Water-Assisted Growth of Twisted 3R-Stacked MoSe₂ Spirals and Its Dramatically Enhanced Second Harmonic Generations

Xiangzhuo Wang, Qiuyu Shang, Fang Zhang, Jiepeng Song, Jiatian Fu, Liyun Zhao, Jingyi Hu, Jialong Wang, Wenzhi Quan, Yahuan Huan, Qilong Wu, Tinglu Song, Junfeng Han, Wende Xiao, Qing Zhang^*, Yanfeng Zhang^*