期刊
APPLIED PHYSICS LETTERS
卷 84, 期 13, 页码 2244-2246出版社
AMER INST PHYSICS
DOI: 10.1063/1.1690471
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Negative refraction can occur at the interface between vacuum and, an indefinite medium an anisotropic medium for which not all elements of the permittivity and permeability tensors have the same sign. We show experimentally and via simulations that a metamaterial composed of split ring resonators, designed to provide a permeability equal to -1 along the longitudinal axis, will redirect s-polarized electromagnetic waves from a nearby source to a partial focus. The dispersion characteristics of indefinite media prohibit the possibility of true aplanatic points for a planar slab; however, by contouring the surfaces aplanatic points may be realized, as well as other geometrical optical behavior. (C) 2004 American Institute of Physics.
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