MilestoneHardwareConfirmed

UNSW builds a transistor from one phosphorus atom placed in silicon

Feb 19, 2012

Michelle Simmons's group at UNSW in Australia reports in Nature Nanotechnology a transistor made of a single phosphorus atom, placed in silicon with a scanning tunneling microscope to an accuracy of one lattice site. It works at liquid-helium temperatures.

Why it matters

Spin-based quantum computers in silicon, such as Kane's 1998 design, need individual atoms placed with this kind of precision.

Martin Fuechsle · Michelle Simmons · UNSW Sydney

See it on the timeline

Related

Added Oct 27, 2026. Spotted an error? Tell us and we will review it.