Figure 3. Average translocation times, τ with small (R_s) and large (R_l) nanopores for the structured polymer of size N = 49, as a function of the rescaled pulling force f.

Decreasing the size of the nano-pore slows down the translocation process at fixed f. At large f modifications are limited, whereas at low forces the size of the pore strongly influences the translocation. The translocation time scales as about the inverse of the force ∝ f ⁻¹ (bottom dashed line) for the large pore in the entire range, with a slight upward bending at high-f. For the narrow pore this behavior is observed at high-f, while we find a cross-over to an apparent τ ∝ f ⁻² in the low-force regime (top dashed line).