West-Sweden’s landmark, Vinga Lighthouse (IMAGE) Chalmers University of Technology Caption A 3D-printed model of West-Sweden’s landmark, Vinga Lighthouse. The colour of the material is determined by the metal used for the nanoparticles in the plasmonic plastic, as well as their shape and size. Credit Chalmers/Malin Arnesson Usage Restrictions Editorial use only License Original 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.