Long-wave infrared polarization-sensitive metamaterial broadband absorber based on ring-grating composite structure. - Liu, Yuetao; Wu, Zhe; Guo, Siyu; Wei, Xintong; Geng, Jizheng; Liu, Siyu; Zhu, Shijia; Sun, Wenwen; Wang, Wenwen; Yang, Fuming; Shi, Xiaoyan; Liang, Zhongzhu (Journal of Physics D: Applied Physics, 2026)