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Engineers built an invisibility cloak using metamaterials.
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โ€ข Footage courtesy: Thorlabs (@thorlabs) โ€” https://www.youtube.com/watch?v=4IrDscl5F9E
โ€ข Footage courtesy: UNSW eLearning (@unswelearning) โ€” https://www.youtube.com/watch?v=skRmyhSOu28

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Transcript
00:00Engineers engineer nanostructures that guide light around objects.
00:04Standard optical materials scatter and reflect light waves,
00:08revealing hidden objects by disrupting their surrounding wavefronts.
00:12Common Sense says bouncing rays create reflection,
00:15but these artificial atomic structures force photons to take a detour instead.
00:21Tiny nano antennas bend light completely around the central barrier
00:25before merging the beams back together smoothly.
00:28This precise optical manipulation guides light around objects
00:32while researchers use nanostructured silicon to control light waves.
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