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March 23rd, 2008
Light-emitting diodes that give a warm glow to your home or office will be available within a few years, say Swedish researchers working with nanowires.
Professor Lars Samuelson and team at Lund University are aiming to produce devices that do not cast as harsh a light as existing LEDs, and that are more efficient and longer lasting.
"We can really make the three colours - red, green and blue - with this technology and get warm LEDs," says Samuelson, who presented his research at the recent International Conference On Nanoscience and Nanotechnology in Melbourne.
Conventional LEDs are made of multiple crystalline semiconductor layers that emit light when a current passes through them, converting 30% of the electricity they receive into light.
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