Nanodiamonds (IMAGE) Tokyo University of Science Caption In a breakthrough study, scientists from Japan use nanodiamonds to construct supercapacitors that can be widely used as a more efficient alternative to conventional energy-storage devices. Credit Tokyo University of Science 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.