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二次谐波在二维材料结构表征中的应用
夏芳芳1(), 王发坤1, 胡海龙2, 许翔1, 李阳1, 翟天佑1()
Application of Second Harmonic Generation in Characterization of 2D Materials
XIA Fangfang1(), WANG Fakun1, HU Hailong2, XU Xiang1, LI Yang1, ZHAI Tianyou1()

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]