title: Barrier height of free energy on confined polymer translocation through a short nano-channel.
abstract: The translocation of a confined polymer chain through a nano-channel has been simulated by using two-dimensional bond fluctuation model (BFM) with Monte Carlo dynamics. It is found that the trapping time for the polymer chain to overcome the free energy barrier during the translocation, tautrap, depends exponentially on the chain length N and the channel length M, respectively. The results suggest that the barrier height of free energy depends linearly on N and M, which is different from that predicted for the Gaussian chain.
authors.affiliation: Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors.forename: Yongjun
authors.initials: Y
authors.lastname: Xie
authors.forename: Hongtao
authors.initials: H
authors.lastname: Yu
authors.forename: Haiyang
authors.initials: H
authors.lastname: Yang
authors.forename: Qinwei
authors.initials: Q
authors.lastname: Shi
authors.forename: Xingyuan
authors.initials: X
authors.lastname: Zhang
mesh_terms: D001703:Biophysics / Q000379:methods; D009010:Monte Carlo Method; D049329:Nanostructures; D036103:Nanotechnology / Q000379:methods*; D016011:Normal Distribution; D011108:Polymers / Q000737:chemistry*; D021381:Protein Transport; D013816:Thermodynamics; D013997:Time Factors
chemical_list: D011108:Polymers