David Kirkpatrick

May 25, 2010

A seven atom transistor

Via KurzweilAI.net — We are heading toward the terminus of physical computing components. Can’t get a whole lot smaller than seven atoms.

Quantum leap: World’s smallest transistor built with just 7 atoms
PhysOrg.com, May 24, 2010

The world’s smallest precision-built transistor — aquantum dot of just seven phosphorus atoms in a single silicon crystal — has been created by scientists from the UNSW Centre for Quantum Computer Technology and the University of Wisconsin-Madison.

At present, the length of a commercial transistor gate is about 40 nanometers (billionths of a metet). The new device has features about 10 times smaller at 4 nanometers.

Template of the quantum dot device showing a central hole where seven phosphorus atoms are incorporated
Read Original Article>>

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