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First optical rectenna -- combined rectifier and antenna -- converts light to DC current -- ScienceDaily

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From flickr.com/photos/37176760@N06/4262998280/: Converting light to a DC current.
Converting light to a DC current.
(Image by jronaldlee)
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Based on multiwall carbon nanotubes and tiny rectifiers fabricated onto them, the optical rectennas could provide a new technology for photodetectors that would operate without the need for cooling, energy harvesters that would convert waste heat to electricity -- and ultimately for a new way to efficiently capture solar energy.

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