▎ 摘　　要

NOVELTY - Manufacturing a nanostructure, involves preparing a graphene layer (GP100); forming a block copolymer template layer directly on the graphene layer and a precursor pattern of metal coupled to the block copolymer template layer; and forming a metal nanopattern on the graphene layer by removing the block copolymer template layer and reducing the precursor pattern. USE - For manufacturing a nanostructure which is used in making an optical device i.e. a plasmonic multi-band photodetector (claimed). ADVANTAGE - The method is suitable for manufacturing flexible and stretchable device; and is simple and provides improved productivity. DETAILED DESCRIPTION - Manufacturing a nanostructure, involves preparing a graphene layer, forming a block copolymer template layer directly on the graphene layer and a precursor pattern of metal coupled to the block copolymer template layer, and forming a metal nanopattern on the graphene layer by removing the block copolymer template layer and reducing the precursor pattern; or preparing a graphene layer, forming a block copolymer template layer on the graphene layer, modifying a shape of the block copolymer template layer, forming a precursor pattern of metal coupled to the modified block copolymer template layer, and forming a metal nanopattern on the graphene layer by removing the block copolymer template layer and reducing the precursor pattern; or preparing an underlayer, forming a multi-component block copolymer template layer and a multi-component metal precursor pattern coupled to the multi-component block copolymer template layer on the underlayer, and forming a multi-component metal nanopattern (NP200) on the underlayer by removing the multi-component block copolymer template layer and reducing the multi-component metal precursor pattern. The step of forming the block copolymer template layer directly on the graphene layer includes mixing a block copolymer comprising a hydrophobic first polymer and a hydrophilic second polymer, and a hydrophobic solvent. INDEPENDENT CLAIMS are included for the following: (1) manufacturing an optical device, involving forming a nanostructure including a metal nanopattern on a graphene layer by using the method of making nanostructure, and forming first and second electrodes (E100, E200) contacting the nanostructure; and (2) an optical device comprising a carbon nanomaterial layer, a multi-component metal nanopattern formed on the carbon nanomaterial layer, and first and second electrodes respectively contacting first and second regions of the carbon nanomaterial layer on which the multi-component metal nanopattern is formed. DESCRIPTION OF DRAWING(S) - The figure shows a plan view of a nanostructure and a device (optical device) including the nanostructure. Graphene layer (GP100) First metal element (M100) Second metal element (M200) Multi-component metal nanopattern (NP200) Substrate (SUB100)