Manufacturing Industry
Carbon nanotubes form along atomic steps on sapphire wafers.(MATERIALS SCIENCE/R & D)
Advanced Materials & Processes, May, 2005
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Patterns of carbon nanotubes that are formed along atomic steps on sapphire surfaces have reportedly been observed by researchers at the Weizmann Institute of Science, Israel. Carbon nanotubes are excellent candidates for the production of nanoelectronic circuits, but their assembly into ordered arrays remains a major obstacle toward this application.
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The nanotubes form in the presence of a catalyst of iron nanoparticles, and are attracted to a local field created by the steps that develop in sapphire wafers produced by commercial processes. It is clear that these iron particles ...
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