Xie Yongjun, Yu Hongtao, Yang Haiyang, Shi Qinwei, Zhang Xingyuan
Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
Biochem Biophys Res Commun. 2006 Oct 13;349(1):15-9. doi: 10.1016/j.bbrc.2006.06.198. Epub 2006 Jul 21.
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.
利用具有蒙特卡罗动力学的二维键涨落模型（BFM）模拟了受限聚合物链通过纳米通道的转位过程。研究发现，聚合物链在转位过程中克服自由能垒的捕获时间tautrap分别与链长N和通道长度M呈指数关系。结果表明，自由能的势垒高度与N和M呈线性关系，这与高斯链的预测不同。
