Would it make any sense to try and deposit graphene directly onto the copper by CVD methods (usually done for thin copper on silicon, or for copper foils)? (If your copper substrate can be heated). The surface finish, grain size and purity of the copper may impact the results.

Dear Dr. James Andrew Whitby

Thank you very much for your answer. If I heat the copper surface to 150 degree centigrade after coating, what is the possibility that the coating will not come out of the surface?

Well, graphene formation by CVD on a copper catalyst takes place at about 900 C. I think that at 150C no oxidation of the graphene will take place, so you should be fine (if this process is plausible - I am not an expert so there may be other reasons why this won't work). Do you want a continuous covering of graphene, or un-connected nanoscale domains?

Dear Dr. James Andrew Whitby

Many thanks for your answer. I want separate nano particles on the surface instead of continuous covering. I will try it and see how it works.