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a honeycomb structure holds a photon sieve cut to focus extreme uv light

UV Photon Sieve

New photon sieves consist of a honeycomb structure supporting a super-thin membrane cut to focus extreme-ultraviolet light. In this sieve, the largest gaps and holes can be seen in the center hexagon, but the rest are too small for the human eye to detect.

Image Credit: NASA / Chris Gunn
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