Expanding Polymer-Coated Gold Nanoparticles (IMAGE) University of Cambridge Caption Expanding polymer-coated gold nanoparticles. Credit Yi Ju/University of Cambridge NanoPhotonics Usage Restrictions Please credit to: Yi Ju/University of Cambridge NanoPhotonics 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.