The absorption of energy by the electrons in the UV-visible ink enables this to happen. įluorescence is caused by a conversion of energy when the invisible ultraviolet falls on the fluorescent surface, it is absorbed and re-emitted as visible light radiation. When the black light falls upon the UV-visible ink, it makes the ink fluoresce, where it emits visible light and make the message readable for human eyes. It will cause no damage to eyes nor risks of skin cancer. Such wavelength are very narrow and will fall within a much broader band than regular fluorescent black lights. This near-ultraviolet radiant energy is also called black light which fall just outside the visible spectrum with a wavelength of 380 nm. The UV LEDs used to read the message written by UV markers emits near-ultraviolet light. Photoinitiators is a very important element for making the ink as it is the substance that absorbs the UV mission of a UV light, which enable the marker to work. All of the three contain acrylic monomers which contain a diluent and a photoinitiator to participate in the curing reaction and to respond to UV radiation. There are different types of UV-invisible ink: opaque, semi-opaque and translucent. ![]() ![]() The main components include dilute laundry detergent, body fluids, tonic water and vitamin B-12 dissolved in vinegar. Modern UV-invisible ink is mainly made by a fluorescent derived from things in nature that glow when exposed to an ultraviolet light. The ink used in UV markers has been made from various things in the past such as lemon juice, vinegar, diluted blood or even urine.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |