Germany's dependence on these critical raw materials became apparent once again following the customs dispute in April, when ...

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Physicists at ETH Zurich have developed a lens that can transform infrared light into visible light by halving the wavelength ...

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Scientists in Switzerland have developed an ultra-thin metalens that converts invisible infrared light into visible light by ...

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Physicists have developed a lens with 'magic' properties. Ultra-thin, it can transform infrared light into visible light by halving the wavelength of incident light.