▎ 摘　　要

NOVELTY - The method involves forming a lower electrode layer on a substrate, a bottom shielding layer and a graphene film. A hydroxide ion oxygen-containing plasma is injected in the graphene film. The graphene film is arranged with a graphene oxide film, where the graphene oxide film is determined as a sensitive material layer. A top isolation layer and an upper electrode layer are formed on a surface of the graphene oxide film. The upper electrode layer and the oxide film are formed as a capacitor structure to form a dual-capacitor structure. The oxide film is selected as an S-type structure. USE - Graphite alkenyl sensor preparing method. DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram illustrating a graphite alkenyl sensor preparing method. '(Drawing includes non-English language text)'