Phys. Rev. Lett. 90, 137401 (2003) [4 pages]Experimental Observations of a Left-Handed Material That Obeys Snell’s LawReceived 1 October 2002; published 3 April 2003 We measure two-dimensional profiles of collimated microwave beams transmitted through composite wire and split-ring resonator prisms. Prior experiments suggest these structures have a negative index of refraction, though these claims have been questioned. Our 2D measurements demonstrate that transmission obeys Snell’s law with a negative index, confirming the refractive nature of this signal and refuting alternatives posed in the criticisms. In addition, we present preliminary evidence that a flat rectangular slab of this material can focus power from a point source. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.137401
DOI:
10.1103/PhysRevLett.90.137401
PACS:
78.20.Ci, 41.20.Jb, 42.70.Qs, 73.20.Mf
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