▎ 摘　　要

NOVELTY - Non-destructive inspecting graphene, comprises (a) applying a reactive gas (130) on a surface of a metal substrate on which graphene (120) is synthesized, and (b) detecting oxidized region of the metal substrate (110) by the reactive gas. The step (a) is carried out during cooling the metal substrate. USE - The method is useful for non-destructive inspecting graphene (claimed). ADVANTAGE - The method performs inspection without damaging the graphene, shortens processing time, improves productivity and quality of graphene, and is economical. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for graphene non-destructive inspecting device comprising a graphene synthesis unit for synthesizing graphene on a metal substrate, a cooling unit for cooling the metal substrate on which the graphene is synthesized, and graphene defect inspection portion for inspecting nondestructive of graphene. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the non-destructive inspecting method of graphene. Metal substrate (110) Graphene (120) Reactive gas (130)