TU Vienna has managed to turn the oscillation direction of beams of light – simply by applying an electrical current to a special material. This way, a transistor can be built that functions with light instead of electrical ...
General Physics
Jul 8, 2013
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UV lamps are used to cure coatings and adhesives in many industrial manufacturing processes. And special sensors are used to measure the intensity of the UV light applied to these surfaces. But because these sensors age too ...
Engineering
Apr 29, 2013
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(Phys.org)—Researchers at Japan's National Institute of Advanced Industrial Science and Technology, (AIRT) have developed an organic material that can be liquefied or hardened by shining different types of light on it. ...
Recycling, reusing and reducing are all ways in which Europeans are assisting in efforts to reduce greenhouse gas (GHG) emissions. It is a far cry from the days when we threw everything away without thought. Now we know it ...
Energy & Green Tech
Jan 7, 2013
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Today's light-emitting diode light bulbs have a slight environmental edge over compact fluorescent lamps. And that gap is expected to grow significantly as technology and manufacturing methods improve in the next five years, ...
Energy & Green Tech
Sep 5, 2012
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In a leap forward for laser technology, a team at University of California, Santa Barbara, has developed the first violet nonpolar vertical-cavity surface-emitting lasers (VCSELs) based on m-plane gallium nitride semiconductors.
Optics & Photonics
Jul 23, 2012
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WASHINGTON, April 30--Like a coffee enthusiast who struggles to get a buzz from that third cup of morning joe, light-emitting diodes (LEDs) seem to reach a point where more electricity no longer imparts the same kick and ...
Engineering
Apr 30, 2012
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Detailed studies of one of the best-performing organic photovoltaic materials reveal an unusual bilayer lamellar structure that may help explain the material's superior performance at converting sunlight to electricity and ...
Materials Science
Apr 24, 2012
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(PhysOrg.com) -- Silicon substrate LED's are cool, but you won't find them in your TV, or in the headlights of your car. They simply do not throw off enough light to be used in commercial applications. Or, at least they did ...
The importance of artificial light to society has long been recognized with the utilization of fire thought of as the quintessential human invention. Now scientists have found that emerging, more energy efficient lighting ...
Energy & Green Tech
Aug 19, 2010
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