Today’s Totally Cool Tech: The Invisibility-Cloak Material that Bends Light “Backward”

Invisibility cloaks may be a bit closer to reality, researchers say, thanks to the development of two new materials that are the first to bend visible light the “wrong” way in three dimensions. The so-called metamaterials are artificial composites designed to manipulate light in ways that natural materials can’t—in these cases by refracting it backward.

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