Particles in a Colloidal Gel (IMAGE) University of Bristol Caption Colloidal particles, that mimic atoms, form a gel with the structure of glass. Credit Paddy Royall, University of Bristol, UK Usage Restrictions Only to be used in association with this article. 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.