Polyoxometalate crystals (IMAGE) Ural Federal University Caption Crystals of nanocluster polyoxometalate obtained in the laboratory. Credit Photo: Alexander Ostroushko / UrFU. Usage Restrictions Photos may be freely used to illustrate this topic, but please credit the author of the image 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.