Nanocrystals Show a Quick Route to Change

From: Neutron (neutron_p_at_lycos.com)
Date: 11/12/04

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    Date: 12 Nov 2004 17:27:37 GMT

    Just as the Microtechnology Age was built upon the introduction of
    impurities into crystals of semiconductor materials, so, too, will
    crystalline doping be the bedrock upon which the Nanotechnology Age is
    built. To advance the arrival of this next technological era at a
    faster pace, however, scientists need a better understanding of what
    happens to nano-sized crystals under the various forms of doping.
    Researchers with the U.S. Department of Energy's Lawrence Berkeley
    National Laboratory (Berkeley Lab) and the University of California at
    Berkeley have good news for the burgeoning nanotechnology industry.
    They've shown that for nanocrystals, the doping process in which one
    type of positively charged atom, or cation, is exchanged for another,
    take place at a much faster rate than for crystals of extended size,
    and is fully reversible, something that is virtually forbidden in
    micro-sized crystals under the same environmental conditions.

    >>From PhysOrg: http://www.physorg.com/news1945.html

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