Honey, I shrunk the carbon nanotubes

Nov 14, 2006

U.S. scientists say they have developed a method of controllably altering the diameter of individual carbon nanotubes.

Alex Zettl and colleagues at the University of California, Berkeley and the Lawrence Berkeley National Laboratory say carbon nanotubes' ability to conduct electricity and other electrical and mechanical properties depends heavily on their size. However, current methods for making CNTs cannot reliably control nanotube diameter, making it more difficult to fabricate devices from nanotubes.

"We have developed a method to shrink individual nanotubes to any desired diameter," the researchers report. "The process can be repeated in a highly controlled fashion, yielding a high-quality CNT of any pre-selected and precise diameter."

The method, involving a high-temperature that shrinks regular-sized CNTs and reforms them into high-quality tubes of a smaller diameter, is to be detailed in the Dec. 13 issue of the journal Nano Letters.

Copyright 2006 by United Press International

Explore further: A new wrinkle for cell culture

Related Stories

Myth of tolerant dogs and aggressive wolves refuted

2 hours ago

Dogs are regarded as more tolerant and less aggressive compared to their ancestors, the wolves. Researchers from the Messerli Research Institute at the Vetmeduni Vienna question this image. They show in a ...

Recommended for you

A new wrinkle for cell culture

Apr 23, 2015

Using a technique that introduces tiny wrinkles into sheets of graphene, researchers from Brown University have developed new textured surfaces for culturing cells in the lab that better mimic the complex ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.