Table 5 The microscale X-ray tomographic imaging acquisition parameters for face masks.

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

Sample

Pixel Size [µm]

Lens

Photon energy [keV]

FOV [µm2]

Detector Binning

Exposure time [s]

Projection no.

Surgical mask

0.35

20X

40

702 × 702

1

25

401

Surgical mask

0.35

20X

40

702 × 702

1

25

1601

Surgical mask

0.35

40X

40

343 × 343

2

60

1601

N95 mask

0.35

20X

40

702 × 702

1

25

1601

N95 mask

0.35

40X

40

343 × 343

2

50

501

Reusable mask

0.35

20X

40

702 × 702

1

35

1601

Reusable mask

0.35

40X

40

343 × 343

2

65

1601

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