Unforced translocation of a polymer chain through a nanopore: The solvent effect
文献类型：期刊论文
| 作者 | Wei, Dongshan; Yang, Wen; Jin, Xigao; Liao, Qi |
| 刊名 | JOURNAL OF CHEMICAL PHYSICS
 |
| 出版日期 | 2007-05-28 |
| 卷号 | 126期号:20 |
| ISSN号 | 0021-9606 |
| DOI | 10.1063/1.2735627 |
| 英文摘要 | The authors have performed the Langevin dynamics simulation to investigate the unforced polymer translocation through a narrow nanopore in an impermeable membrane. The effects of solvent quality controlled by the attraction strength lambda of the Lennard-Jones cosine potential between polymer beads and beads on two sides of the membrane on the translocation processes are extensively examined. For polymer translocation under the same solvent quality on both sides of the membrane, the two-dimensional and three-dimensional simulations confirm the scaling law of tau(trans)similar to N1+2 nu for the translocation in the good solvent, where tau(trans) is the translocation time, N is the chain length, and nu is the Flory exponent. For the three-dimensional polymer translocation under different solvent qualities on two sides of the membrane, the translocation efficiency may be notably improved. The scaling law between tau(trans) and N varies from tau(trans)similar to N1+2 nu to tau(trans)similar to N with the increase of the difference of solvent qualities, and the crossover occurs at the theta temperature point, where a scaling law of tau(trans)similar to N-1.27 is found. The simulation results here also show that the translocation time changes from a wide and asymmetric distribution with a long tail to a narrow and symmetric distribution with the increase of the difference of the solvent qualities. (C) 2007 American Institute of Physics. |
| 语种 | 英语 |
| WOS记录号 | WOS:000246891700051 |
| 出版者 | AMER INST PHYSICS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/60337]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Liao, Qi |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China 3.Chinese Acad Sci, Inst Chem, Lab Polymer Sci & Mat, Beijing 100080, Peoples R China 4.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wei, Dongshan,Yang, Wen,Jin, Xigao,et al. Unforced translocation of a polymer chain through a nanopore: The solvent effect[J]. JOURNAL OF CHEMICAL PHYSICS,2007,126(20). |
| APA | Wei, Dongshan,Yang, Wen,Jin, Xigao,&Liao, Qi.(2007).Unforced translocation of a polymer chain through a nanopore: The solvent effect.JOURNAL OF CHEMICAL PHYSICS,126(20). |
| MLA | Wei, Dongshan,et al."Unforced translocation of a polymer chain through a nanopore: The solvent effect".JOURNAL OF CHEMICAL PHYSICS 126.20(2007). |
入库方式： OAI收割
来源：化学研究所
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