Matías Soto and Enrique Barrera (IMAGE) Rice University Caption Rice University graduate student Matías Soto, left, and materials scientist Enrique Barrera, right, led a study to calculate the properties of a variety of zigzag double-walled carbon nanotubes. They found it may someday be possible to tune double-walled tubes for specific electronic properties by controlling their configuration, chiral angles and the distance between the walls. Credit Jeff Fitlow/Rice University Usage Restrictions For news reporting purposes only. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.