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No shadows and mirrors -- a Nanocomp employee poses next to a 3x6 ft sample mesh composed of randomly overlapping millimeter long carbon nanotubes.  (Source: Nanocomp Technologies)

The birthplace of the nanotube sheets is Nanocomp's high-tech tube-processing "Big Box", which can churn out a full-sized sheet per day.  (Source: Nanocomp Technologies)
Company makes 3x6 ft carbon nanotube sheets, 100 sq. ft. sheets by the end of the summer; possible uses include consumer electronics, aircraft, and spacecraft

Carbon nanotubes are like a materials scientists' dream come true -- superior heat and electrical conduction, high strength to weight ratio, and flame resistance orders of magnitude higher than many commonly used materials. 

However, in the past, while these tiny tube-molecules composed carbon atoms were raved about by researchers, plans for practical applications remained largely in the realm of fantasy.  The chief problem was the "nano" part of the nanotubes -- these tiny tubes would need to be scaled to visible-sized pieces of material in order to be utilized in many practical devices.  Such scaling  had enjoyed little previous success, and was seen as a major roadblock to putting the ubiquitous nanotubes to work.

Now a breakthrough from Nanocomp Technologies, a New Hampshire startup, promises to provide sheets composed of carbon nanotubes on an unprecedented scale.  Using nanotubes measuring in the tens of nanometers, Nanocomp produces sheets of carbon nanotubes measuring 3 by 6 feet.  Better yet, by the end of the summer the company is promising slabs of 100 square feet or more.

Nanocomp says that the days of waiting for nanotubes materials to be manufactured on a usable scale are over.  The company is taking production seriously, and is not looking to remain in the realm of pure research.  Says CEO and co-founder of Nanocomp, Peter Antoinette, "From the get-go, we wanted to build something that would be manufacturable.  We’re out to make value-added components out of that material."

The hardest part about making nanotube materials is growing long enough tubes.  Nanocomp makes a powder of tubes that are approximately 1 mm, a relatively long length.  In a highly secretive process Nanocomp takes a carbon source such as ethanol or methanol, heats it and flows it past a nanoparticle catalyst, which experts speculate to possibly be an oxide of nickel, cobalt or iron.  The carbon molecules react with the catalyst, powered by the heat, forming a nanotube.  The size of the catalyst correlates to the size of the nanotube formed.

The big hurdle was maintaining a large enough catalyst, keeping it stable enough for millimeter long tubes to grow.  Antoinette says that in order to achieve this, Nanocomp uses an advanced computer controlling 30 different parameters in the process, including temperature, temperature gradient, gas flow rates, and the chemical composition of the mix.  Using this precision control, researchers can both control the desired tube length and select from single-walled or multi-walled tubes.  Mr. Antoinette states, "We can dial it in."

The resulting nanotubes are arranged randomly overlapping into the large final sheets.  To give an idea of the sheet's strength, it has a tensile strength of 200 to 500 megapascals -- aluminum has a strength of approximately 500 megapascals.  Better yet, if Nanocomp moves from a random alignment to an organized alignment, the nanotube material could have a tensile strength as high as 1,200 megapascals. 

Antoinette comments that Nanocomp is heavily marketing the material to consumer electronics manufacturers and is receiving substantial interest.   In cell phone handsets, the material could help to provide protection against stray signals, thanks to its superior shielding against electromagnetic interference (EMI).  This could yield clearer sound and reception.  Also under consideration is the the use of the material in PDAs and laptops.  The material would provide such portable electronics with both heat dissipation from their chipsets and processors and EMI shielding from unwanted signals, via its randomly aligned nanotubes.  Better yet, smaller strips of aligned nanotubes could act as powerful antennas, grabbing wireless signals for superior network reception and transmission.

Nanocomp wants to eventually use the material in composites similar to the carbon-composite used to build the new Boeing 787 jets.  Current composites can't conduct electricity making them vulnerable to lightning strikes.  Nanotube composites could safely channel strikes to harmless locations, protecting the aircraft's electronics.  As an added benefit, current could be run through the nanotubes to heat up the aircraft body, and provide additional de-icing capabilities.

Antoinette points out that most of aerospace industry still uses pure copper wire for its conductors -- virtually the same copper wire used since the 1850s.  His company's nanotubes could replace this material with better conducting nanotubes, which weigh a mere 20 percent as a much as the copper wiring per volume.  Antoinette adds, "Copper wire is still the conductor of all our satellites, all our aircraft."

He points out that a current 747 jet has two tons of copper wire aboard -- a weight cost that could be cut in half by the use of nanotubes.  He says, "you’re talking literally millions of dollars of savings in fuel costs over the life of an airplane."

Boeing, Lockheed Martin, and Northrop Grumman are, needless to say, very excited about the potential for the new large scale material.  They have already qualified Nanocomp as a vendor and are currently receiving and testing samples of the material from Nanocomp.  In hopes of meeting these and other industry leaders demands, after the 100 sq. ft. samples are complete, Nanocomp plans on focusing its efforts on having a pilot-plant running by 2010, with full scale production by 2012.

David Lashmore, Nanocomp co-founder and Chief Technology Officer, pioneered the material assembly process.  The other co-founder was Robert Dean, a former engineering professor at Dartmouth who started Synergy Innovations, a high-tech incubator in Lebanon, NH.  The pair joined with Antoinette to start up the exciting new firm.  They've received  a $2.5M USD contract from the U.S. Army and a Small Business Innovation Research grant from the Air Force.  They are currently raising additional private financing.  To protect itself legally, Nanocomp has signed a non-exclusive license with IBM for IBM's single-wall nanotube process.  With 16 of its own patents, Nanocomp looks to safeguard its own prospects as well.


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?
By fic2 on 3/3/2008 1:13:17 PM , Rating: 2
quote:
Current composites can't conduct electricity making them vulnerable to lightning strikes.


This seems incorrect - I would think that if composites can't conduct electricity it would make them less vulnerable to lightning strikes. Maybe a skin effect? or an incorrect sentence?

But then again I am just a software guy so what do I know.




RE: ?
By TomZ on 3/3/2008 1:23:06 PM , Rating: 6
Non-conductive surfaces are more susceptable to lightning because they don't conduct away stray ions. Stray ion buildup (static electricity) attracts lighting.

That's why TV antennas, for example, are grounded - to dissipate static charge buildup. They are not primarily grounded in order to route a lightning strike to ground, as many people think. They are grounded to prevent a lightning strike.


RE: ?
By fic2 on 3/3/2008 1:25:39 PM , Rating: 2
Thanks for the explaination. The static electricity buildup thing makes sense.


RE: ?
By kkwst2 on 3/3/2008 1:58:10 PM , Rating: 2
I'm not sure this is really the major consideration. I think the main problem is where the electricity goes instead. Possibilities include electronics, fuel tanks, etc. You would like it to conduct through the body of the plane away from vulnerable equipment, etc. Also a discharge through a non-conductive material will potentially create a lot of heat and potentially warping/damage to the non-conductive material.

Do you have a link to the concept of an electrostatic charge attracting lightning?


RE: ?
By PlasmaBomb on 3/3/2008 4:40:30 PM , Rating: 2
Negative charges can act as a streamer and attract positive lightning.

http://en.wikipedia.org/wiki/Lightning
http://www.aerospaceweb.org/question/design/q0234....

Perhaps not the best links but it should get you started :)


RE: ?
By MrDiSante on 3/3/2008 8:46:41 PM , Rating: 2
Thank you sir, I will now worry myself silly over a form of lightning that is less than 5% of lightning strikes.


RE: ?
By random git on 3/4/2008 10:19:40 AM , Rating: 2
Pardon the cliche, but source? No link needed, a name of a book would be best.


RE: ?
By kkwst2 on 3/3/2008 1:44:21 PM , Rating: 5
Lightning physics is quite complicated. If the plane shell is non-conductive, the lightning might choose to go through other things, such as essential electronics or large bags of salt water being transported on the inside.


RE: ?
By fictisiousname on 3/3/2008 6:16:32 PM , Rating: 3
OUCH! I've been called lots of things, but a "large bag of salt water being transported on the inside" is going toooo far, buster 8-\


RE: ?
By Farfignewton on 3/3/2008 9:08:37 PM , Rating: 2
quote:
OUCH! I've been called lots of things, but a "large bag of salt water being transported on the inside" is going toooo far, buster 8-\


"Correction: uhhh... fluid filled biped? Watery fleshed sentient? I'll uh... work on it."


RE: ?
By dflynchimp on 3/3/2008 10:43:15 PM , Rating: 2
"Meatbag"


RE: ?
By Raidin on 3/4/2008 6:21:05 PM , Rating: 2
Or maybe "ugly bags of mostly water"? Anyone remember where that quote is from? Though I may have misquoted it a bit.


Great! Now we can...
By Dfere on 3/3/2008 12:50:03 PM , Rating: 2
Build the flaming giant sword and animal arms and legs.




RE: Great! Now we can...
By Alphafox78 on 3/3/2008 1:00:06 PM , Rating: 2
What the..


RE: Great! Now we can...
By Korvon on 3/3/2008 1:17:03 PM , Rating: 2
For those of you who dont know. Its a Gundam reference. (Anime)


RE: Great! Now we can...
By nugundam93 on 3/3/2008 1:38:04 PM , Rating: 3
isn't that supposed to be Voltron?

the one with the lions anyway, not the vehicles.


RE: Great! Now we can...
By nugundam93 on 3/3/2008 1:05:29 PM , Rating: 3
hahahahaha nice one!

this is definitely an exciting development. I hope I can see [and make use of] an orbital elevator in my lifetime. :)


RE: Great! Now we can...
By Hydrofirex on 3/3/2008 6:37:33 PM , Rating: 2
*Ahem* Me thinks thy means "Form Blazing Sword!"

HfX


Space Elevator
By KristopherKubicki (blog) on 3/3/2008 1:02:52 PM , Rating: 5
Almost there Arthur :)




RE: Space Elevator
By Mitch101 on 3/3/2008 1:34:28 PM , Rating: 5
Space Elevator. Great way to revive "The Girl from Ipanema" while you ride it.


RE: Space Elevator
By Misty Dingos on 3/3/2008 2:17:11 PM , Rating: 1
All that would lead to is a large number of suicides. You can't listen to any elevator music that long. It just isn't healthy.

Maybe the Beastie Boys or Roy Orbison?


RE: Space Elevator
By Mitch101 on 3/5/2008 9:43:16 AM , Rating: 2
I'm sorry Misty Dingos your right.

I should apologize to those who cant get that song/music out of their heads now.


Wow
By TerranMagistrate on 3/3/2008 1:11:55 PM , Rating: 2
So many potential applications for carbon nanotubes. Mind boggling even.

It's going to become a billion dollar industry soon with companies like Nanocomp right at the center of it.





RE: Wow
By Master Kenobi (blog) on 3/3/2008 1:32:07 PM , Rating: 4
quote:
It's going to become a trillion dollar industry soon with companies like Nanocomp right at the center of it.

There, fixed that for you.


RE: Wow
By sweetsauce on 3/3/2008 1:59:07 PM , Rating: 2
Those guys definitely hit the proverbial lottery.


RE: Wow
By Integral9 on 3/3/2008 3:40:57 PM , Rating: 2
Did someone say IPO?


RE: Wow
By idconstruct on 3/3/2008 6:55:42 PM , Rating: 2
No kidding...

In 20 years you can use my private jets and cruise ships if I can use your SpaceShipOne ;)


Question
By Comdrpopnfresh on 3/3/2008 2:57:10 PM , Rating: 2
So buckyballs are carcinogenic, but not nanotubes?




RE: Question
By JoshuaBuss on 3/3/2008 6:22:46 PM , Rating: 4
yah, first balls now tubes..

seems like these carbon structures are awfully phallic.. ;)


RE: Question
By fic2 on 3/3/2008 7:03:31 PM , Rating: 4
Hmm, somewhere around in my spam folder I have seen something that can help enlarge that nanotube. Let me check around and get back to you.


RE: Question
By mmcdonalataocdotgov on 3/6/2008 3:11:35 PM , Rating: 2
Why do you think that guy is laying next to the sheet? It killed him.


Slow...
By DigitalFreak on 3/3/2008 1:10:24 PM , Rating: 2
One sheet per day? Not quite mass production...




RE: Slow...
By fic2 on 3/3/2008 1:14:59 PM , Rating: 2
It is probably 1000x better than anyone else is doing. It also seems that it is one sheet per machine per day so if they can make more machines they can increase production.


RE: Slow...
By geddarkstorm on 3/3/2008 1:31:29 PM , Rating: 3
Pfft, that's flyin', considering the size of the sheets. It is a major breakthrough in this industry to say the least. And to think this is just the first inception of the technology; port it over to ink jet like processes and we could see carbon nanotubes being pumped out as quickly as printed paper. At least that's the lofty theory and hope.

Considering all the potential applications of this tech, it looks like we can finally get started testing it out and seeing tangible benefits for mass consumers.


RE: Slow...
By gsellis on 3/3/2008 2:45:46 PM , Rating: 2
It is if you have a couple hundred machines running.


Ban Carbon nonotubes NOW!
By arazok on 3/3/2008 3:06:09 PM , Rating: 1
It's already killed one scientist!




RE: Ban Carbon nonotubes NOW!
By Davelo on 3/3/2008 4:13:28 PM , Rating: 2
I don't know what happened to the scientist but I thought that CNT dust can be breathed and cause lung failure.


RE: Ban Carbon nonotubes NOW!
By xsilver on 3/3/2008 7:17:28 PM , Rating: 2
The scientist died from realizing that his company stock is going to be worth millions.


RE: Ban Carbon nonotubes NOW!
By jlips6 on 3/4/2008 12:23:09 PM , Rating: 2
scientists are a little bit hazy when it comes to proving carbon nanotubes are toxic. They kill cells when they enter the membrane, and then build up in the cytoplasm. (that's what they like to do. who knew?) So this + the dust issue can easily be solved with hazmat suits, or just gloves and masks. most of this is handled by machines anyway, and when it's finished the tubes should become structurally stable, so I don't know if we should ban the "miracle material" because they killed one person who didn't know they were handling it wrong.


RE: Ban Carbon nonotubes NOW!
By Staples on 3/4/2008 9:32:28 AM , Rating: 2
I agree. Sure it is a great material but if it is toxic, then there is little use for it if it is not safe to handle. Nano particles can be potentially very dangerous and the more we use them, the more danger there is possed to the human race. I just hope these things stick together and never decompose into nano particles.


Questions
By dever on 3/3/2008 2:58:21 PM , Rating: 4
For those of you who are familiar, a potentially dumb question... what is holding the nanotubes together? Is there some sort of binder, or are the millimeter length tubes attracted to each other, or are they tangled?




RE: Questions
By jlips6 on 3/5/2008 9:53:03 PM , Rating: 2
i think that the molecular structure of the tubes themselves can bind to each other. Not sure now that you mention it. :\


Weight for me
By Jynx980 on 3/5/2008 3:52:33 AM , Rating: 2
quote:
...weigh a mere 20 percent as much as the copper wiring per volume.

He points out that a current 747 jet has two tons of copper wire aboard -- a weight cost that could be cut in half by the use of nanotubes


Err.. why is it only cut in half if it weighs just 1/5?




RE: Weight for me
By Haven Bartton on 3/5/2008 2:05:37 PM , Rating: 2
I would imagine some copper would need to be kept for specific purposes maybe? Or as redundancy?


Important Question
By clovell on 3/5/2008 12:02:19 PM , Rating: 2
Are these guys publicly traded?




more vulnerable to lightning
By phxfreddy on 3/3/2008 8:42:55 PM , Rating: 1
if you are in a metal aircraft it forms a faraday cage and conducts the electricity around you....very little voltage drop. Since Power = V * I and V~0 then little power is discharged in the planes conduction. If this resistance goes up now it starts dissipating more power. Very bad.




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