Zinc Oxide Tetrapods (IMAGE) Technical University of Munich (TUM) Caption This is a picture of zinc oxide tetrapods taken by scanning electron microscope. Credit Picture of zinc oxide tetrapods taken by scanning electron microscope - Copyright 2012, Wiley; reproduced with permission (DOI:10.1002/adma.201203849) Usage Restrictions Free for use on coverage on 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.