Stepwise conformation transitions for a semi-stiff ring polymer confined in a conical trap induced by the increasing external field or by cone's opening angle variation

A. Siretskiy, C. Elvingson, P. Vorontsov-Velyaminov

Research output

Abstract

In this paper a stepwise compaction process of a ring semi-stiff polymer chain placed in a 3d conical nano-cavity and being under the action of the increasing external field is studied. Compaction from a circlelike shape to several toroidal-like loops for a three-dimensional system was observed. The thermodynamic stability of these toroidal-like structures was investigated by observing a hysteresis of the compactionextension curves. This study extends our previous work [1] with investigation of the effect of the cone opening angle variation on the distinct shape transitions.
Original languageEnglish
Pages (from-to)225–235
JournalNanosystems: Physics, Chemistry, Mathematics
Volume4
Issue number2
Publication statusPublished - 2013

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cones
hysteresis
traps
cavities
rings
polymers

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title = "Stepwise conformation transitions for a semi-stiff ring polymer confined in a conical trap induced by the increasing external field or by cone's opening angle variation",
abstract = "In this paper a stepwise compaction process of a ring semi-stiff polymer chain placed in a 3d conical nano-cavity and being under the action of the increasing external field is studied. Compaction from a circlelike shape to several toroidal-like loops for a three-dimensional system was observed. The thermodynamic stability of these toroidal-like structures was investigated by observing a hysteresis of the compactionextension curves. This study extends our previous work [1] with investigation of the effect of the cone opening angle variation on the distinct shape transitions.",
keywords = "semi-stiff ring polymers, Monte Carlo, compact structures, shape transitions, confinement, nanocone",
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T1 - Stepwise conformation transitions for a semi-stiff ring polymer confined in a conical trap induced by the increasing external field or by cone's opening angle variation

AU - Siretskiy, A.

AU - Elvingson, C.

AU - Vorontsov-Velyaminov, P.

PY - 2013

Y1 - 2013

N2 - In this paper a stepwise compaction process of a ring semi-stiff polymer chain placed in a 3d conical nano-cavity and being under the action of the increasing external field is studied. Compaction from a circlelike shape to several toroidal-like loops for a three-dimensional system was observed. The thermodynamic stability of these toroidal-like structures was investigated by observing a hysteresis of the compactionextension curves. This study extends our previous work [1] with investigation of the effect of the cone opening angle variation on the distinct shape transitions.

AB - In this paper a stepwise compaction process of a ring semi-stiff polymer chain placed in a 3d conical nano-cavity and being under the action of the increasing external field is studied. Compaction from a circlelike shape to several toroidal-like loops for a three-dimensional system was observed. The thermodynamic stability of these toroidal-like structures was investigated by observing a hysteresis of the compactionextension curves. This study extends our previous work [1] with investigation of the effect of the cone opening angle variation on the distinct shape transitions.

KW - semi-stiff ring polymers

KW - Monte Carlo

KW - compact structures

KW - shape transitions

KW - confinement

KW - nanocone

M3 - Article

VL - 4

SP - 225

EP - 235

JO - Nanosystems: Physics, Chemistry, Mathematics

JF - Nanosystems: Physics, Chemistry, Mathematics

SN - 2220-8054

IS - 2

ER -