55. Luzhao Sun, Zihao Wang, Yuechen Wang, Liang Zhao, Yanglizhi Li, Buhang Chen, Shishu Zhang, Wendong Wang, Shan Zhong, Haiyang Liu, Lianming Tong, Mark H. Rümmeli, Konstantin S. Novoselov, Hailin Peng*, Li Lin*, Zhongfan Liu*. Hetero-site nucleation for growing twisted bilayer graphene with a wide range of twist angles.Nat. Commun. 2021, 21, 2391.