Process for repositioning atoms on a surface using a scanning tu

Details Process for repositioning atoms on a surface using a scanning tu Process for repositioning atoms on a surface using a scanning tu

1989-11-07

1991-01-22

Berman, Jack I.

Radiant energy

Irradiation of objects or material

Ion or electron beam irradiation

2504922, 369101, 369126, H01J 3730

Patent

active

049873121

ABSTRACT:
A method is disclosed for repositioning an adsorbate atom or molecule on a substrate surface by moving the tip of a STM to a position adjacent the atom to be moved and subsequently increasing the attraction between the tip and atom by moving the tip closer to the substrate, and then, while the atom remains bound to the surface, moving the tip laterally to drag the atom to a desired position on the surface. The tip is then moved away from the substrate, reducing the attraction between the atom and tip and leaving the atom bound at the desired position.
The atom may be repositioned in close proximity to an atom of the same or another type on the same or a different substrate to create a desired multi-atom structure or synthesize a molecule.
Atoms may also be repositioned to write indicia on a storage medium by dragging atoms into the desired information bearing pattern, for example, by dragging selected atoms out of a respective one of a plurality of parallel atom rows using the tip of a STM to thereby write indicia at locations denoted by the removed atoms.

REFERENCES:
patent: 4575822 (1986-03-01), Quate
patent: 4826732 (1989-05-01), Kazan et al.
Gomer, IBM Journal of Research and Development, vol. 30, No. 4, Jul. 1986, pp. 428-430.

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