, Jorge R., Fernandes, Carlos A., and Silveirinha, Mário G.
- Subjects
- *
METAMATERIALS , *ELECTROMAGNETISM , *METALLIC wire , *REFRACTIVE index , *NUMERICAL analysis - 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. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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