Dynamic Fluctuations of Semiflexible Polymers
arXiv:cond-mat/9808010 · doi:10.1103/PhysRevLett.82.3717
Abstract
We develop a scaling theory to describe dynamic fluctuations of a semiflexible polymer and find several distinct regimes. We performed simulations to characterize the longitudinal and transverse dynamics; using ensemble averaging for a range of different degrees of coarse-graining we avoid the problems of slow equilibration often encountered in simulations. We find that the longitudinal fluctuations of a semiflexible object scales as t^7/8. These fluctuations are correlated over a length which varies as t^1/8. Our results are pertinent to the interpretation of high frequency microrheology experiments in actin solutions.
7 pages 3 figures revtex source
Cited by in corpus (41)
- Modeling semiflexible polymer networks
- Distinct regimes of elastic response and deformation modes of cross-linked cytoskeletal and semiflexible polymer networks
- Broken detailed balance and non-equilibrium dynamics in living systems
- The response function of a sphere in a viscoelastic two-fluid medium
- Two-point microrheology and the electrostatic analogy
- A versatile framework for simulating the dynamic mechanical structure of cytoskeletal networks
- Characteristic time and length scales in melts of Kremer-Grest bead-spring polymers with wormlike bending stiffness
- Viscoelasticity of Dilute Solutions of Semiflexible Polymers
- Tension dynamics in semiflexible polymers. Part I: Coarse-grained equations of motion
- Propagation and Relaxation of Tension in Stiff Polymers
- Dynamics of Semiflexible Polymers in a Flow Field
- Raft Instability of Biopolymer Gels
- Tension dynamics in semiflexible polymers. Part II: Scaling solutions and applications
- Anomalous fluctuations of active polar filaments
- DNA uptake into nuclei: Numerical and analytical results
- Tension dynamics and viscoelasticity of extensible wormlike chains
- Stretching dynamics of semiflexible polymers
- Global cross-over dynamics of single semiflexible polymers
- Monomer dynamics of a wormlike chain
- Fluorescence Correlation Spectroscopy analysis of segmental dynamics in Actin filaments
- A freely relaxing polymer remembers how it was straightened
- Frenet algorithm for simulations of fluctuating continuous elastic filaments
- Semiflexible Polymer Dynamics with a Bead-Spring Model
- Longitudinal Response of Confined Semiflexible Polymers
- Semiflexible polymers under external fields confined to two dimensions
- Strand diffusion-limited closure of denaturation bubbles in DNA
- Twist and writhe dynamics of stiff filaments
- Coupling of transverse and longitudinal response in stiff polymers
- A Brownian dynamics algorithm for entangled wormlike threads
- Kinetics of rare events for non-Markovian stationary processes and application to polymer dynamics
- Tension Dynamics and Linear Viscoelastic Behavior of a Single Semiflexible Polymer Chain
- Overdamped Stress Relaxation in Buckled Rods
- Wall-anchored semiflexible polymer under large amplitude oscillatory shear flow
- Micro-mechanical response and power-law exponents from the longitudinal fluctuations of F-actin solutions
- Single-molecule stretching experiments of flexible (wormlike) chain molecules in different ensembles: Theory and a potential application of finite chain length effects to nick-counting in DNA
- A symplectic integration method for elastic filaments
- Thermal Schwinger Effect: Defect Production in Compressed Filament Bundles
- Bending-Rotation coupling in the viscoelasticity of semiflexible polymers -- Rigorous perturbation analysis from the rod limit
- Dynamics of undulatory fluctuations of semiflexible filaments in a network
- Self-attractive semiflexible polymers under an external force field
- Thermal Fluctuations of Anisotropic Semiflexible Polymers