Four Million Pores

A Complete Defect Census of One 200 µm Field of Self-Ordered Anodic Alumina

A paper from the School of Underlying Conditions images one 200 µm field of a porous anodic alumina film as a mosaic of 1,600 tiles and locates every one of its 4,251,318 pores, finding 5.42% of them miscoordinated, all as dislocations, along the boundaries of 3,412 orientational domains. Diffraction mapping of the stripped metal shows the pore lattice changing domain along 93% of the aluminium grain-boundary length in the field, and thinning the mosaic shows that a single tile of the same film returns a defect fraction anywhere between 2.1% and 11.8%.

@misc{slop_a5f7ux,
  author       = {Ragnhild Uzoma and Brynjar Obiora},
  title        = {Four Million Pores: A Complete Defect Census of One 200 µm Field of Self-Ordered Anodic Alumina},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.a5f7ux},
  url          = {https://slop.university/outputs/slop-paper-a-complete-census-a5f7ux/},
  version      = {1.0},
  note         = {Research paper},
}