二次谐波在二维材料结构表征中的应用

夏芳芳, 王发坤, 胡海龙, 许翔, 李阳, 翟天佑

Application of Second Harmonic Generation in Characterization of 2D Materials

XIA Fangfang, WANG Fakun, HU Hailong, XU Xiang, LI Yang, ZHAI Tianyou

图7 二次谐波表征二维材料应变

Fig. 7 Characterization of the strain of 2D materials by SHG (a) Schematic of strain apparatus and SHG process in monolayer MoSe2 under uniaxial tensile strain; (b) SHG spectra under different strain; (c) Evolution of normalized SHG intensity with strain[46]; (d, e) Schematic illustration of two-point bending method and SHG patterns for applied tensile strains of 0.1%, 0.5%, and 0.95%[47]