fig5

Figure 5. Mechanical properties of MoS₂, MoSe₂, WS₂ and WSe₂. (A) the elastic constants; (B) including bulk moduli (B), shear moduli (G), Young’s moduli (Y), microhardness (H); (C) including poisson’s ratio (ν) and B/G ratios. (A-C) are adapted with permission^[82]. Copyright 2022, Beilstein-Institute; (D) the volumetric Young’s moduli; (E) fracture strengths of 1-3 L WS₂, WSe₂, and WTe₂. Colored regions denote literature-reported theoretical ranges for 1 L materials, while dashed lines correspond to our reference reported density functional theory (DFT)-calculated Young’s moduli along two directions. (D and E) are adapted with permission^[83]. Copyright 2021, American Chemical Society.