[Figure3] Cover image of the article (IMAGE) National Research Council of Science & Technology Caption KERI's nanoscale 3D printing technology for structural coloration was featured as a cover article in ACS Nano. Credit Korea Electrotechnology Research Institute Usage Restrictions The sources of photos and research results from KERI must be specified. 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.