Patent ID: 7901727

Claim:
Process for manufacturing a porous coating with structures of micro or nano-size domain comprising the following steps: providing a support having a surface, depositing on said surface one mono-layer of temporary particles, depositing a coating on said temporary particles in such a way that the thickness of said coating is less than the particle diameter, eliminating said temporary particles and thereby obtaining a porous coating having pores, the pores of said coating corresponding to the spaces previously occupied by the temporary particles and at least a part of the pores communicating with the external environment, applying a coating fixation step, wherein said temporary particles are deposited on said surface in such a way that, after particle deposition, more than 50% of the temporary particles are in contact with a maximum of two adjacent particles and otherwise are separated from other particles by an empty space, and wherein the process has no etching step after the depositing step.