Same as Fig. 7 but only for a-C BA (dashed lines) and BAM2 (dotted lines) grains. The left panel shows the impact of critical rolling displacement ξ_crit ∈ [0.2 nm, 6.4 nm] on ω_disr, while the viscous dumping time T_vis remains constant. The right panel is for a constant ξ_crit but with T_vis ∈ [1 ps, 9 ps]. Red lines represent the default parameters of our N-body disruption simulations.