Re: [Sci.nanotech] Re: Just thinking crazy I guess :)



"Perry E. Metzger" <perry@xxxxxxxxxxxx> wrote in message
news:1224i58396fia91@xxxxxxxxxxxxxxxxxxxxx
Jim Logajan <JamesL@xxxxxxxxx> writes:
As for this notion of "vacuum" you have in this context, I suggest you
think for a moment about the mean free path of gas molecules at 300K,
and compare that to the size of a buckytube.

I'm not sure what you are trying to suggest here - buckytubes can come in
(I believe) any size radius or length. I suppose at some size level
they'd
be called (and considered) cylindrical graphite sheets - though I don't
know if anyone has defined where that transition point occurs.

I was speaking only of the things commonly called carbon nanotubes
these days. If it is a meter, or even a millimeter, in radius, it is
beyond the scope of what most people call "nanotubes".

At the radii that SWNTs are commonly found and sold in, the macrocopic
phenomena the original poster was mentioning are not relevant. Indeed,
I'm unaware of anyone having constructed a "bucky cylinder" large
enough for macroscopic phenomena to become relevant.

Dear Perry,
That is what I am thinking about,
Building nano products that end up built into larger products
that can do things that regular machining/manufacturing processes
would not be able to create.

I am sorry I did not specify that more clearly originally.

--
James M Driscoll Jr
Spaceman




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