Joined: 03 Oct 2005 |Posted: Tue Dec 20, 2005 10:18 am Post
subject: Semiconductor Nanocrystals: Alternative to Toxic
Compounds? |Scientists at the University of Arkansas Develop
Semiconductor Nanocrystals as an Alternative to Toxic Compounds
University of Arkansas researchers have used a technique known
as "doping" to create semiconducting nanocrystals using zinc,
opening up a new, non-toxic alternative to the current industry
"workhorse," cadmium selenide. This technique creates a
nanocrystal product that does not contain the carcinogenic
cadmium element, and can be used for biomedical labeling, light
emitting diodes, lasers and sensors. Xiaogang Peng, Scharlau
Professor of chemistry and biochemistry, Narayan Pradhan,
postdoctoral associate, graduate student Jason Thessing all from
the J. William Fulbright College of Arts and Sciences and
research scientist David Goorsey of NN-Labs, a start-up company
at the university's technology incubator, report their findings
in the current issue of the Journal of the