Terahertz nano-imaging of metal-insulator transition in Cd2Os2O7 Ran Jing, Lin Xiong, Hishiro T. Hirose, Yinming Shao, Alex S. Mcleod, Xinzhong Chen, Mengkun Liu, Zenji Hiroi and D. N. Basov EPL, 137 5 (2022) 56001 Published online: 06 May 2022 DOI: 10.1209/0295-5075/ac5933