Fig. 8From: Electrokinetic Properties of TiO2 Nanotubular SurfacesCalculated ζ potential as a function of surface charge density σ for two values of the position of the slip plane (defined by the distance x z as shown in Fig. 7). The parameters used in the simulations are: NaCl = 100 mM, σ = −0.05 As/m2, α - = 12, and α + = 8Back to article page