Nanoparticle Shapes (IMAGE) Duke University Caption The new upside-down fabrication method allows researchers to use a wide variety of new nanoparticle shapes, such as spheres and cuboctahedra — a shape consisting of eight triangular faces and six square faces. Credit Jon Stewart, Duke University Usage Restrictions None 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.