Morphing Surfaces of Ionic Nanocrystals (IMAGE) Kyoto University Caption Kyoto University team exploit preexisting crystal "molds" to make copper oxide nanocrystals morph into hollow copper sulfide nanocages through anion exchange, and ultimately into cadmium sulfide and zinc sulfide nanocages. Credit Kyoto University Usage Restrictions Please credit Kyoto University 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.