Soft Matter Physics · undergrad

Osmotic Pressure

Atomic section generated from Complete Soft Matter Physics.

Published Apr 26, 2026 · 1 min

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Solute particles separated by a semipermeable membrane create osmotic pressure. In the dilute limit it has the ideal form

\Pi = c k_B T,

where $c$ is the solute number density.

Atomic section generated from Complete Soft Matter Physics.

Atomic section generated from Complete Soft Matter Physics.

A route through Brownian motion, diffusion, polymers, osmotic pressure, and liquid crystals.