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Home > News > Nanocrystals Show a Quick Route to Change

November 11th, 2004

Nanocrystals Show a Quick Route to Change

Abstract:
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.

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