Figure 1.
(a) AFM image of a representative MoS2 microdrum. (b) Force vs indentation curve on a MoS2 microdrum where the DC and AC forces are marked, along with the corresponding indentation. (c) Upper panel: illustration of an AFM tip indenting a microdrum. Lower panel: sharp decrease in the deflection of the cantilever at the fracture point. (d) Representative data observed near the fracture point. Before failure, the cantilever amplitude is low as a consequence of the reacting force of the suspended membrane. After failure, the cantilever amplitude increases with the free oscillation amplitude.