Is computer science a science or engineering?
9 hours ago
On September 28, 1989, IBM researcher Don Eigler moved a xenon atom back and forth between two defect sites on a platinum surface. In his lab notebook of that date, under the heading of “first atom to be manipulated under control”, Eigler wrote “Did it,” “Did it” and “Did it again! 3 in a row. On February 14, 1990, Eigler used a different method to manipulate single atoms: instead of dragging the xenon atoms across the substrate, he lifted them up off the nickel surface and then put them back down in their new locations. The lab notebook for that day records “success at pick up” and “success at put down” six times each — no doubt about reproducibility here — followed by “I'm really having fun!!” in big bold writing. Finally, in possibly the most famous image in the history of nanotechnology, Eigler wrote the letters IBM with 35 xenon atoms on a nickel surface.