Nano-crane Rotation (IMAGE) Technical University of Munich (TUM) Caption Scientists at the Technical University of Munich (TUM) have developed a novel propulsion technology for nanorobots: Electric fields drive nano-robot arms a hundred thousand times faster than with the biochemical processes used to date. The picture shows a nano-crane rotating between two docking points (red and blue). Credit Enzo Kopperger / TUM 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.