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Nature 456, 49 (6 November 2008) | doi:10.1038/456049b; Published online 5 November 2008

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Optics: Metamaterial Persian carpets

Ana Lopes

Metamaterials gained renown as a way of creating invisibility cloaks — devices that could make an object 'disappear' before one's eyes. Less well known is that they can also act as detectors for biological compounds.

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