Metamaterials are best known for their ability to bend light in the opposite direction to that of all materials found in nature. A hidden ability of these man-made materials has now been discovered. See Letter p.369
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Zhang, X. Extreme light-bending power. Nature 470, 343–344 (2011). https://doi.org/10.1038/470343a
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DOI: https://doi.org/10.1038/470343a
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