Tour de force analysis of NPN/NPN-O pores

Many thanks to JK, Dean and Gunner (Webster HS) for compiling this table. Take homes …

  1. NPN-O has smaller pore sizes, lower porosity than NPN at the same thickness (50 nm).
  2. All materials have slightly asymmetric pores (~ R1/R2 = 0.75).
  3. Top-side and bottom side pore distributions are not the same.
  4. The original NPN material has lower asymmetry than NPN.
  5. NPN-O becomes less asymmetric as it gets thicker.

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