High proton conductivity through angstrom-porous titania - Yu Ji; Guang-Ping Hao; Yong-Tao Tan; Wenqi Xiong; Yu Liu; Wenzhe Zhou; Dai-Ming Tang; Renzhi Ma; Shengjun Yuan; Takayoshi Sasaki; Marcelo Lozada-Hidalgo; Andre K. Geim; et al. (Nature Communications, 2024)