Hydrogel (IMAGE) Nanyang Technological University Caption Scientists from NTU and CMU created a leaf-like hydrogel structure through a process similar to how real leaf tissues grow. Credit CMU and NTU 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.