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Optics

Farewell to Flatland

Metamaterials are the key to perfect lenses, 'invisibility' cloaks and slow and stored broadband light. A three-dimensional optical metamaterial with a negative refractive index has now been created.

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Figure 1: Negative refraction.

E. SCHREMPP/SPL

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Hess, O. Farewell to Flatland. Nature 455, 299–300 (2008). https://doi.org/10.1038/455299a

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