Insight: What is Brownian Motion?
Brownian Motion is the random movement of particles in a liquid caused by constant collisions with the fast-moving molecules of the containing liquid.
The ZetaView® from Particle Metrix uses this principle to calculate hydrodynamic particle size by analysing short video clips of particles moving in a liquid under Brownian Motion.
The ZetaView® software analyses video clips to calculate the mean square displacement. The Stokes-Einstein equation is then applied to calculate hydrodynamic particle size.