Figure 5: Peak frequencies of 
and A1g modes as a function of pressure of WSe2, respectively.
and A1g modes as a function of pressure of WSe2, respectively.From: Pressure-induced iso-structural phase transition and metallization in WSe2
The solid lines are for eye guide. The peak intensity of modes is indicated by a colour scale extending from 787 (dark blue) to 64711 (bright red). The insets show the schematics of vibrational Raman modes with the black dotted line representing weak vdW bonds between the adjacent layers.
