ORNL's vertically aligned carbon nanotubes (IMAGE) DOE/Oak Ridge National Laboratory Caption ORNL's vertically aligned carbon nanotubes reduce friction to nearly zero to improve energy efficiency. Credit Chanaka Kumara/ORNL, U.S. Dept. of Energy Usage Restrictions None License Original 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.