Translocation of polymer through nanopore:dissipative particle dynamics simulation

来源 :Chinese Science Bulletin | 被引量 : 0次 | 上传用户:erywwb
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Dissipative particle dynamics simulations are performed to study the forced translocation of polymer through a nanopore inside which the polymer experiences a driving force F.Hydrodynamic interaction(HI) is taken into account for the polymer in good solvent.We find that the mean translocation time<τ>scales with the polymer length N as<τ>~Nx with a = 1.26 ± 0.03 close to a theoretical prediction,and the probability distribution of s can be described by a Gaussian function.Our results show that the dynamics of polymer translocation with the HI is different from that without the HI.However,the exponent d in the scaling<τ>~δ F-dis found not to be affected by the HI effect. Dissipative particle dynamics simulations are performed to study the forced translocation of polymer through a nanopore inside which the polymer experiences a driving force F. Hydrodynamic interaction (HI) is taken into account for the polymer in good solvent. We find that the mean translocation time < τ> scales with the polymer length N as <τ> ~ Nx with a = 1.26 ± 0.03 close to a theoretical prediction, and the probability distribution of s can be described by a Gaussian function. Here results show that the dynamics of polymer translocation with the HI is different from that without the HI. However, the exponent d in the scaling <τ> ~ δ F-dis found not to be affected by the HI effect.
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