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Phys Rev Lett. 2002 Nov 18;89(21):213902. Epub 2002 Nov 4.

A metamaterial for directive emission.

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Institut Fresnel, Faculté des Sciences et Techniques de St. Jérôme, case 161, Avenue Escadrille Normandie-Niemen, 13397 Marseille cedex 20, France.


In this paper we present the first results on emission in metamaterial. We show how the specific properties of metallic composite material can modify the emission of an embedded source. We show that under proper conditions the energy radiated by a source embedded in a slab of metamaterial will be concentrated in a narrow cone in the surrounding media. An experimental demonstration of this effect is given in the microwave domain, and the constructed antenna has a directivity equivalent to the best reported results with photonic-crystal-based antennas but using a completely different physical principle [B. Temelkuaran, J. Appl. Phys. 87, 603 (2000)]].

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