▎ 摘　　要

NOVELTY - The sensor has a flexible substrate (1), and a reduced graphene oxide layer (2) and a zinc oxide quantum dot layer (3) are attached to the surface of the flexible substrate. The surface of the flexible substrate is etched with a tapered structure. The surface of the flexible substrate is attached to form a reduced graphene oxide layer film, and the zinc oxide quantum dot layer is a scattered layer on the reduced graphene oxide layer. The flexible substrate is made of nylon rope, hemp rope or thread. The zinc oxide quantum dot solution is a mixed solution of anhydrous zinc acetate and potassium hydroxide, and the solvent is anhydrous methanol; anhydrous zinc acetate. USE - Flexible nitrogen dioxide gas sensor. ADVANTAGE - The flexible nitrogen dioxide gas sensor has a good structure flexibility, and has a short response time and recovery time, and high detection accuracy. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the flexible nitrogen dioxide gas sensor preparation method. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the cylindrical nylon rope structure. Flexible substrate (1) Reducing graphene oxide layer (2) Zinc oxide quantum dot layer (3)