UV-sensitive materials

UV-sensitive materials are substances that change in response to ultraviolet (UV) light exposure. When UV light hits these materials, they undergo chemical or physical changes such as color shifts, fluorescence, or alteration in properties. This makes them useful for applications like UV detection, protective coatings, or security features on currency and identification cards. Their sensitivity depends on their chemical composition, which allows them to react specifically to UV wavelengths, often invisible to the naked eye, providing useful visual or functional responses without affecting their appearance under normal light.