The University of Georgia Research Foundation, Inc. (UGARF) and the University of Puerto Rico have granted an international, non-exclusive license for a portfolio of glow-in-the-dark pigments that can be designed to emit light in any color of the visible spectrum for nearly a day. Performance Indicator, LLC, of Lowell, Mass., acquired the license.
Phosphorescence is a process in which energy absorbed by a substance is released relatively slowly in the form of light. Some materials release energy over long periods of time and are known as long-persistence phosphors. But scientists have puzzled over how to produce long-persistent phosphors that glow blue and green, red or other long-wavelength colors, or white.
By exploiting the phenomenon of energy transfer, the UGARF/UPR technology can produce long-lasting glow in any color, including blue, green or red, and in tints and hues, such as pink red with white without extensive modification to the composition of the materials.
The seven phosphors included in this patent portfolio are simple to manufacture and environmentally safe. They do not contain sulfur, radioactive materials, lead or other materials. They can be used in a multitude of consumer and industrial applications, including signage, special paints, and in combination with polymers for the manufacture of many items, such as color-coded electric wiring, insulation, textiles, novelty-items and printing ink.
The license to Performance Indicator allows it to adapt, patent, and market color-change or indicator technologies for a variety of industrial and consumer applications, and to import, manufacture and sell the phosphors. Also licensed under the same agreement are methods to customize the wavelength of emitted light, white-emitting phosphors, methods to render hues and tints to emitted light and methods to blend such phosphors with a multitude of materials, such as polymers and resins.
|Contact: Terry Hastings|
University of Georgia