Ji-Won Lee (IMAGE) Hokkaido University Caption Ji-Won Lee, the collaborator from Hokkaido University. Credit Ji-Won Lee Usage Restrictions This image is copyrighted but may be used to report this press release 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.