。本项目预计利用晶圆级、超平整的石墨烯等二维材料为原料，通过调控目标衬

. This project is expected to use wafer-level, ultra-flat graphene and other two-dimensional materials as raw materials, by adjusting the contact angle between the target substrate and the aqueous solution, and then assisting with rotation and heating technology to achieve an ultra-flat film. The water-capable leveling target substrate is wrinkle-free transfer, that is, "level to level" transfer. On this basis, further stacking wafer-level flat double-layer, multilayer graphene and various types of van der Waals heterojunction; study the corresponding structure and physical properties, and establish the corresponding relationship between structure and physical properties . The development of high-fidelity, wrinkle-free transfer technology, and the construction of large-size, ultra-flat van der Waals homo and heterojunctions are of great significance to the industrial application of two-dimensional materials such as graphene.

。 The project is expected to use wafer-level, ultra-flat graphene and other two-dimensional materials as raw materials, by regulating the contact angle between the target substrate and the water solution, and then assist with rotation, heating technology, to achieve ultra-flat film, with different hydrophobic ability to level the target substrate on the non-fold transfer, that is, "flat to flat" transfer. On this basis, the two-layer, multi-layer graphene and many types of Van der Valls heterogeneity are further stacked out, and the corresponding structure and materiality are studied to establish the correspondence between the structure and materiality. The development of high-fidelity, fold-free transfer technology, as well as the construction of large-size, ultra-flat Van der Waals homogeneity and heterogeneity, is of great significance to the industrial application of two-dimensional materials such as graphene.

. This project is expected to use wafer grade, ultra flat graphene and other two-dimensional materials as raw materials, by adjusting the contact angle between the target substrate and the aqueous solution, and assisted by rotation and heating technology, realize the wrinkle free transfer of ultra flat film on the flat target substrate with different hydrophilic ability, namely "flat to flat" transfer. On this basis, the wafer level flat double-layer, multi-layer graphene and various types of van der Waals heterojunction are further stacked; the corresponding structure and physical properties are studied, and the corresponding relationship between structure and physical properties is established. The development of high fidelity, wrinkle free transfer technology and the construction of large-size, ultra flat van der Waals homojunction and heterojunction are of great significance for the industrial application of graphene and other two-dimensional materials.<br>