Plasmonic Lens Array (IMAGE) University of California - Berkeley Caption In this scanning electron image of a 4-by-4 array of plasmonic lenses, each lens is 4 micrometers in diameter and can be used as an optical stylus in the pattern writing process. Credit Courtesy of Xiang Zhang Lab, UC Berkeley Usage Restrictions Use permitted with credit 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.