Figure 2.

(a) Probability plot of the surveillance of MoS₂ drumheads at different stresses and corresponding Weibull fitting for the two batches of as-grown samples. (b) Goodman diagram representing the applied static (horizontal axis) and dynamic (vertical axis) stress, normalized to the mean breaking strength. Black circles correspond to drumheads that survived after 4.3 × 10⁹ cycles, gray circles represent those that fractured between 1 and 4.3 × 10⁹ cycles, and white dots represent those that broke just after reaching the DC load. (c) S–N diagram with varying σ_DC at two different σ_AC of 0.125⟨σ_F⟩ and 0.025⟨σ_F⟩. (d) S–N diagram of microdrums supporting σ_AC/σ_F of 0.6⟨σ_F⟩ and 0.45⟨σ_F⟩ with varying σ_AC. (e) Goodman lines for microdrums that did not fracture (solid line, lim = 0.45⟨σ_F⟩, c = 1.5), for 10⁹ cycles (dashed line, lim = 0.26⟨σ_F⟩, c = 1) and 10⁸ cycles (dotted line, lim = 0.36⟨σ_F⟩, c = 1.1). Note that, for nonbroken microdrums, we only provide an upper limit. (f) Static fatigue for as-grown MoS₂. Red dots: microdrums that broke in times lower than 12 h. Gray dots: microdrums that did not break after 12 h of static loading.