Abstract
We determine the scaling exponents of polymer translocation (PT) through a nanopore by extensive computer simulations of various microscopic models for chain lengths extending up to N=800 in some cases. We focus on the scaling of the average PT time tau similar to N-alpha and the mean-square change of the PT coordinate, < s(2)(t) > similar to t(beta). We find alpha=1+2 nu and beta=2/alpha for unbiased PT in two dimensions (2D) and three dimensions (3D). The relation alpha beta=2 holds for driven PT in 2D, with a crossover from alpha approximate to 2 nu for short chains to alpha approximate to 1+nu for long chains. This crossover is, however, absent in 3D where alpha=1.42 +/- 0.01 and alpha beta approximate to 2.2 for N approximate to 40-800.
Journal Title
Physical Review E
Volume
78
Issue/Number
5
Publication Date
1-1-2008
Document Type
Article
WOS Identifier
ISSN
1539-3755
Recommended Citation
Luo, Kaifu; Ollila, Santtu T. T.; Huopaniemi, Ilkka; Ala-Nissila, Tapio; Pomorski, Pawel; Karttunen, Mikko; Ying, See-Chen; and Bhattacharya, Aniket, "Dynamical scaling exponents for polymer translocation through a nanopore" (2008). Faculty Bibliography 2000s. 661.
https://stars.library.ucf.edu/facultybib2000/661
Comments
Authors: contact us about adding a copy of your work at STARS@ucf.edu