Nanotube (IMAGE) University of Tokyo Caption Transmission electron microscopy image of a hollow core nanotube. The white scale bar corresponds to 10 nanometers (left). Rendering of a nanotube (right) Credit © 2019 Iwasa et al. Usage Restrictions © 2019 Iwasa et al. 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.