Sample
Top/middle/bottom layer seed size (nm)
Membrane thickness (μm)
N2 permeance (mol m-2s-1Pa-1)
SF6 Permeance (mol m-2s-1Pa-1)
N2/SF6 Ideal Selectivity
M8 300-300-1500 ⁓ 7 2.05×10-6 1.40×10-8 146.3
M9 60-300-1500 ⁓ 7 1.80×10-6 6.48×10-9 262.5
M10 300-300-300 ⁓ 8 4.20×10-7 2.16×10-9 194.6
M11 60-300-300 ⁓ 10 3.10×10-7 1.14×10-9 270.9
M12 60-60-300 ⁓ 12 2.30×10-7 7.75×10-10 296.8