Key Figures (IMAGE) Hokkaido University Caption The soft hydrogel (top left) instantly hardens (top right) responding to heat. The hardened gel is strong enough to support 10Kg weight (bottom). (Nonoyama T. et al., Advanced Materials, November 18, 2019) Credit Nonoyama T. et al., Advanced Materials, November 18, 2019 Usage Restrictions These images are copyrighted and can be used for reporting this research work without obtaining a permission if credited properly. 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.