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Date: 2009-08-30 04:57:33Chemistry LED lamps Light-emitting diode Signage Energy Nature Semiconductor devices Gallium nitride Solar cell Lighting | http://www.sciencecentric.com/news/article.php?q=ultraAdd to Reading ListSource URL: rogers.matse.illinois.eduDownload Document from Source WebsiteFile Size: 177,31 KBShare Document on Facebook |