Image 1 (IMAGE) Singapore University of Technology and Design Caption Schematic of the twisted bi-layer metasurface with two design configurations: aligned discs (intrinsic chirality) and displaced discs (unidirectional chirality). Detailed maps of eigenpolarization and far-field amplitude are shown for the design exhibiting unidirectional chirality. Key design parameters include interlayer distance, twist angle, and lateral displacement. Credit SUTD Usage Restrictions Image should be used with appropriate credit and caption 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.