29 Oct '12, 10am

IBM researchers demonstrate initial steps toward commercial fabrication of carbon nanotubes as a successor to silicon

IBM researchers demonstrate initial steps toward commercial fabrication of carbon nanotubes as a successor to silicon 29 October 2012 IBM scientists have shown that ion-exchange chemistry can be used to fabricate arrays of individually positioned carbon nanotubes with a density as high as 1 × 109 cm−2 —two orders of magnitude higher than previous reports. With this approach, they assembled a high density of carbon-nanotube transistors in a conventional semiconductor fabrication line and then electrically tested more than 10,000 devices in a single chip. The achievement, published in the journal Nature Nanotechnology , is a step on the path for commercial fabrication of significantly smaller, faster and more powerful computer chips. IBM SEM image of carbon nanotubes deposited on a trench coated in hafnium oxide (HfO2 ) showing extremely high density and excellent selectivit...

Full article: http://www.greencarcongress.com/2012/10/ibm-20121029.html

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