Have you ever wondered why your computer and other electronic devices sometimes perform quickly and other times slowly? It all boils down to the speed at which electrons, the smallest particles in our microcosm, flow out from the tiny leads within the transistors of electronic microchips and create
pulses. Developing methods to increase this speed is crucial for pushing electronics and their applications to their maximum performance potential.
of Solid State Research in Stuttgart used state-of-the-art laser pulses to eject electrons from a tungsten nanotip and to generate the shortest electron burst to date. The findings were recently published in the journalWhereas it has long been known that light can release electrons from metals—Einstein was the first to explain how—the process is extremely hard to manipulate.
But the challenge could not be overcome unless the scientists also found a way to measure the brevity of these electron bursts. To deal with this hurdle, the team developed a new type of camera that can take snapshots of the electrons during the short time the laser is pushing them out from the nanotip and into the vacuum.
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