Letter
Playing Pinball with Atoms
Both authors contributed equally to this work.
Abstract

We demonstrate the feasibility of controlling an atomic scale mechanical device by an external electrical signal. On a germanium substrate, a switching motion of pairs of atoms is induced by electrons that are directly injected into the atoms with a scanning tunneling microscope tip. By precisely controlling the tip current and distance we make two atom pairs behave like the flippers of an atomic-sized pinball machine. This atomic scale mechanical device exhibits six different configurations.
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History
- Published In Issue May 13, 2009
- Article ASAPSeptember 10, 2008
- Received: July 29, 2008
Revised: August 28, 2008
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