Enhanced THz Transmission by Bull's Eye Structure Integrated with a Concentric Gold Hemisphere. - Sun, Mingqi; Liu, Yueyang; Shi, Yanpeng; Zhang, Yifei; Song, Jinmei; Li, Meiping; Shi, Shengnan; Zhang, Shan; Wang, Xiaodong; Yang, Fuhua (Crystals (2073-4352), 2022)