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How to make a "perfect" solar absorber

The key to creating a material that would be ideal for converting solar energy to heat is tuning the material's spectrum of absorption just right: It should absorb virtually all wavelengths of light that reach Earth's surface ...

dateSep 29, 2014 in Nanomaterials
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Sao Paulo drought issue for global concern

He cast his rod happily here for 30 years—but where a river once teemed with fish, Brazilian fisherman Ernane da Silva these days stares out over a valley of weeds and bone dry, sun-parched land.

dateNov 26, 2014 in Environment
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Growing thin films of germanium

Researchers have developed a new technique to produce thin films of germanium crystals—key components for next-generation electronic devices such as advanced large-scale integrated circuits and flexible electronics, which ...

dateSep 06, 2013 in Condensed Matter
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