GaN crystal sample (image) Japan Science and Technology Agency Share Print E-Mail Caption Front side: Transparent, no unnecessary polycrystals are generated on the wafer edge. Back side: Since the surface is smooth, the fluorescent light is reflected. Credit © Tokyo University of Agriculture and Technology & Taiyo Nippon Sanso Co. Usage Restrictions None Share Print E-Mail 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.