Designer Materials from Nanoparticles (IMAGE) Iowa State University Caption This image shows a crystal of nanoparticles (the red and blue spheres) held together by DNA strands (the orange lines) via the hybridization of complementary sequences (the blue and red rings). Credit Image courtesy of Chris Knorowski/Iowa State University/Ames Laboratory Usage Restrictions None 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.