Figure 3
Shows cavitation bubble collapse giving rise to a nanojet and a vortex. (a) Snapshot taken at t = 1.75 ps shows velocity streamlines of the nanojet resulting from the bubble collapse. The color represents the magnitude of the stream velocity, which ranges between 3 and 6 km/s. The nanojet length and width are 6.5 nm and 3 nm, respectively, and the pressure at the tip of the nanojet is around 20 GPa. (b) The inset shows a vortex generated by the nanojet. The nanojet impact on MoS2 creates a 3 nm wide and 1 nm deep pit at t = 3 ps. (c) von Mises shear strain distribution in the pit region initiates exfoliation of MoS2.
