Fig. S1.

The onset frequency of the plateau in vDOS. Plot of the vDOS $g(\omega )$ against $\omega$. (A) The 3D model system. (B) The 2D model system. The data of the original (stressed) system (open symbols) and of the unstressed system (filled symbols) are presented. The packing pressures are $p=5\times {10}^{-2}$, $5\times {10}^{-3}$, and $5\times {10}^{-4}$. The onset frequency of the plateau ${\omega }^{\ast }$ is indicated by arrows.