▎ 摘　　要

NOVELTY - Manufacturing a graphene sheet, involves growing a graphene sheet on a graphene growth support by applying carbon sources and heat to the graphene growth support, the graphene growth support comprising a carbonization catalyst; and forming at least one ripple on the graphene sheet by cooling at least one of the graphene growth support and the graphene sheet, where the graphene growth support has a thermal expansion coefficient which is different from a thermal expansion coefficient of the graphene sheet. USE - As an electrode material (claimed) of various electrical and electronic devices such as a next-generation field effect transistor (FET), diode, or in various devices such as a high-end sensor such as pixels of display, bio tape, surgery gloves, surface sensor of multi joint robot, and hemispherical optoelectronic device. ADVANTAGE - The ripples facilitate deformation-capability. The ripple formed on the graphene sheet prevents the electrical resistance value of the graphene sheet from increasing, or reduces the degree of increase. When the profile that repeatedly rises and falls is provided to a graphene sheet together with ripples, the ripples may cope with an external force applied to the graphene sheet through folding or unfolding, and the profile that repeatedly rises and falls may also cope with the external force through folding or unfolding. Accordingly, the ability of preventing or suppressing an occurrence of a mechanical failure such as a crack or a fracture may be increased. As a result, the ability of preventing or suppressing a change in the electrical properties of the graphene sheet may be increased. In spite of external deformation, the performance of a device using the graphene may be maintained by preventing or reducing a change in resistance. This deformation-capable graphene sheet or deformation-capable material may be compressed or stretched in one direction, in both directions, or in all directions so as to be used. In this case, the conductor-semiconductor property may be controlled. Since the resistance of graphene compressed in at least two directions is seldom changed when the graphene is folded or bent, the graphene may be used as a material used to form the electrode of a flexible electronic device that requires mechanical deformation such as folding and stretching. The deformation-capable graphene sheet or deformation-capable material may control resistance according to a stretching degree. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) graphene sheet (s1) grown on a graphene growth support comprising a carbonization catalyst, the graphene sheet comprising at least one ripple, where the ripple is formed using at least a difference between a thermal expansion coefficient of the graphene growth support and a thermal expansion coefficient of the graphene sheet; (2) graphene sheet unit comprising the graphene sheet (s1); and an elastic body contacting the graphene sheet, where the graphene sheet comprises a profile that repeatedly rises and falls; (3) device including a graphene sheet grown on a graphene growth support comprising a carbonization catalyst, where at least one ripple is formed on the graphene sheet, and the ripple is formed using a difference between a thermal expansion coefficient of the graphene growth support and a thermal expansion coefficient of the graphene sheet; (4) graphene sheet support unit comprising a graphene sheet comprising at least one graphene layer, on which at least one ripple is formed; and a graphene growth support on which the graphene sheet grows.