Figure 6.

Hydrodynamic properties of system A: (a) illustration of liquid velocity profile normal to a solid surface, where the shear plane position z_s is shown; (b–e) velocity profiles of interfacial liquid along the x direction under different surface charge densities, where the red and blue regions correspond to those defined in subfigure a, and vertical dashed lines indicate different planes defined in Figure 2; and (f) the variations of viscosity, thickness of immobile layer, and interlayer slippage length of interfacial liquid with the surface charge density.