1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Simulation on the translocation of polymer through compound channels
Rent:
Rent this article for
USD
10.1063/1.4789019
/content/aip/journal/jcp/138/4/10.1063/1.4789019
http://aip.metastore.ingenta.com/content/aip/journal/jcp/138/4/10.1063/1.4789019
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

A 2D sketch of the compound channel and the polymer model used in the simulation. The compound channel with length L p is consisted of two parts: part α with length L and part β with length L (=L pL ). Along the channel (the x direction), an external electrical field with strength E is applied inside the channel.

Image of FIG. 2.
FIG. 2.

The dependence of the translocation time τ on ɛβ for different L s (a) and that on L for different ɛβ s (b). Here, the chain length n = 80 and the electrical field E = 0.1.

Image of FIG. 3.
FIG. 3.

The dependence of the filling time τ1 on L for different ɛβ s. Here, the chain length n = 80 and the electrical field E = 0.1.

Image of FIG. 4.
FIG. 4.

Free energy F as a function of the head segment position x inside the channel for different L s, where the channel length L p = 60, the electrical field E = 0.1, the chain length n = 80, and the interaction energy between segment and β channel is ɛβ = 0, respectively. and are the place of the free-energy maximum before and after L , respectively. ΔF 1 and ΔF 2 are two free-energy barriers for the translocation of the L = 25 case as an example.

Image of FIG. 5.
FIG. 5.

The dependence of the two free-energy barriers ΔF 1 and ΔF 2 on L , where the electrical field E = 0.1, the chain length n = 80, and the interaction energy between segment and β channel is ɛβ = 0, 0.4, and 1, respectively. The intersection point at is presented for ɛβ = 0. Dotted curve with a shifted value −1 in the vertical axis shows F well for ɛβ = 1.

Image of FIG. 6.
FIG. 6.

The dependence of τtrap on L for different ɛβ s and different chain lengths n, where the electrical field E = 0.1. indicates the position of the peak of τtrap. The straight dash lines are fits of τtrap = exp (kL + b) for L close to .

Image of FIG. 7.
FIG. 7.

The dependence of products on ɛβ for polymer of length n = 80 at different driving forces. The inset gives the linear dependence of on ɛβ. The straight line with the slope −0.34 is the best fit for the simulation data.

Image of FIG. 8.
FIG. 8.

The dependence of the translocation probability P on L for different chain lengths n and interactions ɛβ at E = 0.1. Here P 0 represents the translocation probability for L = L p.

Loading

Article metrics loading...

/content/aip/journal/jcp/138/4/10.1063/1.4789019
2013-01-28
2014-04-20
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Simulation on the translocation of polymer through compound channels
http://aip.metastore.ingenta.com/content/aip/journal/jcp/138/4/10.1063/1.4789019
10.1063/1.4789019
SEARCH_EXPAND_ITEM