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Latest Michael Armstrong Stories

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2009-03-17 08:20:00

By reversing a process that converts electrical signals into sounds heard out of a cell phone, researchers may have a new tool to enhance the way computer chips, LEDs and transistors are built. Lawrence Livermore National Laboratory scientists have for the first time converted the highest frequency sounds into light by reversing a process that converts electrical signals to sound. Commonly used piezo-electric speakers, such as those found in a cell phone, operate at low frequencies that...