Purified Carbon Nanotubes (IMAGE) Rice University Caption A transmission electron microscope image of purified carbon nanotubes. Researchers at Rice University and the National University of Singapore are developing a process to remove impurities from batches of long nanotubes to spin them into continuous, conductive fibers. Credit Complex Flows of Complex Fluids/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.