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A chameleon that instantly changes color to its surroundings. This is real or fake? #viralvideo #fakevideo

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🇳🇱 AMSTERDAM SCIENTISTS CREATE “CHAMELEON SKIN” THAT CHANGES COLOR WITHOUT PIGMENT Scientists at the University of Amsterdam have developed a new nanomaterial that changes color like a chameleon, using no pigment, no paint, and no electricity. It is made from an extremely thin layer of silicon, about one thousandth the width of a human hair. The surface is cut with patterns so small they are invisible to the eye, inspired by the Japanese art of kirigami, which uses cuts and folds to make flexible designs. When the material stretches, those tiny shapes twist and tilt, changing how light bounces off the surface. The color shift comes from light interference, not chemical dyes. As the spacing between the nanostructures changes, different wavelengths of light cancel or reinforce each other, creating visible color shifts. The same natural physics explains why soap bubbles shimmer with rainbow patterns or why butterfly wings flash blue and green. Lead researcher Davide Ruzzene explained, “By nanopatterning the thin silicon membrane, we made it act as both a mechanical metamaterial and an optical metasurface, letting structure, not pigment, control color.” In simpler terms, the material physically moves and optically transforms at the same time. Because it does not rely on power or fading dyes, it could be used in military camouflage that changes color in motion, medical bandages that show strain or swelling, or flexible displays that never need charging. This is not science fiction but real nanoscience, turning light and motion into a living display. Source: Eugene, PhysOrg

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