Dynamics of an anchored polymer molecule under an oscillating force.
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.
Chattopadhyay
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Dipartimento di Fisica G. Galilei, Universitá degli Studi di Padova, via Marzolo 8, 35131 Padua, Italy.
Marenduzzo
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