The scaling laws for polymer translocation through a nanopore depend on pore width

Results from an extensive Langevin Dynamics simulation study mapping the scaling of the translocation time with polymer length $\tau \sim $N$^{\alpha }$ over a wide range of nanopore widths will be presented. It is found that the scaling exponent $\alpha $ varies from 2.2 for a tight-pore up to an apparent saturation value of about 3.0 for wide pores. Further characterization given by measuring the average number of monomers in the pore $\langle $n$_{p}\rangle $ reveals not only pore-size dependence, but also that $\langle $n$_{p}\rangle $ \textit{decreases} with increasing N but increases as translocation proceeds. These results may explain why different simulation methods appear to predict different values for $\alpha$.