▎ 摘　　要

NOVELTY - The method involves forming a graphene thin film (210) on the copper substrate (220). A photo-mask (230) on which several pores having diameter of 1-10 mu m are formed in a predetermined pattern is coated on the graphene thin film. The laser beam is irradiated onto the photo-mask for forming the pores of predetermined pattern on graphene thin film. USE - Method for producing membrane (claimed) for hemodialysis. ADVANTAGE - The hemodialysis membrane having thin layer is provided, so that the separation efficiency is high and the filtration accuracy is high due to the pores formed in a uniform pattern. The hemodialysis membrane composed of graphene having high physical and chemical stability and biostability, is provided. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view illustrating the process for producing membrane for hemodialysis. (Drawing includes non-English language text) Graphene thin film (210) Copper substrate (220) Photo-mask (230) Glass/silicon wafer (240)