Dynamics of anchored polymers under an oscillating force

A.K. Chattopadhyay, D. Marenduzzo

Research output: Contribution to journalArticle

Abstract

We study the dynamics of a polymer of varying stiffness, pinned or grafted at both ends and subjected to an oscillatory forcing at an intermediate point. Via stochastic simulations, we find a crossover from a periodic limit cycle to an aperiodic dynamics as the polymer gets "stiffer." An analytical argument valid in the 2D grafted case shows that in such a case this aperiodic dynamics has some chaotic signatures. © 2007 The American Physical Society.
Original languageEnglish
Article number088101
Number of pages4
JournalPhysical Review Letters
Volume98
Issue number8
DOIs
Publication statusPublished - 20 Feb 2007

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polymers
stiffness
crossovers
signatures
cycles
simulation

Keywords

  • atomic physics
  • computer simulation
  • molecular dynamics
  • oscillators (mechanical)
  • random processes
  • stiffness
  • anchored polymer molecule
  • chaotic signatures
  • oscillatory forcing
  • stochastic simulations
  • organic polymers

Cite this

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Dynamics of anchored polymers under an oscillating force. / Chattopadhyay, A.K.; Marenduzzo, D.

In: Physical Review Letters, Vol. 98, No. 8, 088101, 20.02.2007.

Research output: Contribution to journalArticle

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AB - We study the dynamics of a polymer of varying stiffness, pinned or grafted at both ends and subjected to an oscillatory forcing at an intermediate point. Via stochastic simulations, we find a crossover from a periodic limit cycle to an aperiodic dynamics as the polymer gets "stiffer." An analytical argument valid in the 2D grafted case shows that in such a case this aperiodic dynamics has some chaotic signatures. © 2007 The American Physical Society.

KW - atomic physics

KW - computer simulation

KW - molecular dynamics

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KW - random processes

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KW - anchored polymer molecule

KW - chaotic signatures

KW - oscillatory forcing

KW - stochastic simulations

KW - organic polymers

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