Properties of Dimers when Illuminated (image) Purdue University Caption A single gold nanoparticle, or monomer, appears green when illuminated (top left), while a pair of gold nanoparticles bound to an mRNA splice variant, or dimer, appears reddish (top right). Monomers and dimers also scatter light differently, as shown in the graph above. Credit Purdue University / Joseph Irudayaraj Usage Restrictions Credit Purdue University / Joseph Irudayaraj 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.