Honey, I shrunk the carbon nanotubes

November 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: Hydrogen from water in iron nanotruss structures

Related Stories

Hydrogen from water in iron nanotruss structures

July 18, 2018

Swedish researchers have discovered a new and efficient way to use electrocatalysis to produce hydrogen gas from water. Instead of using expensive and difficult-to-obtain platinum electrodes, the new method uses electrodes ...

Single-celled architects inspire new nanotechnology

July 16, 2018

Diatoms are tiny, unicellular creatures, inhabiting oceans, lakes, rivers, and soils. Through their respiration, they produce close to a quarter of the oxygen on earth, nearly as much as the world's tropical forests. In addition ...

Study forecasts growth rates of loblolly pine trees

July 12, 2018

The ability to predict weather patterns has helped us make clothing choices and travel plans, and even saved lives. Now, researchers in Virginia Tech's College of Natural Resources and Environment are using similar predictive ...

Recommended for you

Targeting headaches and tumors with nano-submarines

July 20, 2018

Scientists at the Mainz University Medical Center and the Max Planck Institute for Polymer Research (MPI-P) have developed a new method to enable miniature drug-filled nanocarriers to dock on to immune cells, which in turn ...

Splitting water: Nanoscale imaging yields key insights

July 18, 2018

In the quest to realize artificial photosynthesis to convert sunlight, water, and carbon dioxide into fuel—just as plants do—researchers need to not only identify materials to efficiently perform photoelectrochemical ...

0 comments

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.