Picture of UC (IMAGE) National Institutes of Natural Sciences Caption Fig. 2 Photographs of UC emission by a star-patterned invisible NIR LED irradiation on a flexible thin film. Credit NINS/IMS 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.