The Walking Hydrogel (image) RIKEN Share Print E-Mail Caption These are pictures showing the changing shape of the hydrogel as it 'walks' in a water environment in responses to changes of temperature. Credit Kim et al. Nature Materials Usage Restrictions Kim et al. Nature Materials Share Print E-Mail 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.