Comment on “Hydrophobic Surface Enhances Electrostatic Interaction in Water”

Figure 1

(a) Water mass density profile at a graphene layer. The Gibbs dividing surface position is denoted by a red vertical line and the bulk density by a horizontal dotted line. (b) Perpendicular electric field profiles. The black line shows $\mathrm{\Delta }{E}_{\perp }(z)$ directly extracted from a simulation for a finite applied displacement field of $D_{\perp }^{\prime }/{ϵ}_0=0.25\mathrm{V}{\mathrm{nm}}^{-1}$, according to Eq. (3); the blue and red lines show the linear-response prediction according to Eq. (4) using Eq. (1) [4] and Eq. (2), respectively.