Laser bursts generate electricity faster than any other method -- "Nanoscale electronic circuits that operate in a femtosecond time scale. The lasers shake the nanojunction so hard that it completely changes its properties. This implies that we can use light to tune the behavior of matter."

submitted by magnora7 from rochester.edu

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Further, the direction and magnitude of the current can be controlled simply by varying the shape of the laser — by changing its phase.