Edge Waving (Configuration IV) (IMAGE) Nanyang Technological University Caption NTU scientists grew hydrogels to mimic the edge waving pattern found naturally in various leaves. Credit NTU Singapore Usage Restrictions For this story only 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.