Abstract
Using two-dimensional Langevin dynamics simulations, we investigate the dynamics of polymer translocation into a fluidic channel with diameter through a nanopore under a driving force . Due to the crowding effect induced by the partially translocated monomers, the translocation dynamics is significantly altered in comparison to an unconfined environment, namely, we observe a nonuniversal dependence of the translocation time on the chain length . initially decreases rapidly and then saturates with increasing , and a dependence of the scaling exponent of with on the channel width is observed. The otherwise inverse linear scaling of with breaks down and we observe a minimum of as a function of . These behaviors are interpreted in terms of the waiting time of an individual segment passing through the pore during translocation.
5 More- Received 26 May 2010
DOI:https://doi.org/10.1103/PhysRevE.82.021922
©2010 American Physical Society