Sorting Crystal Shapes (IMAGE) Princeton University, Engineering School Caption In this graphic representation of the analysis, colloids form the initial two layers of a crystal, at left. With the addition of the third layer, the crystal forms one of two possible shapes, which are shown at right. The vertical blue line to the right of each crystal shows a representative shape of the polymer when confined in the voids between colloids in each crystal. Credit Nathan Mahynski et al Usage Restrictions Non-Commercial Use Only 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.