▎ 摘　　要

NOVELTY - A surface of a catalytic substrate is subjected to ion injection and catalytic properties of injection area are disrupted. Discrete end injection units are formed at surface of catalytic substrate. The catalytic substrate is provided to growth chamber and heated to predetermined temperature, and carbon source is passed to growth chamber, and discretes are grown to obtain wrinkle-free graphene. USE - Preparation of wrinkle-free graphene (claimed). ADVANTAGE - The method enables preparation of wrinkle-free graphene with high quality, low density, desired shape and excellent device accommodation characteristics.