Finite-size effects in intracellular microrheology
arXiv:cond-mat/0604129 · doi:10.1063/1.2241190
Abstract
We propose a model to explain finite-size effects in intracellular microrheology observed in experiments. The constrained dynamics of the particles in the intracellular medium, treated as a viscoelastic medium, is described by means of a diffusion equation in which interactions of the particles with the cytoskeleton are modelled by a harmonic force. The model reproduces the observed power-law behavior of the mean-square displacement in which the exponent depends on the ratio between particle-to-cytoskeleton-network sizes.
arXiv comment6 pages 2 figures. To appear in the Journal of Chemical Physics
References in corpus (7)
- Elasticity of Semiflexible Biopolymer Networks
- Microscopic Viscoelasticity: Shear Moduli of Soft Materials Determined from Thermal Fluctuations
- Microrheology, stress fluctuations and active behavior of living cells
- Brownian Dynamics of a Sphere Between Parallel Walls
- Non-exponential relaxation for anomalous diffusion
- Local quasi-equilibrium description of slow relaxation systems
- Memory effects in nonlinear transport: kinetic equations and ratchet devices