Single-Walled Carbon Nanotubes (IMAGE) Lomonosov Moscow State University Caption Schematic representation of the three types of the single-walled carbon nanotubes. The black dots correspond to the carbon atoms, and the lines between them show the relations between the carbon molecules. Credit . Source:<i> Progress in Materials Science</i> 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.