Microresonator (IMAGE) Optica Caption Researchers created a chip-based ring resonator that operates in the ultraviolet and visible regions of the spectrum and exhibits a record low UV light loss. The resonator (small circle in the middle) is shown with blue light. Credit Chengxing He, Yale University Usage Restrictions None License Original 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.