Experimental demonstration of negative index of refraction
Jiangfeng Zhou, Thomas Koschny, Lei Zhang, Gary Tuttle, Costas M. Soukoulis
Applied Physics Letters
Volume: 88, Issue: 22, May 2006
We introduce an improved and simplified structure made of periodic arrays of pairs of H-shaped metallic wires that offer a potentially simpler approach in building negative-index materials. Using
simulations and microwave experiments, we have investigated the negative-index n properties of these structures. We have measured experimentally both the transmittance and the reflectance properties and found unambiguously that a negative refractive index with Ren0 and Imn Ren. The same is true for and . Our results show that H-shaped wire pairs can be used very effectively in producing materials with negative refractive indices.
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