A Large Vortex (IMAGE) Hokkaido University Caption A large vortex was formed under radial strain on the substrate. Credit Daisuke I. et al., <i>ACS Nano</i>. October 4, 2019 Usage Restrictions These images are copyrighted and can be used for reporting this research work without acquiring a permission if credited as instructed. 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.