CO₂ permeance
—
GPU
O₂ permeance
—
GPU
N₂ permeance
—
GPU
α(CO₂/N₂)
—
selectivity
α(CO₂/O₂)
—
selectivity
α(O₂/N₂)
—
selectivity
Resistance partition — CO₂
Fractional resistance contribution of each layer (stacked bar)
Support
Gutter
Selective
Protective
Defect sensitivity sweep
CO₂ permeance and α(CO₂/N₂) vs. defect area fraction (log scale)
CO₂ permeance
α(CO₂/N₂)
Layer permeance — all gases
Left axis: CO₂ (GPU) · Right axis: O₂ and N₂ (GPU) · Support excluded
CO₂
O₂
N₂
Detailed results table
Per-gas layer permeances and resistance shares
| Gas | Q support (GPU) | Q gutter (GPU) | Q selective (GPU) | Q protective (GPU) | Q stack (GPU) | Q total (GPU) | R support | R gutter | R selective | R protective |
|---|
Q(GPU) = 1000 × P(Barrer) / l(nm) ·
1 / Qstack = 1/Qsup + 1/Qgut + 1/Qsel + 1/Qpro ·
Qtotal = (1−f)·Qstack + f·Qsup