Underwater sound focusing via quasi-three-dimensional gradient-index lensRemoveSeong-Jin Lee, Jung-Woo Kim, Sang-Hoon Kim, Dongwoo Lee, Beomseok Oh, Junsuk Rho, and Gunn HwangPhys. Rev. Applied 23, 064057 (2025)
Triband higher-order topological insulatorsRemoveZhan Xiong, Yang Liu, Zhi-Kang Lin, Ze-Lin Kong, and Jian-Hua JiangPhys. Rev. Applied 24, 024049 (2025)