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Plasmonics: Backward waves moving forward

Plasmonics: Backward waves moving forward
Author: M. Wegener, G. Dolling, and S. Linden links:
Source: Nature Mater. 6, 475 (2007)
Date: 2007

Abstract:

he positive aspect of negative refraction is to open new possibilities for squeezing light into tight spaces. Now, a metallic nanostructure pushes all-angle negative refraction into the visible spectrum.