Ukidama Nanoparticle Schematic (image) Okinawa Institute of Science and Technology (OIST) Graduate University Share Print E-Mail Caption When copper (orange) and silver (white) are expelled through the magnetron sputtering machine, the silver attaches to the copper and then spreads out around the copper core. However, the silver avoids certain areas, which creates the Ukidama (glass fishing float) structure. Credit OIST Usage Restrictions None Share Print E-Mail 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.