Optically Tuned Discs (IMAGE) Rice University Caption By arranging optically tuned gold discs in a closely spaced pattern, Rice University scientists created intense electrical fields and enhanced the nonlinear optical properties of the system. Here a computer model displays the plasmonic interactions that give rise to the intense fields. Credit Yu Zhang/Rice University Usage Restrictions Must 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.