Patent ID: 8623466

Claim:
A method for producing an oriented-porosity dielectric material on a substrate, the method comprising: a) depositing a composite layer on a substrate by a vapor phase deposition, wherein the composite layer comprises a material forming a matrix and a compound comprising at least one chemical group capable of being oriented under the effect of an electric voltage and a photonic radiation, wherein the material forming a matrix is a dielectric material and the compound comprising the at least one chemical group capable of being oriented under the effect of an electric voltage and a photonic radiation is a decomposable pore-forming compound; b) treating the composite layer to cross-link the material, thereby forming the matrix; said method further comprising c) subjecting said substrate coated with said composite layer to an electric voltage and a photonic radiation, wherein said subjecting c) is carried out so as to align the chemical groups of the deposited composite layer in a predetermined direction, and d) treating the composite layer to obtain a decomposition of the pore-forming compound, thereby extracting the pore-forming compound.