Developing Nanorods (IMAGE) University of California - Riverside Caption From left to right: Iron oxide (Fe3O4) particles are coated with silica (SiO2) to form tiny linear chains that grow into robust peapod-like structures with the application of more silica. Credit Yin lab, UC Riverside. 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.