Just as radio antennas amplify the RF signals of our mobile phones and televisions, the same principle can apply to light. For the first time, researchers from Centre national de la recherche scientifique (CNRS) and Aix Marseille Université have succeeded in producing a nanoantenna from short strands of DNA, two gold nanoparticles and a small ...
Two researchers have reprised in the journal Energy Policy their groundbreaking finding that improvements in lighting—from candles to gas lamps to electric bulbs—historically have led to increased light consumption rather than lower overall energy use by society. In a 2010 article in the Journal of Physics, Sandia researcher Jeff Tsao and ...
The Alliance for Solid-State Illumination Systems and Technologies (ASSIST) recently released a new publication that addresses the issue of LED light source flicker. The publication, ASSIST recommends… Flicker parameters for reducing stroboscopic effects from solid-state lighting systems, provides calculation methods for estimating the ...
The National Electrical Manufacturers Association (NEMA) has issued a clarification on the effects of ultraviolet (UV) and infrared radiation from compact fluorescent lamps (CFLs). CFLs are small, energy-efficient fluorescent light bulbs with long life designed to replace traditional incandescent bulbs. CFLs are designed to emit most of their ...
A 2012 study from the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute shows that a 2-hour exposure to electronic devices with self-luminous, backlit, displays causes melatonin suppression, which might lead to delayed bedtimes, especially in teens. The research team, led by Mariana Figueiro, associate professor at Rensselaer ...
University of Utah physicists invented a new “spintronic” organic light-emitting diode, or OLED, that promises to be brighter, cheaper and more environmentally friendly than the kinds of LEDs now used in television and computer displays, lighting, traffic lights and numerous electronic devices. “It’s a completely different ...
Imagine a white luminous curtain waving in the breeze. Or wallpaper that lights up your room with perfect white light. In his Linköping University doctoral thesis, Gul Amin shows how white LEDs can be manufactured directly on paper. Gul Amin, who recently received his doctorate at the Physical Electronics and Nanotechnology group, Norrköping ...
Inspired by a European study, a team of Stony Brook University researchers looked into the potential impact of healthy human skin tissue (in vitro) being exposed to ultraviolet rays emitted from compact fluorescent light (CFL) bulbs. The results, “The Effects of UV Emission from CFL Exposure on Human Dermal Fibroblasts and Keratinocytes in Vitro...
Drivers can struggle to see when driving at night in a rainstorm or snowstorm. But a smart headlight system invented by researchers at Carnegie Mellon University's Robotics Institute can improve visibility by constantly redirecting light to shine between particles of precipitation. The system, demonstrated in laboratory tests, prevents the ...
UCLA researchers have developed a new transparent solar cell that is an advance toward giving windows in homes and other buildings the ability to generate electricity while still allowing people to see outside. Their study appears in the journal ACS Nano. The UCLA team describes a new kind of polymer solar cell (PSC) that produces energy by ...