From Spheres to Worms (IMAGE) University of Würzburg Caption Specific interactions cause spherical nanoparticles of polymers to rearrange themselves into worm-like structures during cooling. The resulting hydrogel dissolves again when heated. Credit Theresa Zorn / University of Wuerzburg Usage Restrictions none License Original 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.