Recording-breaking diodes (IMAGE) DOE/Sandia National Laboratories Caption A close-up of the array of record-breaking gallium nitride diodes created by a team of Sandia National Laboratories scientists. These diodes are a step on the path to protecting the electrical grid from EMPs. Credit Photo by Rebecca Gustaf/Sandia National Laboratories Usage Restrictions With credit License Original 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.