http://www.blogcdn.com/www.engadget.com/media/2012/10/ibmlabscarbonnanojt45.jpg Commercialization of carbon nanotubes is one of the holy grails of next-gen computing, and IBM thinks it’s made crucial steps toward making this a reality. This isn’t the first time that we’ve heard such a claim, of course, but IBM’s considerable resources will make this particularly interesting. The specific problem it’s been tackling is placing enough semiconducting nanotubes together to be useful in commercial chips, with current attempts being more in the hundreds, rather than billions that would be required. The new approach uses ion-exchange chemistry that allows controlled placement of nanotubes at two orders of magnitude greater than before, with a density of roughly a billion per square centimeter. To achieve this, the nanotubes are mixed with a soap-like substance that makes them water-soluble. Next, a substrate comprising two oxides and a hafnium oxide “trench” is immersed in the soap-solution, which results in the nanotubes attaching to the hafnium oxide canals with a chemical bond. Simple when you think about it! IBM hopes that as the materials and method are readily accessible now, that industry players will be able to experiment with nanotube technology at a much greater scale. Though, as we’ve become accustomed, there’s no solid timescales on when this might realistically unfold.
Continue reading IBM Labs develops ‘initial step’ towards commercial fabrication of carbon nanotubes
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IBM Labs develops ‘initial step’ towards commercial fabrication of carbon nanotubes originally appeared on Engadget on Sun, 28 Oct 2012 14:00:00 EDT. Please see our terms for use of feeds.
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Re: IBM Labs develops 'initial step' towards commercial fabrication of carbon nanotub
Thanks Mr. Bot.
Just one clarification re: CNTs being mixed with soapy substance to dissolve them in water. Ee believe the surfactants ( soapy substance) disperse CNTs in the medium ( in this case aqueous) and not dissolve them.
Re: IBM Labs develops ‘initial step’ towards commercial fabrication of carbon nanotub
Re: IBM Labs develops ‘initial step’ towards commercial fabrication of carbon nanotub
I think Mr. Bot’s very informative citation may have a slight inaccuracy. Surfacrants are typically used to disperse stuff in aqueous media. I doubt if the CNTs are actually being dissolved. I think they are being dispersed uniformly in aqueous medium.
Does not make sense to fabricate CNTs and redissolve them to attach the oxides.