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18 August 2005 Composite materials with giant anisotropy and negative index of refraction
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We demonstrate that a nanostructured plasmonic composite material can show negative index of refraction at infrared and optical frequencies. In contrast to conventional negative refraction materials, our design does not require periodicity and thus is highly tolerant to fabrication defects. Moreover, since the proposed material is intrinsically non-magnetic (μ ≡ 1), its performance is not limited to proximity of a resonance so that the resulting structure has relatively low loss. We develop the analytical description of the relevant electromagnetic phenomena and justify our analytic results via numerical solutions of Maxwell equations.
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Viktor A. Podolskiy, Leo A. Alekseyev, and Evgenii E. Narimanov "Composite materials with giant anisotropy and negative index of refraction", Proc. SPIE 5928, Plasmonic Nano-imaging and Nanofabrication, 59280C (18 August 2005);

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