Philips LED bulb with rad design set for January arrival
Breakthrough research produces brighter, more efficiently produced lighting
By determining simple guidelines, researchers at UC Santa Barbara's Solid State Lighting & Energy Center (SSLEC) have made it possible to optimize phosphors –– a key component in white LED lighting –– ...
Shanghai prof claims Li-Fi advance, prepares show kits
Optical wireless may be the answer to dropped calls, and more
Anyone who has tried to make a cell phone call from a crowded football stadium has had a taste of what engineers call spectrum crunch.
Wagon-wheel pasta shape for better LED: 'Rotelle' molecules depolarize light more efficiently than 'spaghetti'
One problem in developing more efficient organic LED light bulbs and displays for TVs and phones is that much of the light is polarized in one direction and thus trapped within the light-emitting diode, or ...
Toward a truly white organic LED: Physicists develop polymer with tunable colors
By inserting platinum atoms into an organic semiconductor, University of Utah physicists were able to "tune" the plastic-like polymer to emit light of different colors – a step toward more efficient, less ...
New kind of ultraviolet LED could lead to portable, low-cost devices
Commercial uses for ultraviolet (UV) light are growing, and now a new kind of LED under development at The Ohio State University could lead to more portable and low-cost uses of the technology.
The robot and its virtual twin (w/ Video)
It walks, falls, and gets up on his own, follows a ball by sight and shoots. It also knows how to do many other things. The small humanoid robot DARwIn-OP was developed by a Korean company and three U.S. universities to serve ...
Researchers identify cause of LED 'efficiency droop'
(Phys.org) —Rensselaer Polytechnic Institute researchers have identified the mechanism behind a plague of LED light bulbs: a flaw called "efficiency droop" that causes LEDs to lose up to 20 percent of their ...
Two in one solution for low cost polymer LEDs and solar cells
UNIST researchers report considerable improvement in device performance of polymer-based optoelectronic devices. Published in Nature Photonics today, the new plasmonic material, can be applied to both polymer light-emitting diodes ...
Student's flashlight works by body heat, not batteries
Powerful gallium nitride red light-emitting diodes made with europium and magnesium codoping
(Phys.org) —Toyohashi Tech researchers fabricate powerful red light-emitting diodes by codoping GaN with Eu and Mg. The details are described in the June 2013 issue of Toyohashi Tech e-Newsletter: http://www.tut.ac.jp/english/newsletter/index.html
Silicon-based nanoparticles could make LEDs cheaper, greener to produce
(Phys.org) —Light-emitting diodes, or LEDs, are the most efficient and environmentally friendly light bulbs on the market. But they come at a higher up-front price than other bulbs, especially the ones ...
New family of tiny crystals glow bright in LED lights
(Phys.org) —Minuscule crystals that glow different colors may be the missing ingredient for white LED lighting that illuminates homes and offices as effectively as natural sunlight.