Coated LEDs with a Cozy Glow (IMAGE) Optica Caption At low current the coated LEDs emit a cozy, warm glow compared to uncoated reference LEDs. Credit Hugo J. Cornelissen Usage Restrictions This image may be used only with appropriate caption and 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.