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Water dipole orientations as a function of distance from the bilayer center from the no-salt, 0.25 M and 1 M NaCl simulations, along with results from the NaX simulation. cos θ > 0 corresponds to water oxygens pointing inward, and cos θ < 0 to water oxygens pointing outward, as illustrated in the figure. (A) The full profile, (B) details of the oscillations originating in the headgroup region and propagating well into the aqueous phase.
