Surface Plasmon Resonance Gold Chip Surface (IMAGE) Optica Caption This is an expanded view of the aptamer-functionalized Surface Plasmon Resonance gold chip surface. Credit University of Toledo 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.