|
The technique is designed to overcome the prohibitive costs ofcurrent LED manufacture by building the diodes on low cost siliconwafers, instead of sapphire.
LEDs are claimed to be four times more efficient than conventionalincandescent lights, more environmentally friendly than compactfluorescent lights, and can have a lifespan of up to 15 years.
Purdue University researchers who developed the technique, claimthis new LED technology could cut electricity consumption by 10 percent.
Incandescent bulbs convert only 10 per cent of electricity intolight, and the rest into heat, but by comparison, LEDs are designedto emit white light operate at efficiencies ranging from 47 to 64per cent, but at present cost some 20 times more than conventionalincandescent and compact fluorescent light bulbs.
Currently LEDs built on sapphire comprise a light-emitting materialcalled gallium nitride but this new technique uses silicon wafersthat are coated in a reflective metallic layer of zirconiumnitride.
Page: [1] 2 | Next Page Á´½Ó:http://www.merid.org/NDN/more.php?id=1453 ±êÌâ:Producing Hydrogen Using Water, Solar Energy and Nanotube Diodes ÕýÎÄ:
NDN Home
Subscribe
Manage Subscription
Search News Archives
NaturalNano Confirms Use of Naturally Occurring Nano Materials -- CNNMoney.com (7/21/2008) U.S. company NaturalNano, Inc. has confirmed that its products aremade with naturally-occurring, non-toxic halloysite nanotubes thathave historically been used in such consumer products as foodpackaging, cosmetics, and toothpaste. [More]
Ceres Nanosciences to Develop Nanotechnology Products for HealthCare, Industry and Government Applications -- Nanowerk (7/21/2008) A collaboration of national and international scientists, industry,and academic and government research facilities have established aU.S.-based biotechnology company called Ceres Nanosciences, LLLPwhich will develop nanotechnology-based products to meet healthcare, industrial, and governmental needs. [More]
SDSU Researches DDGS Zein Protein In Cancer Drug -- Ethanol Producer Magazine (7/20/2008) Researchers from South Dakota State University (SDSU) in the U.S.report that zein, a corn protein that is a byproduct of ethanolproduction, could potentially be used in nanoparticle form todeliver cancer drugs directly to cancer cells without affectinghealthy cells. [More]
Treating Eye Diseases Using Nanotechnology -- AZoNano.com (7/20/2008) Researchers from North Dakota State University in the U.S. areresearching a cerium oxide nanoparticle called nanoceria that couldpotentially be used as a drug delivery vehicle to treat eyediseases such as glaucoma and macular degeneration. [More]
More News...
Learn how to include these headlines on your own website byclicking here .
Please email Leili Fatehi if you require text-only versions of the daily emails.
| 
