Georgia Tech Microresonator (IMAGE) Georgia Institute of Technology Caption This is a scanning electron microscope image of a microdonut resonator with an outer radius of two microns and center hole with 0.6-micron radius. Credit Georgia Tech/Zhixuan Xia 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.