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Diamond Anvils Used to View Oxide Glass Structures Under Pressure
Clipped to the Drawing Board by jackson Browne  

Researchers at the U.S. Department of Energy's Argonne National Laboratory have used a uniquely-constructed perforated diamond cell to investigate oxide glass structures at high pressures in unprecedented detail.

Argonne physicist Chris Benmore and postdoctoral appointee Qiang Mei, along with colleagues at the University of Arizona, used microscopic laser-perforated diamond anvil cells to generate pressures of up to 32 gigapascals (GPa) -- roughly one-tenth the pressure at the center of the Earth. By "squashing" vitreous (glassy) arsenic oxide samples between the anvils, the researchers were able to determine the mechanism behind the structure's atypical behavior under high-pressure.

The diamond-anvil cell is a simple device capable of generating pressures almost as great as those found on the centre of the Earth. By applying these pressures to small samples we can then study how materials behave under high presures by a variety of techniques.
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Powered by JoomlaCommentCopyright (C) 2006 Frantisek Hliva. All rights reserved.Homepage: http://cavo.co.nr/
Thursday 15 November, 2007 04:07 AM
 
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