SEM Picture of Hexaborides (image) University of California - San Diego Caption The researchers have created for the first time compounds made from mixtures of calcium hexaboride, strontium and barium hexaboride. From left: Scanning electron microscope image of hexaboride structure at the 5 micron scale; image at the 500 nanometers scale. Credit Jacobs School of Engineering/UC San Diego Usage Restrictions Please credit Jacobs School of Engineering/UC San Diego 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.