Nanocrystals (image) University of California - Riverside Caption This image shows a solution of iron oxide in water changing color under a magnetic field, with increasing field strength from left to right. Credit Yin Lab, UC Riverside. Usage Restrictions None 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.