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Negative refraction and partial focusing with a crossed wire mesh: Physical insights and experimental verification

Morgado, T. A. ; Marcos, J. ; Maslovski , S. ; Silveirinha, M. G.

Applied Physics Letters Vol. 101, Nº 021104, pp. 1 - 4, July, 2012.

ISSN (print): 0003-6951
ISSN (online): 0003-6951

Journal Impact Factor: 3,726 (in 2008)

Digital Object Identifier: 10.1063/1.4734510

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Abstract
We experimentally verify that a flat metamaterial lens formed by nonconnected crossed metallic wires enables the partial focusing of electromagnetic waves, as a consequence of the phenomenon of all-angle broadband negative refraction in such media. We prove that the strength of the negative refraction effect can be controlled by adjusting the angle between the crossed wires.