Polymer translocation out of confined environments
| Autor: | Luo, Kaifu, Metzler, Ralf, Ala-Nissila, Tapio, Ying, See-Chen |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Physical Review E 80, 021907 (2009) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevE.80.021907 |
| Popis: | We consider the dynamics of polymer translocation out of confined environments. Analytic scaling arguments lead to the prediction that the translocation time scales like $\tau\sim N^{\beta+\nu_{2D}}R^{1+(1-\nu_{2D})/\nu}$ for translocation out of a planar confinement between two walls with separation $R$ into a 3D environment, and $\tau \sim N^{\beta+1}R$ for translocation out of two strips with separation $R$ into a 2D environment. Here, $N$ is the chain length, $\nu$ and $\nu_{2D}$ are the Flory exponents in 3D and 2D, and $\beta$ is the scaling exponent of translocation velocity with $N$, whose value for the present choice of parameters is $\beta \approx 0.8$ based on Langevin dynamics simulations. These scaling exponents improve on earlier predictions. Comment: 5 pages, 5 figures. To appear in Phys. Rev. E |
| Databáze: | arXiv |
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