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Electroforming Carbon Nanofibers

04/23/2009 7:31 AM

Anyone have knowledge or links to WWW with regards to creating sheets of Carbon nanofibers please?

The method used is to be either Chemical Vapour Deposition and/or Electroforming.

Not sure if it is possible through either technique as a search on Google didn't reveal much for me.

Maybe I was looking in the wrong spots, so I figured I ask you people for direction.

Cheers and thanks

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#1

Re: Electroforming Carbon Nanofibers

04/23/2009 8:31 AM

Until a chemist gets here I'll try to help;

Are you looking for methods for carbon fiber or carbon nanotubes?

I believe the products and processes are fundamentally different - and given the materials are the rage everywhere, perhaps your poor search results are due to mixing the two terms?

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#2
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Re: Electroforming Carbon Nanofibers

04/23/2009 8:47 AM

It's possible. I have used Boolean search queries to reduce junk and come up with mostly secretive and vague descriptions and decided to exclude the term "patent" after heaps of junk and spurious ideas and methods.

Still on a search for that elusive nanofibre/nanofibers. I have used both "nanotubes" and "nanofibers" with not much in return, which is why I asked here...maybe that this is still a fledgling industry with many people seeing $$$ and hence not saying much and throwing a patent at everything.

I did find a reference to chucking the polymorph graphite into a microwave to create a structured sheet...but I don't think the missus will like that one

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#3

Re: Electroforming Carbon Nanofibers

04/23/2009 9:43 AM

In confirmation of your opinion, I was watching Modern Marvels on the box discussing carbon fiber uses, and the thing they discussed in only the most general terms was how you develop sheets of the stuff.

Had to do with starting with sheets of something else (what I get for not paying attention) and burning it down sequentially until nothing was left but carbon.

Not much help I am afraid.

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#4

Re: Electroforming Carbon Nanofibers

04/23/2009 4:05 PM

I have never heard of sheets of carbon nanofibers, although I have heard of fibers being made from carbon nanotubes/spheres/buckyballs, etc.

Research in carbon nanotubes is still quite in its infancy, so I wouldn't expect to see it commercially available yet.

If you're looking for carbonized polyester fabric, then it's available commercially and used in loads of applications from fishing rods to stealth fighters.

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#6
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Re: Electroforming Carbon Nanofibers

04/23/2009 10:30 PM

thanks, it is my limited belief that nanotubes are made in singular layers to form multiple sheets termed (correctly or not) nanofibers. I am beginning to feel that the lack of concrete information may prove you to be correct, that this field is still in its infancy. Have seen some references to carbon fiber sheets, even for sale on Ebay

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#5

Re: Electroforming Carbon Nanofibers

04/23/2009 8:14 PM

Try using "CNT" in your searches for carbon nanotubes:

for example: CNT sheet deposition:

I get more than a million hits for "CNT fiber" and maybe what you're looking for is found by searches like "CNT fiber sheet formation"

Very interesting topic. I ran across this stuff researching conductive paints, fibers, textiles. I'll be curious to know how you rate the supply - and the price - for the raw material. Let us know how the process works out.

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#7
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Re: Electroforming Carbon Nanofibers

04/23/2009 10:39 PM

The area I am looking into, is possibly a passing fad for me...and someone has touched on what I am kind of looking into. Firefly have created a carbon graphite foam grid LINK which is similar in principle and purpose to what I am looking into.

I will try those search options and see how I go...thanks for that

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#8
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Re: Electroforming Carbon Nanofibers

04/24/2009 8:21 AM

I frequently find I could find more out if I only knew what I was asking for. As an aside, I miss the days when Webcrawler displayed output in a hierarchy.

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#9
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Re: Electroforming Carbon Nanofibers

04/24/2009 10:38 AM

yeh... you wouldn't believe the hard times I've had due to not having the right search terms. It's like standing right next to something but you can't find it because you can't name it.

Doesn't take long for lingo to develop either: "CNT" indeed!!

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#10
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Re: Electroforming Carbon Nanofibers

04/24/2009 10:48 AM

Yeah, and I have to admit Google's "suggestions" are making me have to think less daily

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#11

Re: Electroforming Carbon Nanofibers

04/24/2009 1:23 PM

Check out this company, which is making large sheets of carbon nanotube-based cloth:

http://nextbigfuture.com/2008/02/large-sheets-of-carbon-nanotube.html

This cloth weighs 0.1g/sq meter !!!

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#12
In reply to #11

Re: Electroforming Carbon Nanofibers

04/26/2009 5:24 PM

yeah, saw that one...was pretty awesome job!

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