NANOTUBES 1 (IMAGE) Rice University Caption Rice University chemists in the lab of Bruce Weisman found a second level of fluorescence in single-walled carbon nanotubes. Credit Jeff Fitlow/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.