▎ 摘　　要

NOVELTY - The porous membrane comprises a graphene monolayer (104), an array of colloid particles located on a surface of the graphene monolayer, where the colloid particles are formed sufficient to define a shadow-masked fraction and an unmasked fraction of the surface of the graphene monolayer, a metal film coated on a portion of the unmasked fraction of the surface of the graphene monolayer, and an array of nanoscale pores perforating the graphene monolayer characterized by a uniform pore diameter in a hexagonal arrangement. USE - The porous membrane is useful for separating liquids. ADVANTAGE - The porous membrane has high selectivity and increased structural strength. DETAILED DESCRIPTION - The porous membrane comprises a graphene monolayer (104), an array of colloid particles located on a surface of the graphene monolayer, where the colloid particles are formed sufficient to define a shadow-masked fraction and an unmasked fraction of the surface of the graphene monolayer, a metal film coated on a portion of the unmasked fraction of the surface of the graphene monolayer, and an array of nanoscale pores perforating the graphene monolayer characterized by a uniform pore diameter in a hexagonal arrangement. The array of nanoscale pores is formed when the shadow-masked fraction of the surface of the graphene monolayer is etched upon removal of the array of colloid particles, and is characterized by an average pore diameter of 1 nm to 10 mu m, by a standard deviation in pore diameter of plus minus 10% compared to the average pore diameter and by an average minimum separation, between adjacent pore edges, of 1 nm to 10 mu m. INDEPENDENT CLAIMS are included for: (1) a method for preparing a porous membrane; (2) a system for manufacturing a porous membrane; and (3) a computer-readable storage medium. DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of colloid arrays at graphene monolayers. Graphene monolayer. (104)