Silicon Bullseye Microdisk (IMAGE) Optica Caption Researchers created an optomechanical silicon bullseye disk that traps optical waves in the outermost ring via total internal reflection while the radial groves confine the mechanical waves to the same area. Credit Thiago P. Mayer Alegre, University of Campinas 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.