Stochastic Resonance of a Flexible Chain Crossing over a Barrier

Abstract

We study the stochastic resonance (SR) of a flexible polymer surmounting a bistable-potential barrier. Due to the flexibility that can enhance crossing rate and change chain conformations at the barrier, the SR behaviors manifest many features of an entropic SR of a new kind, such as the power amplification peaks at optimal chain lengths and elastic constants as well as the optimal noise strengths. The pronounced peaks that emerge depending on the chain lengths and conformation states suggest novel means of manipulating biopolymers, such as efficient separation methods, within undulating channels.

arXiv comment13 pages, 9 figures

References in corpus (3)

• Artificial Brownian motors: Controlling transport on the nanoscale
• Entropic Stochastic Resonance
• Non-Markovian Stochastic Resonance

Cited by in corpus (6)

• Active polymer translocation through flickering pores
• Translocation through environments with time dependent mobility
• Thermally activated barrier crossing and stochastic resonance of a flexible polymer chain in a piecewise linear bistable potential
• Weak temporal signals can synchronize and accelerate the transition dynamics of biopolymers under tension
• Noise-created bistability and stochastic resonance of impurities diffusing in a semiconductor layer
• How a single stretched polymer responds coherently to a minute oscillation in fluctuating environments: An entropic stochastic resonance