Figure 2: Diffraction and spectral evidences for VO2(B) nanosheets under compression.

(a) In situ synchrotron XRD patterns of VO2(B) as a function of pressure show the pressure-induced amorphization happened around 21 GPa. (b) Infrared spectra taken between ambient pressure and 23.6 GPa. (c) Raman spectra taken between 1.4 and 22.7 GPa. (d,e) Detailed infrared and Raman spectra at the starting, highest pressure and recovered states.