"PHOTONIC: Unnatural optics create precise photonic lens"
Optical experiments using arrays of nanowires are demonstrating that the concept of a negative refractive index could be realized in practical systems. The work, done at Purdue University, attempts to reproduce results similar to those shown last year at the University of California at San Diego using microwave radiation. A negative refractive index, which is not found in nature, would allow scientists to construct new types of microscopes with unprecedented resolution and could allow the creation of novel photonic devices.

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Story in EE Times: http://eet.com/at/news/OEG20020826S0041