Unexpected Formations (IMAGE) The American Ceramics Society Caption Unique nanostructures have been grown on both the interior and exterior of the hollow glass microspheres Credit Savannah River National Lab, American Ceramic Society 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.