Collage of Crystalline (IMAGE) Harvard University Caption These false-color SEM images reveal microscopic flower structures created by manipulating a chemical gradient to control crystalline self-assembly. Credit Wim L. Noorduin, Harvard University 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.