The current-voltage relation of a pore and its asymptotic behavior in a Nernst-Planck model

Marius Bîrlea, Nicolae; Bîrlea, Sînziana Iulia

doi:10.5617/jeb.296

Figures & Tables

Schematic representations of the three assumed profiles for the ion potential energy inside a pore: asymmetric triangular (black line); symmetric triangular (blue line); and trapezoidal (broken red line).

Fig. 2

A linear current density versus voltage plot of the three energy profiles (asymmetric triangular profile, j1, symmetric triangular profile, j2, trapezoidal profile, j3) and bulk current density (j0) for an energy barrier height of w = 2.15 (in kT units), a relative size of the entrance region of the pore of r = 0.3, and voltage, u, in kT/q units. The linear behavior at high voltages is clearly visible for the chosen voltage values.

Fig. 3

The double logarithmic current density versus voltage plot of the three energy profiles (asymmetric triangular profile, j1, symmetric triangular profile, j2, trapezoidal profile, j3) and bulk current density (j0) for an energy barrier height of w=2.15 (in kT units), a relative size of the entrance region of the pore of r=0.3, and voltage u>0 (kT/q units). This plot mainly shows the linear behavior of the current densities at small voltages.

The current-voltage relation of a pore and its asymptotic behavior in a Nernst-Planck model

Figures & Tables

Fig. 1

Fig. 2

Fig. 3

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