Schematic and SEM of Plasmon Laser Setup (IMAGE) University of California - Berkeley Caption The schematic on the left illustrates light being compressed and sustained in the 5 nanometer gap -- smaller than a protein molecule -- between a nanowire and underlying silver surface. To the right is an electron microscope image of the hybrid design shown in the schematic. Credit Courtesy of Xiang Zhang Lab, UC Berkeley Usage Restrictions Must credit Xiang Zhang Lab at UC Berkeley if used. 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.