"NANOTECH: Researchers lengthen carbon nanotubes"
Researchers at Rensselaer Polytechnic Institute have demonstrated the world's longest carbon nanotubes. Using chemical vapor deposition (CVD), the standard process for semiconductor fabrication, researchers discovered that adding hydrogen and sulfur compounds produced high yields of wires as long as eight inches.

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Story in EE Times: http://www.eet.com/at/news/OEG20020514S0024