1. Example: Micromixer

2. Micromixer
Purpose of the mixer
Mix the solutes in two streams with no moving parts
It should be cheap and easy to fabricate
It works through lamination of the streams and the mixing is obtained through diffusion. This implies that the mixing effect is obtained through decreased diffusion length.

3. Micromixing device Micromixer - Geometry outlet inlet multilamination

4. Problem definition Micromixer - Geometry Navier-Stokes
Diffusion-convection
Unit cell

5. Flow and concentration distribution
Micromixer - Results
Flow and concentration distribution
Mixing through diffusion perpendicular to the flow