GROOVES 2 (IMAGE) Rice University Caption Rice University researchers found single-walled carbon nanotubes line up side by side in 2D films due to small grooves in the filter paper upon which the films form during vacuum filtration. Films as large as 1 inch in diameter (top left) form atop paper filters that separate nanotubes from liquid surfactant. Rice researchers showed that grooves in the paper (top right) guide nanotubes (bottom) into highly ordered arrangements. Credit Kono Group/Rice University Usage Restrictions None 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.