Illustration of Aligned Metallic Carbon Nanotubes (image) Tokyo Metropolitan University Share Print E-Mail Caption This is an illustration of aligned metallic carbon nanotubes in the team's thermoelectric device. A temperature gradient causes an electrical current to flow. Credit Tokyo Metropolitan University Usage Restrictions None Share Print E-Mail 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.