Tribometer (IMAGE) DOE/Oak Ridge National Laboratory Caption ORNL researchers used a tribometer for friction testing to show that carbon nanotubes in the presence of even one drop of oil could sustain superlubricity over 500,000 cycles. Credit Carlos Jones/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.