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Effects of nanopore size on the flow-induced star polymer translocation

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Abstract.

We study the effects of the nanopore size on the flow-induced capture of the star polymer by a nanopore and the afterward translocation, using a hybrid simulation method that couples point particles into a fluctuating lattice-Boltzmann fluid. Our simulation demonstrates that the optimal forward arm number decreases slowly with the increase of the length of the nanopore. Compared to the minor effect of the length of the nanopore, the optimal forward arm number obviously increases with the increase of the width of the nanopore, which can clarify the current controversial issue for the optimal forward arm number between the theory and experiments. In addition, our results indicate that the critical velocity flux of the star polymer is independent of the nanopore size. Our work bridges the experimental results and the theoretical understanding, which can provide comprehensive insights for the characterization and the purification of the star polymers.

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Authors and Affiliations

  1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China

    Qiaoyue Chen, Mingming Ding, Xiaozheng Duan & Tongfei Shi

  2. Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matter Physics, College of Physical Science and Technology, Yili Normal University, 835000, Yining, China

    Qiaoyue Chen, Lili Zhang & Yineng Huang

  3. National Lab of Solid State Microstructures, School of Physics, Nanjing University, 210093, Nanjing, China

    Lili Zhang & Yineng Huang

Authors
  1. Qiaoyue Chen
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  2. Lili Zhang
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  3. Mingming Ding
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  4. Xiaozheng Duan
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  5. Yineng Huang
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  6. Tongfei Shi
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Correspondence to Mingming Ding.

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Chen, Q., Zhang, L., Ding, M. et al. Effects of nanopore size on the flow-induced star polymer translocation. Eur. Phys. J. E 39, 109 (2016). https://doi.org/10.1140/epje/i2016-16109-3

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  • DOI: https://doi.org/10.1140/epje/i2016-16109-3

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