= Don Eigler
{c}
{tag=Physicist}
{wiki}
= Donald Eigler
{c}
{synonym}
<Don Eigler> and <Erhard Schweizer> demonstrated controlled positioning of individual <atoms> with a <scanning tunnelling microscope> in 1990. Their apparatus moved adsorbed <xenon> atoms across a <nickel> crystal surface at 4 <kelvin> and assembled designed atomic structures. The low <temperature> limited unwanted atomic motion, while the <scanning tunnelling microscope> supplied both manipulation and subsequent imaging. This connected the ability to observe single <atoms> with the ability to build a chosen arrangement of them.<Positioning single atoms with a scanning tunnelling microscope by Don Eigler and Erhard Schweizer>[Nature 344, 524–526 (1990), abstract]{ref}
\Image[https://commons.wikimedia.org/wiki/Special:Redirect/file/Don%20Eigler%20Neon%20Argon.jpg?width=250]
{title=Portrait of <Don Eigler>}
{description=AlmadenJenny; own photograph (upload history also names Jenny Hunter). https://commons.wikimedia.org/wiki/Template:PD-self[Worldwide public-domain dedication by the copyright holder (PD-self); not a CC license grant.], via Wikimedia Commons.}
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