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Abstract: We investigate the influence of polymer-pore interactions on thetranslocation dynamics using Langevin dynamics simulations. An attractiveinteraction can greatly improve translocation probability. At the same time, italso increases translocation time slowly for weak attraction while exponentialdependence is observed for strong attraction. For fixed driving force and chainlength the histogram of translocation time has a transition from Gaussiandistribution to long-tailed distribution with increasing attraction. Under aweak driving force and a strong attractive force, both the translocation timeand the residence time in the pore show a non-monotonic behavior as a functionof the chain length. Our simulations results are in good agreement with recentexperimental data.



Autor: Kaifu Luo, Tapio Ala-Nissila, See-chen Ying, Aniket Bhattacharya

Fuente: https://arxiv.org/







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