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- BUSINESS, Page 49Business NotesTECHNOLOGYBig Blue's Tiniest Logo
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- They are among the most famous initials in the world, found
- almost anywhere computers are used. But last week the letters
- IBM appeared in the pages of the British science journal Nature
- in an unprecedented form. Two IBM researchers, in a scientific
- and marketing tour de force, had spelled out their corporate
- emblem by dragging atoms across a crystal of nickel one at a
- time. The result: the world's smallest corporate logo,
- measuring 660 billionths of an inch long.
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- It was a remarkable demonstration of the precision with
- which single atoms can now be manipulated, a skill that could
- conceivably be used someday to build atom-size transistors or
- to custom-design molecules. Using an instrument called a
- scanning tunneling microscope and working on a surface chilled
- to near absolute zero, researchers Donald Eigler and Erhard
- Schweizer were able to get individual atoms to respond to the
- magnet-like tug of a fine tungsten needle. But don't expect to
- see atom-etching booths at your local science fair. It took 22
- hours to haul 35 xenon atoms across the bumpy nickel surface.
- And when the temperature rose above -380 degrees F, the
- masterpiece flew apart.
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