[Nature Nanotechnology, 2020] A sensitive and specific nanosensor for monitoring extracellular potassium levels in the brain (Jianan Liu, Fangyuan Li, Yi Wang, Limin Pan, Peihua Lin, Bo Zhang, Yanrong Zheng, Yingwei Xu, Hongwei Liao, Giho Ko, Fan Fei, Cenglin Xu, Yang Du, Kwangsoo Shin, Dokyoon Kim, Sung-Soo Jang, Hee Jung Chung, He Tian, Qi Wang, Wei guo, Jwa-Min Nam, Zhong Chen, Taeghwan Hyeon, and Daishun Ling)