Easier sieving through narrower pores: fluctuations and barrier crossing in flow-driven polymer translocation

被引：17
|
作者：
Ledesma-Aguilar, R. [1 ]
Sakaue, T. [2 ,3 ]
Yeomans, J. M. [1 ]
机构：
[1] Univ Oxford, Rudolf Peierls Ctr Theoret Phys, Oxford OX1 3NP, England
[2] Kyushu Univ 33, Dept Phys, Fukuoka 8128581, Japan
[3] JST, PRESTO, Kawaguchi, Saitama 3320012, Japan
来源：
SOFT MATTER | 2012年 / 8卷 / 16期
关键词：
DYNAMICS; DNA; SIMULATION; NANOPORES; TUBES;
D O I：
10.1039/c2sm25201e
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We show that the injection of polymer chains into nanochannels becomes easier as the channel becomes narrower. This counter intuitive result arises because of a decrease in the diffusive time scale of the chains with increasing confinement. The results are obtained by extending the de Gennes blob model of confined polymers, and confirmed by hybrid molecular dynamics-lattice-Boltzmann simulations.
引用
收藏
页码：4306 / 4309
页数：4
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