“…Disordered materials usually exhibit self‐similarity at least within some length scale region, usually in the sub µm range, and in this region the fractal dimension can be determined in various ways such as by, e.g., gas adsorption29–31 and small angle X‐ray scattering 32, 33. Many attempts have also been made to use mercury porosimetry to determine the fractal dimensions on larger length scales 34–38. The self‐similarity often pertains to the surface, and may be interpreted as a surface fractal that sometimes extends into the porous body or mass of the material under study.…”