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photoluminescence |
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photoluminescence [¦fōd·ō‚lü·mə′nes·əns] (atomic physics) Luminescence stimulated by visible, infrared, or ultraviolet radiation. Photoluminescence A luminescence excited in a body by some form of electromagnetic radiation incident on the body. The term photoluminescence is generally limited to cases in which the incident radiation is in the ultraviolet, visible, or infrared regions of the electromagnetic spectrum. Photoluminescence may be either a fluorescence or a phosphorescence, or both. Energy can be stored in certain luminescent materials by subjecting them to light or some other exciting agent, and can be released by subsequent illumination of the material with light of certain wavelengths. This type of photoluminescence is called stimulated photoluminescence. See Fluorescence, Luminescence, Phosphorescence How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Photoluminescence are meant to assist building occupants in identifying means of egress during low visibility situations. Raman and photoluminescence peak shift measurements have been made on [Al. Photoluminescence can be used to highlight doorways, hallways, exits, and stairwells, not only when used in signs, but in feature strips for defining a doorway, handrail, or exit route. |
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