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Light Pulses Quickly Drive Electronic Currents Through Graphene

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Physicists have used a laser to control an electronic current through graphene within one femtosecond. According to the research team this speed could be more than a thousand times faster than the speed of current transistors. While it’s possible to use light waves to direct electrons through semiconductors and insulating materials, according to researchers this approach has not yet been used to direct electrons — and thus control currents — through metals, because light cannot penetrate the material to reach the electrons inside. To move electrons through metal,...Read full article

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