Translocation of Polymer Chains Through a Channel with Complex Geometries
Translocation of Polymer Chains Through a Channel with Complex Geometries作者机构：Department of Physics Wenzhou University Wenzhou 325027 China
出 版 物：《Chinese Journal of Chemical Physics》 (化学物理学报（英文）)
年 卷 期：2008年第21卷第6期
页 面：555-559页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学]
基 金：ACKNOWLEDGMENTS This work was supported by the National Natural Science Foundation of China (No.20574052 and No.20774066) the Program for New Century Excellent Talents in University (NCET-05-0538) and the Natural Science Foundation of Zhejiang Province (No.R404047)
主 题：Elastic behavior nPERMis Polymer translocation
摘 要：The elastic behavior of a single chain transporting through complex channel which can be seen as the combination of three different channels （left channel, middle channel, and right channel, respectively） is investigated using the new pruned-enriched Rosenbluth method with importance sampling. The elastic force during the translocation process is calculated. At the entrance into the middle channel, there is the first plateau in the curve of the elastic force f （f〉0） versus x, here x represents the position of the first monomer along the x-axis direction. When the first monomer moves to a certain position, a second plateau is observed with the elastic force f〈0, which represents spontaneous translocation. The free energy difference between the subchain in the right channel and the subchain in the left channel may drive the transloeation. The influence of chain length and width of the left and right channels on the translocation process are also investigated. From the simulation results, more detailed explanations for the reason why the component translocation time is not the same for different channels can be presented.
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