Chameleon inspires ‘smart skin’ that changes color in the sun | National Geographic

Chemists used photonic crystals to develop a flexible smart skin that reacts to heat and sunlight while maintaining a near constant volume. Potential applications include camouflage, chemical sensing and anti-counterfeiting tags.

Source: https://www.nationalgeographic.com/animals/2019/09/chameleon-inspired-smart-skin-changes-color/