Xiaopeng Fan, Ying Jiang, Xiujuan Zhuang, Hongjun Liu*, Tao Xu, Weihao Zheng, Peng Fan, Honglai Li, Xueping Wu, Xiaoli Zhu, Qinglin Zhang, Hong Zhou, Wei Hu, Xiao Wang, Litao Sun, Xiangfeng Duan, and Anlian Pan*, Broken Symmetry Induced Strong Nonlinear Optical Effects in Spiral WS2 Nanosheets, ACS Nano, 11, 4892-4898 (2017)>PDF