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Dynamics of polymer translocation through a nanopore induced by different sizes of crowding agents.
- Source :
- Journal of Chemical Physics; May2013, Vol. 138 Issue 20, p204903, 8p, 1 Color Photograph, 7 Graphs
- Publication Year :
- 2013
-
Abstract
- Using both theoretical analysis and Langevin dynamics simulations in two dimensions, we investigate the dynamics of polymer translocation through a nanopore induced by different sizes of the mobile crowding agents, where the crowding agents have equal area fraction [lowercase_phi_synonym] and their diameters are σ and σb >= σ at cis and trans sides, respectively. The chain prefers moving to the side with bigger crowding agents as expected, however, we find the size difference between crowding agents plays a complicated role in the probability of polymer translocation from cis to trans side, the translocation time τ and its distribution, and the translocation exponent. In particular, with increasing σb, the translocation probability shows a maximum value and τ has a minimum value. These results can be interpreted by the effective driving force, which always increases with increasing [lowercase_phi_synonym] but has a maximum value with increasing σb. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219606
- Volume :
- 138
- Issue :
- 20
- Database :
- Complementary Index
- Journal :
- Journal of Chemical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 87925448
- Full Text :
- https://doi.org/10.1063/1.4807088