▎ 摘　　要

NOVELTY - The method involves forming a composite film layer of graphene and silver nano-particles by using an edge-oxidized graphene sheet layer as raw material. An edge region of the graphene sheet layer is modified with oxygen-containing functional groups. The silver nano-particles are enriched in the edge region of the graphene sheet layer through complexation with the oxygen-containing functional groups. External force is applied to the composite film layer to break the composite film layer for obtaining a cross section layer as a graphene-based surface enhanced Raman scattering substrate. The edge region of the graphene sheet layer and the silver nanoparticles are stacked on the cross section layer. USE - Graphene-based surface-enhanced Raman scattering substrate manufacturing method. ADVANTAGE - The method enables manufacturing the graphene-based surface enhanced Raman scattering substrate with high performance and long-term stability at low cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a graphene-based surface-enhanced Raman scattering substrate. DESCRIPTION OF DRAWING(S) - The drawing shows a graph representing relationship between external force and size of edge region of the graphene sheet layer. (Drawing includes non-English language text).