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New Technique Produces 10-Carat Diamond

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WASHINGTON, May 19 -- Researchers at the Carnegie Institution of Washington, D.C., have produced 10-carat, half-inch thick single-crystal diamonds at rapid growth rates (100 micrometers per hour) using a chemical vapor deposition (CVD) process. The size is approximately five times that of commercially available diamonds produced by the standard high-pressure/high-temperature (HPHT) method and other CVD techniques. In addition, the team has made colorless single-crystal diamonds, transparent from the ultraviolet to infrared wavelengths, with their CVD process. This 5-carat diamond was...Read full article

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    Published: May 2005
    Glossary
    chemical vapor deposition
    Chemical vapor deposition is a process of applying dopants to a glass bait by flame reactions of gaseous compounds. See also outside vapor-phase oxidation; inside vapor-phase oxidation.
    Carnegie Institutionchemical vapor depositionCVDhigh-pressure/high-temperatureHPHTNews & Featuressingle-crystal diamonds

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