Carbon Chains (IMAGE) University of Vienna Caption Schematic representation of confined ultra-long acetylenic linear carbon chains inside different double walled carbon nanotubes. Credit Copyright: Lei Shi, Faculty of Physics, University of Vienna Usage Restrictions The image may only be used with appropriate caption or credit. 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.