Manufacturing Industry
Hollow gold clusters may make cages for atoms.(EMERGING TECHNOLOGY)
Advanced Materials & Processes, August, 2006
A class of gold atom clusters that are the first known metallic hollow equivalents of the famous hollow carbon fullerenes known as bucky-balls have been reported by the Department of Energy's Pacific Northwest National Laboratory, Richland, Wash. Carbon fullerenes are made up of a sphere of 60 carbon atoms, but gold requires only 16,17, and 18 atoms, in triangular configurations.
At more than six angstroms across, they are large enough to cage a smaller atom. [ILLUSTRATION OMITTED] "This is the first time that a hollow cage made of metal has been experimentally proved," says PNNL's Lai-Sheng Wang. The materials are stable at room temperature and are known as "free-standing" cages--unattached to a surface or any other body, in a vacuum. When deposited on a...
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