The Perfect Cut (IMAGE) Fraunhofer-Gesellschaft Caption Using a light microscope to study sawed silicon wafer surfaces. In the foreground: a silicon block with sawed wafers, coils of wire and a finished solar cell. Credit Fraunhofer IWM Usage Restrictions The picture may be used for editorial purposes only. It is protected by copyright. The use is free of charge if the reference is mentioned. 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.