Zero-refraction in natural materials and the mechanism of metal superlens

Details Zero-refraction in natural materials and the mechanism of metal superlens Zero-refraction in natural materials and the mechanism of metal superlens

2011-08-21

arxiv.org/abs/1108.4194v1

Physics

Optics

11 pages, 4 figures

Scientific paper

We found that a single negative material has a character of zero-refraction in near field, and point out that the mechanism of a metal superlens to image with the resolution exceeding the diffraction limitation is different from that of a perfect lens made of a double negative material. The principle of metal superlens is disclosed. Our numerical results based on the zero-refraction character coincide with the experimental results well. This work brings new understanding about the single negative materials and will lead the applications of metal superlens in right way.

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