Dynamical scaling exponents for polymer translocation through a nanopore
Loading...
Access rights
© 2008 American Physical Society (APS). http://www.aps.org
URL
Journal Title
Journal ISSN
Volume Title
School of Science |
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Unless otherwise stated, all rights belong to the author. You may download, display and print this publication for Your own personal use. Commercial use is prohibited.
Date
2008
Major/Subject
Mcode
Degree programme
Language
en
Pages
050901/1-4
Series
Physical Review E, Volume 78, Issue 5
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 τ∼Nα and the mean-square change of the PT coordinate, ⟨s2(t)⟩∼tβ. We find α=1+2ν and β=2∕α for unbiased PT in two dimensions (2D) and three dimensions (3D). The relation αβ=2 holds for driven PT in 2D, with a crossover from α≈2ν for short chains to α≈1+ν for long chains. This crossover is, however, absent in 3D where α=1.42±0.01 and αβ≈2.2 for N≈40−800.Description
Keywords
polymer translocation, translocation time, scaling exponent
Other note
Citation
Luo, Kaifu & Ollila, Santtu T. T. & Huopaniemi, Ilkka & Ala-Nissilä, Tapio & Pomorski, Pawel & Karttunen, Mikko & Ying, See-Chen & Bhattacharya, Aniket. 2008. Dynamical scaling exponents for polymer translocation through a nanopore. Physical Review E. Volume 78, Issue 5. P. 050901/1-4. ISSN 1539-3755 (printed). DOI: 10.1103/physreve.78.050901.