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Physics could soon make it possible to replace those bulky, heavy, glass lenses on cameras with wafer-thin "metalenses" — materials microscopically engineered to focus light at a fraction of the weight and size of traditional lensing.

A team from Harvard University's school of engineering has designed a metalens that can focus nearly the entire spectrum of visible light, the researchers reported Jan. 1 in the journal Nature Nanotechnology. Previous metalenses could focus only narrow color wavelengths, or wavelengths outside the visible spectrum. [Rainbow Album: The Many Colors of the Sun]

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Category: Science