Tuesday, September 28, 2010

Great Bouncing Balls of Light!

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JamesLsalmon@gmailDOTcom

Researchers at Stanford University have developed a technique for squeezing more energy out of sunlight by utilizing 'roughed up' nano-scale light collectors.

"Visible light has wavelengths around 400 to 700 nanometers (billionths of a meter), but even at that small scale, Fan said, many of the structures that Yu analyzed had a theoretical limit comparable to the conventional limit proven by experiment."

'One of the surprises with this work was discovering just how robust the conventional limit is,' Fan said.
It was only when Yu began investigating the behavior of light inside a material of deep subwavelength-scale – substantially smaller than the wavelength of the light – that it became evident to him that light could be confined for a longer time, increasing energy absorption beyond the conventional limit at the macroscale."


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