Laser-printed emissive metasurface as an optical security platform Myeongkyu Lee, Dongkyun Kang, Jungwoo Pyo, Jaehyeong Kim, Yinhyui Joo and Jongyun Jeon EPJ Web Conf., 287 (2023) 05030 Published online: 18 October 2023 DOI: 10.1051/epjconf/202328705030