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Power/Performance Bits: Feb. 4


Infrared nanoantenna Researchers at the University of Würzburg built a nanoantenna capable of generating directed infrared light. The Yagi-Uda antenna is the smallest of its type yet created. "Basically, it works in the same way as its big brothers for radio waves ," said René Kullock, a member of the nano-optics team at Würzburg. An AC voltage is applied that causes electrons in the met... » read more

Power/Performance Bits: Jan. 2


Hydrogen from seawater Engineers at Columbia University are developing an ocean-based photovoltaic-powered electrolysis device that can operate as a stand-alone floating platform to split water into hydrogen fuel and oxygen. State-of-the-art electrolyzers use expensive membranes to maintain separation of the H2 and O2 gases produced by water electrolysis. The new device relies instead on an... » read more