Re: The grey goo draws closer

From: Dani Eder (
Date: Tue Jun 28 2005 - 07:06:04 MDT

Check out this story on rapid CVD growth of single
crystal diamond:

The ultimate structural material would be carbon
nanotube reinforced diamond. Carbon nanotubes are
strong in tension, but floppy. Diamond is strong
in compression, but brittle. Combining them into
a composite structural material like concrete, where
steel reinforcing provides the tensile strength
and stone the compressive strength, would provide
a versatile product. It would be roughly 1000x
stronger than concrete. If it can be produced for
less than 1000x the cost, it would have wide use.

Finished concrete costs about $0.06 a pound, so
nanotube/diamond structures would need to be less
than $60/lb to compete at current costs.


Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around

This archive was generated by hypermail 2.1.5 : Wed Jul 17 2013 - 04:00:51 MDT