E-mode Gallium Nitride (GaN) (IMAGE) Naval Research Laboratory Caption Cem Basceri, QROMIS president and CEO, displays a 200 mm diameter 650V, E-mode gallium nitride (GaN) discrete power device wafer on a QST® (QROMIS Substrate Technology) substrate. Credit (Courtesy photo by QROMIS) 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.