Table 3 The absolute permeabilities of reusable, surgical and N95 face masks within the sub-volume domain at Z-axis directions.

From: Microstructure analysis and image-based modelling of face masks for COVID-19 virus protection

Direction

Permeability [µm2]

Reusable FM

Surgical FM

N95 FM

Z-axis

0.37

0.34

0.26

  1. It should be noted that the Z-axis is normal to the mask plane (the Z-axis is the direction......when mask wearer breath air in and out).
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