Figure 4. Nanopore streaming conductance.

(a) The ionic current I versus the imposed cross-pore pressure Δp in a R_p = 5 nm and L_p = 40 nm nanopore under various salt concentrations. The pore-radial distribution of the z-component ionic fluxes J_z (b), fluidic velocity u_z (c) and net charges ρ_e/e (d) at z = 0 nm with a longitudinal driving pressure Δp = 30 bar. Besides, in (b) the real lines characterize the convection flux J_c while dash lines represent the electrophoretic flux J_m which are defined as J_m(c) = J_m(c),+ − J_m(c),−. The inset of (c) plots the components of electrical current due to the ionic convection I_c and electro-migration I_m as functions of the imposed salt concentrations. The former is marked by the wine line with left-triangle symbols, while the latter by the navy line with right-triangle symbols.