Researchers have used zinc oxide microwires to significantly improve the efficiency at which gallium nitride light-emitting diodes (LED) convert electricity to ultraviolet light. The devices are believed to be the first LEDs ...
Nanophysics
Oct 31, 2011
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0
Can skin cancer be treated with light? Scientists at the University of California, Irvine (UC Irvine), believe so. They're exploring new ways to image cancerous lesions using LEDs that might advance a technique for treating ...
Optics & Photonics
Oct 18, 2010
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Chemists at Ludwig-Maximilians-Universitaet (LMU) in Munich have developed a novel type of red phosphor material, which significantly enhances the performance of white-emitting LEDs.
Materials Science
Jun 23, 2014
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(AP) -- Light-emitting diodes, or LEDs, are starting to become cost-effective alternatives to standard light bulbs and fluorescent tubes. That opens up some interesting possibilities, such as the combination LED light and ...
Hi Tech & Innovation
May 12, 2010
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"The best laid plans of mice and men often go awry"—this famous paraphrase of Scottish poet Robert Burns sometimes sums up human ingenuity. That is exactly what happened when a county in Washington State decided to replace ...
Environment
Jul 9, 2021
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27
Get ready for some mandated changes in lighting, warns an energy expert in Penn State's College of Agricultural Sciences.
Energy & Green Tech
Mar 1, 2011
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0
Light-emitting diodes—or LEDs, as they are commonly known—have been slowly replacing incandescent light bulbs in applications ranging from car taillights to indicators on electronics since their invention in the 1960s.
Nanophysics
Nov 21, 2017
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19
Philips is the world's first to present a lamp prototype that produces a record 200 lumen per watt (lm/W) of high quality warm white light. This LED technology breakthrough brings energy-efficient LED light suitable for general ...
Energy & Green Tech
Apr 11, 2013
2
1
(Phys.org) —Long hours of nighttime driving can cause eyestrain because while our vision adapts to the surrounding darkness, the sudden stabs of brightness from streetlamps can be irritating, distracting and even painful. ...
Engineering
Jul 18, 2014
1
0
Most Christmas lights, DVD players, televisions and flashlights have one thing in common: they're made with light emitting diodes (LEDs). LEDs are widely used for a variety of applications and have been a popular, more efficient ...
Nanophysics
Oct 13, 2015
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