Figure 1
(a) Homogenous nucleation of stacking faults on {111} slip planes occurring at σz = 32.5 GPa and τ = 6.4 GPa as a shock wave travels from left to right. Atomic color is indicative of the absolute value of the local shear stress. (b) Significant relaxation (blue color) is seen in the 4 ps time step. (c) Recovered microstructure from a 50 J laser-driven shock experiment: ~11 GPa peak shock pressure2,13. (d,e) Higher magnifications showing the tip of the dislocation structure and a large mass of stacking faults, respectively. The growth of subsequent stacking fault layers can be seen in both molecular dynamics and laser experiments; this process occurs in order to expedite the relaxation of high shear stresses.
