Ultra-Long Carbon Chains (IMAGE) University of the Basque Country Caption This is a schematic representation of confined ultra-long, linear carbon chains inside different double-walled carbon nanotubes. Credit © Lei Shi / Faculty of Physics, University of Vienna 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.