Gears (IMAGE) Technical University of Munich (TUM) Caption DNA-origami "gear-wheels" self-assembled from V-shaped building blocks. Image taken with a Titan Krios G2 300 kV cryo-elektron microscope. Scale-bar: 100 nm. Credit Hendrik Dietz / 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.