ANOMALOUS DIFFUSION
Normal, sub-, and superdiffusion — MSD(t) ~ t^α
Lévy exponent (superdiffusion)
β = 1.50
CTRW exponent (subdiffusion)
γ = 0.60
N particles per mode
N = 6
RESET [R]
PAUSE [Space]
Step count
—
MSD normal
—
MSD sub
—
MSD super
—
Normal (α=1)
Subdiffusion (α<1)
Superdiffusion (α>1)
Normal: Gaussian steps. Sub: CTRW with heavy-tailed waiting times ψ(t)~t^(−1−γ). Super: Lévy flights with step distribution P(x)~|x|^(−1−β). Log-log MSD plot reveals power law exponent α.
← back to lab index