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Effect of charge distribution on the translocation of an inhomogeneously charged polymer through a nanopore
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10.1063/1.2868777
/content/aip/journal/jcp/128/12/10.1063/1.2868777
http://aip.metastore.ingenta.com/content/aip/journal/jcp/128/12/10.1063/1.2868777
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

A translocating chain composed of segments carrying a single charge of magnitude at the location of the segment from the leading end. The number of translocated segments is denoted by . The electric potential vanishes on the cis side and has a nonzero value, denoted by , on the trans side. The direction of translocation, which coincides with the direction of increasing electric potential, is indicated by the arrow.

Image of FIG. 2.
FIG. 2.

Rescaled translocation time as a function of the charge position expressed as a fraction of the chain length, , for ideal chains of several lengths with , , and . Also shown for comparison is the translocation time obtained in the continuous limit of the chain.

Image of FIG. 3.
FIG. 3.

Rescaled translocation time as a function of the fractional charge position for an ideal chain of segments at and , with (solid line), (dashed line), and (dashed-dotted line).

Image of FIG. 4.
FIG. 4.

Minimum value of the rescaled translocation time as a function of with and for an ideal chain (solid line), a self-avoiding chain (dashed line), and a rodlike chain (dashed-dotted line), each of segments.

Image of FIG. 5.
FIG. 5.

Rescaled translocation time as a function of the fractional charge position for several values of at and for (a) an ideal chain, (b) a self-avoiding chain, and (c) a rodlike chain, each possessing segments.

Image of FIG. 6.
FIG. 6.

Rescaled translocation time as a function of the fractional charge position for several values of and with and for an ideal chain of segments. Also shown for comparison is the corresponding result at and .

Image of FIG. 7.
FIG. 7.

(a) Minimum value of the rescaled translocation time and (b) the fractional charge position at which the translocation time is minimum as a function of at and for an ideal chain (solid line), a self-avoiding chain (dashed line), and a rodlike chain (dashed-dotted line) of segments each.

Image of FIG. 8.
FIG. 8.

Rescaled translocation time as a function of the distance between the two charges expressed as a fraction of the chain length, , for several values of at (a) and (b) for an ideal chain of segments.

Image of FIG. 9.
FIG. 9.

Rescaled translocation time as a function of with and at several values of for an ideal chain of segments.

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/content/aip/journal/jcp/128/12/10.1063/1.2868777
2008-03-27
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effect of charge distribution on the translocation of an inhomogeneously charged polymer through a nanopore
http://aip.metastore.ingenta.com/content/aip/journal/jcp/128/12/10.1063/1.2868777
10.1063/1.2868777
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