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research article

Twist and Stretch of Helices Explained via the Kirchhoff-Love Rod Model of Elastic Filaments

Durickovic, Bojan
•
Goriely, Alain
•
Maddocks, John H.  
2013
Physical Review Letters

In various single-molecule experiments, a chiral polymer, such as DNA, is simultaneously pulled and twisted. We address an elementary but fundamental question raised by various authors: does the molecule overwind or unwind under tension? We show that within the context of the classic Kirchhoff-Love rod model of elastic filaments, both behaviors are possible, depending on the precise constitutive relations of the polymer. More generally, our analysis provides an effective linear response theory for helical structures that relates axial force and axial torque to axial translation and rotation.

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Type
research article
DOI
10.1103/PhysRevLett.111.108103
Web of Science ID

WOS:000324232600032

Author(s)
Durickovic, Bojan
Goriely, Alain
Maddocks, John H.  
Date Issued

2013

Publisher

Amer Physical Soc

Published in
Physical Review Letters
Volume

111

Issue

10

Article Number

108103

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LCVMM  
Available on Infoscience
November 4, 2013
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/96658
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