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08-14-2009, 11:08 AM
Researchers have for the first time shown that nanotubes can grow without a metal catalyst. The researchers demonstrate that zirconium oxide, the same compound found in cubic zirconia "fake diamonds," can also grow nanotubes, but without the unwanted side effects of metal.
More... (http://www.sciencedaily.com/releases/2009/08/090810162117.htm)
More... (http://www.sciencedaily.com/releases/2009/08/090810162117.htm)