title: Translocation of stiff polymers through a nanopore driven by binding particles.
abstract: We investigate the translocation of stiff polymers in the presence of binding particles through a nanopore by two-dimensional Langevin dynamics simulations. We find that the mean translocation time shows a minimum as a function of the binding energy ε and the particle concentration φ, due to the interplay of the force from binding and the frictional force. Particularly, for the strong binding the translocation proceeds with a decreasing translocation velocity induced by a significant increase of the frictional force. In addition, both ε and φ have a notable impact on the distribution of the translocation time. With increasing ε and φ, it undergoes a transition from an asymmetric and broad distribution under the weak binding to a nearly Gaussian one under the strong binding, and its width becomes gradually narrower.
authors.affiliation: CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui Province 230026, People's Republic of China.
authors.forename: Wancheng
authors.initials: W
authors.lastname: Yu
authors.forename: Yiding
authors.initials: Y
authors.lastname: Ma
authors.forename: Kaifu
authors.initials: K
authors.lastname: Luo
mesh_terms: D055595:Mechanical Phenomena; D008968:Molecular Conformation; D056004:Molecular Dynamics Simulation; D009038:Motion; D058608:Nanopores; D011108:Polymers / Q000737:chemistry*; D013997:Time Factors
chemical_list: D011108:Polymers