Alberto Fernandez-Nieves in Lab (IMAGE) Georgia Institute of Technology Caption Researchers now believe they understand why oversized microgel particles spontaneously shrink to allow formation of colloidal crystals in assemblies of smaller microparticles. Shown in a laboratory used to study the particles is Georgia Tech Associate Professor Alberto Fernandez-Nieves. Credit Credit: John Toon, Georgia Tech Usage Restrictions None 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.