Pore size / pore-size distribution
Pores have geometry as well as surface chemistry
- Pore size / pore-size distributionThis term
Different openings represent a distribution rather than one universal pore size. Check how the stated size was measured.
- Tortuosity
The actual path is longer and less direct than the layer thickness. Its effect depends on the structure and transport model.
- Knudsen diffusion
The zigzag illustrates molecular interactions with pore walls. Confirm the flow regime instead of applying the mechanism to every vent.
- Oleophobic membrane
The surface resists wetting by specified oils under defined conditions. Hydrophobic water behaviour alone does not establish oil resistance.
A pore network can contain several throat sizes and indirect flow paths. Surface treatment changes wetting, while molecular transport also depends on the scale of the passages.
Enlarged conceptual pore paths, not microscopy or measured pore sizes. Liquid identity, contamination, structure and the applicable transport model must be specified.