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Effect of Interaction upon Translocation of Confined Polymer Chain Through Nanopore |
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| Authors: | Yao Wang Yong-jun Xie Hai-yang Yang and Xing-yuan Zhang |
| Institution: | Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China;Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China;Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China;Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China |
| Abstract: | The effect of the interaction between nanopore and chain monomer on the translocation of a single polymer chain confined in a finite size square through an interacting nanopore to a large space has been studied by two-dimensional bond fluctuation model with Monte Carlo simulation. Results indicate that the free energy barrier before the successful translocation of the chain depends linearly on the chain length as well as the nanopore length for different pore-polymer interaction, and the attractive interaction reduces the free energy barrier, leading to the reduction of the average trapping time. |
| Keywords: | Monte Carlo simulation Polymer translocation Interaction Free energy barrier |
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