Fig. 4: Fast diffusion mixing.
From: Spatially and optically tailored 3D printing for highly miniaturized and integrated microfluidics
a Two thin fluid sheets in a narrow vertical channel. b Diffusion time for example molecules over a 15 μm diffusion length in an aqueous solution. D is the diffusion coefficient. Blue = 30 kDa protein, Orange = fluorescein, Green = dissolved gas molecules. c Cross-section scanning electron microscope (SEM) image of narrow 3D printed diffusion mixing channel.
