where D P AO4 and D Fe 2 O 3 are the VDOS for the PAO4 and Fe 2 O 3 regions respectively. S has been used in a number of studies to rationalise changes to the ITR of solid-liquid and solid-solid interfaces. 2,102 However, we found no significant difference in S for the different solid-liquid potentials, as shown in Figure (c). Therefore, we conclude that the variations in R k with solid-liquid interaction strength do not originate from VDOS and must be attributed to other factors. These findings were consistent with results reported by who found no correlation between R k and the VDOS overlap, S, for the water-graphene interface.