Temperature (K): 300 Particle radius (nm): 10 Particles: 30

Fluid viscosity (Pa·s):

η =0.001 Pa·s

D (nm²/μs)—

MSD at t=1s (nm²)—

RMS displacement—

Step σ (nm/step)—

FluidWater

Einstein-Smoluchowski
D = k_BT / (6πηr)
MSD = 4Dt (2D), MSD = 6Dt (3D)
Smaller particles & higher temperature → faster diffusion.

Particle Trajectories

MSD vs Time