Fig. S6.

The vDOSs at different $p$ in the 2D unstressed system. $g(\omega )$ is plotted against the scaled frequency $\widehat{\omega }=\omega /{\omega }_{\ast }$ for several different $p$. Inset is the same as the main image, but for the reduced vDOSs $g/\widehat{\omega }$. The vDOSs are collapsed onto a universal function of the scaled frequency $\widehat{\omega }$ over the entire $\omega$ regime. At ${\omega }_0$ = 0.29${\omega }_{\ast }$, $g(\omega )$ converges to the Debye vDOS $g(\omega )=A_0\omega$.