FIG 1 (IMAGE) Compuscript Ltd Caption Representative schematic illustration and digital camera images for microcavity-assisted crack propagation and its corresponding undoped-GaN and green LED membranes, respectively Credit OEA Usage Restrictions Credit must be given to the creator. License CC BY 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.