{"id":25165,"date":"2024-08-26T16:36:10","date_gmt":"2024-08-26T14:36:10","guid":{"rendered":"https:\/\/www.luminokrom.com\/la-peinture-luminescente-comment-ca-marche\/"},"modified":"2025-02-21T17:27:09","modified_gmt":"2025-02-21T15:27:09","slug":"how-does-luminescent-paint-work","status":"publish","type":"page","link":"https:\/\/www.luminokrom.com\/en\/how-does-luminescent-paint-work\/","title":{"rendered":"How does luminescent paint work?"},"content":{"rendered":"
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\"Cristaux<\/a><\/p>\n<\/div>\n<\/div><\/div><\/div>

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All you need to know about the principle of photoluminescence<\/h2>\n
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LuminoKrom\u00ae glow-in-the dark technology harnesses the natural phenomenon of photoluminescence<\/strong> and the renewable energy of solar brightest radiation.<\/p>\n

This physical process enables photoluminescent paint to recharge indefinitely in daylight or artificial lighting, without tiring.<\/p>\n

Luminescent paint captures and stores ambient light<\/strong> during the day and releases it in the dark in the form of diffused luminosity for ten hours, without consuming electricity or emitting CO2<\/sub>.<\/p>\n

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But how does phosphorescent paint actually work?<\/h3>\n<\/div>\n
About photoluminescent paint<\/a><\/div>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>
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\"Icone<\/a><\/p>\n<\/div>\n<\/div><\/div><\/div>

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Origins<\/a><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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\"Icone<\/a><\/p>\n<\/div>\n<\/div><\/div><\/div>

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Luminescence<\/a><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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\"Icone<\/a><\/p>\n<\/div>\n<\/div><\/div><\/div>

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Photoluminescence<\/a><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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\"Icone<\/a><\/p>\n<\/div>\n<\/div><\/div><\/div>

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LuminoKrom\u00ae paint<\/a><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>

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<\/a>The origin of photoluminescence<\/div>\n

It all starts with marine luminescence<\/h2>\n<\/div>\n<\/div><\/div><\/div><\/div>
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\"76%<\/a><\/p>\n<\/div>\n<\/div><\/div><\/div>

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Luminescence, a natural phenomenon<\/span><\/h3>\n

In the ocean, 76% of animals exploit the phenomenon of luminescence<\/strong>. Many fish have developed photoluminescence capabilities for a variety of reasons, including communication, camouflage, attack or defense. They produce their own green-color bioluminescent light, or harbor bacteria that take on this task themselves. Marine creatures use bioluminescence for orientation, communication, but also to view the environment and make the invisible visible...<\/p>\n<\/div>\n<\/div><\/div>

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From bioluminescence to roadside photoluminescence<\/span><\/h3>\n

Following the example of marine animals, we have exploited the exceptional photoluminescent performance of those pigments in our LuminoKrom\u00ae paint. The aim is to take advantage of the natural luminosity available in glow materials to enhance the safety of night-time travel<\/strong> (pedestrians, cyclists, etc.) in many local authorities and\/or industrial and private sites.<\/p>\n

As soon as night falls, LuminoKrom\u00ae paint begin to bright in the dark, creating a luminous guide<\/strong> for better orientation and visibility.<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>

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 \"\"<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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<\/a>Learn more about luminescence<\/span><\/h2>\n<\/div>\n<\/div><\/div><\/div><\/div>
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The phenomenon of luminescence is an emissive process that in reality encompasses a number of mechanisms, depending on the mode of excitation :<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>

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\"Icone<\/div>\n

Photoluminescence<\/span><\/strong><\/p>\n

Photoluminescence results from quick excitation by photon absorption. It's a phenomenon whereby a material absorbs light and re-emits it after a certain delay. Examples include luminescent green or yellow tubes, fluorescent dyes and interior water-based or exterior phosphorescent paints.<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div>

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\"Icone<\/p>\n

Electroluminescence<\/span><\/strong><\/p>\n

The electroluminescence results from reactive electrical excitation (electric field), used in light-emitting diodes (LEDs), components used, for example, to backlight LED televisions.<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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\"Icone<\/p>\n

Cathodoluminescence<\/span><\/strong><\/p>\n

Cathodoluminescence corresponds to excitation by reactive electron collision. The collision is caused by accelerating electrons using electric fields, for example in cathode ray tubes.<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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\"Icone<\/p>\n

Chimiluminescence <\/span><\/strong><\/p>\n

Chemiluminescence is the phenomenon due to an excitation resulting from a chemical reaction, used for example in glow sticks or produced by the blue diffusion flame of a gas burner or lighter.<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div>

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\"Icone<\/p>\n

Bioluminescence <\/span><\/strong><\/p>\n

Bioluminescence is an enzymatic reaction, used by fireflies and many marine animals in the water. We could take the example of transparent fish with the skeleton that we can view due to different luminous colors : yellow, black, orange or green.<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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\"Icone<\/p>\n

Crystalloluminescence\u00a0<\/span><\/strong><\/p>\n

Crystalloluminescence results from excitation following a crystalline structural modification, creating and\/or breaking chemical bonds in a solid. These are known as mechaluminescence, piezoluminescence and triboluminescence.<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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\"Icone<\/p>\n

Radioluminescence <\/span><\/strong><\/p>\n

Radioluminescence is one of the form of luminescence phenomenon resulting from the excitation of X-ray irradiation or \u03b1, \u03b2, \u03b3 radiation, for example in the case of common X-ray screens. It is the radioactive decay of a body.<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>

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<\/a>Photoluminescence, the absorption of light<\/span><\/h2>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>
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Scientific advances<\/h3>\n<\/div>\n<\/div><\/div>
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1500s - Initial discovery of the phenomenon<\/strong><\/span><\/p>\n

The first record of photoluminescence dates back to 1602, when the Italian alchemist and physician Vincenzo Casciarolo discovered that a certain type of stone, called \"baryte\" (or \"Bologna stone\"), glowed in the dark after being heated. This stone contained barite, a barium sulfate mineral, which emitted a glow after being exposed to light and heated. This phenomenon intrigued scientists of the time, as it seemed to contradict existing knowledge about light.<\/p>\n

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1600s-1700s - The studies and research era<\/span><\/strong><\/p>\n

Photoluminescence has remained a curiosity for several centuries, observed only sporadically. Researchers such as Robert Boyle and Robert Hooke studied various luminescent materials in the 17th century, but scientific understanding of the phenomenon remained limited.<\/p>\n<\/div>\n<\/div><\/div><\/div>

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1800s - Major advances in photoluminescence<\/strong><\/span><\/p>\n

In the 19th century, advances in physics led to a better understanding of light phenomena. Scientists like Sir George Stokes, who discovered the phenomenon of fluorescence in 1852, contributed to the study of photoluminescence. Stokes showed that certain materials could absorb ultraviolet light and re-emit visible light, a behavior that laid the foundations for modern understanding of photoluminescence.<\/p>\n

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\"Although fluorescence and phosphorescence, two forms of photoluminescence, have been observed since the 16th century, it wasn't until the early 20th century that we understood the origin of this curious \"cold\" emission of light.\"<\/em><\/p>\n

Bernard Valeur<\/a> - Pour la science\u00a0- 2011.<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div>

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What causes photoluminescence?<\/h3>\n
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In quantum mechanics, the photoluminescent mechanism involves two different options. The first involves the electronic transition<\/strong> from the ground state to the excited state after absorption of a photon. The second is the return process: the excited state returns to the ground state, spontaneously releasing photons.<\/p>\n

Generally speaking, photoluminescence is an optical phenomenon in which materials absorb luminous source<\/strong> at a certain wavelength and emit visible luminous source at a different wavelength. This process generally occurs when electrons in the atoms or molecules of a material absorb light energy and shift to higher energy levels. When these electrons return to their original energy levels, they emit quick luminosity in the form of photons.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div><\/div>

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\"Photoluminescence<\/a><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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What's the difference between fluorescent paint and phosphorescent paint?<\/h2>\n<\/div>\n<\/div><\/div>
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In fact, the photoluminescent phenomenon combines the two physical processes of fluorescence and phosphorescence.<\/p>\n