“…The spontaneously emerging structure can be improved with the help of more [ 3 ] or less [ 4 , 5 ] complex techniques, which also make it possible to form PAFs with unusual morphology [ 6 ]. Thanks to its “technological plasticity” and the relative simplicity of formation, porous alumina is a promising material for a wide range of applications, such as an electronic product elemental base [ 7 , 8 , 9 , 10 , 11 ], or in various types of sensors and detectors [ 12 , 13 , 14 , 15 , 16 ]. A currently rapidly developing field is the creation of nanoscale structures and composite materials using porous anodic aluminum oxide as a highly ordered nanostructured matrix for the formation of various kinds of functional materials and devices [ 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ], including nanostructures such as carbon nanotubes, nanodiamonds, and graphene [ 27 , 28 , 29 ].…”