Researchers created carbon dots that fluoresce in different colors depending on concentration, acidity and surrounding liquid ...

Colors in nature are not always produced by pigments. Pearls, bird feathers, butterfly wings and opals display brilliant ...

Physicists and vision scientists are lining up behind a provocative claim: the rich color we call purple is not a property of light at all, but a story the brain tells itself. Light in the real world ...

A new shape-shifting material can change both its texture and color in seconds, inspired by the camouflage abilities of octopuses. By precisely controlling how a polymer swells with water, researchers ...