CHARM3D Printing 2 (IMAGE) National University of Singapore Caption Using the CHARM3D printing technique, researchers from the National University of Singapore fabricated intricate 3D unit cells made of electromagnetic band gap (EBG) metamaterials, paving the way for more optimised signal sensing and processing applications. Credit National University of Singapore Usage Restrictions NA 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.