By placing quantum dots on a specially designed photonic crystal, researchers at the University of Illinois have shown that strengthening the fluorescence intensity by a factor of 108. Potential applications include light-emitting diodes, high-gloss, optical switches and personalized high-sensitivity bio sensors.

Researchers are using photonic crystals in a new way. The tune to the specific wavelength of a laser that stimulates quantum dots, allowing you to use energy more efficiently and increase the brightness. (more…)
Archive for December, 2008
Wednesday, December 10th, 2008
Monday, December 1st, 2008
Scientists who have calculated the amount of carbon that accumulates annually in the upper forests of the Midwest, they hope their findings will serve to accelerate the global debate on the strategy of managing forests to neutralize the emissions of greenhouse gases.

In an era in which there are differences on the exploitable land use, the researchers argue that forests help stabilize the climate and are abundant sources of other essential products and services, for example, purified air, fertile soils, and water purified. To quantify the amount of carbon that forests can remove from the atmosphere is a way to show the value of forest areas for policy decision makers on the energy sector. (more…)