Long After-glow Products
Glow in the dark products are phosphorescent materials that continue to glow even after the light source is removed. Light energy is absorbed by the material and stored. When the light source is removed, the material can still glow and last for a long period of time.
Applications
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Fluorescent Inks
The rise of counterfeits is a serious problem affecting all types of products ranging from legal documents, currencies, to high-end branded goods. For example, UV-to-visible down-conversion fluorescent dyes have been used as security features in many applications like currencies, identity cards and banking accounts.
