We are aiming to propose new materials for ultra-thin two-dimensional materials called nanosheets. Nanosheets are characterized by a thickness of about 1 nm and it can be said to be materials consisting only of the surface. Therefore, nanosheets make it increasingly clear that it exhibits new properties structurally-derived properties, and it is expected to be used in various fields. We would like to advance our research from the aspects such as the surface and interface, which are the characteristics of this material, and lead to the creation of new materials and the development of functions.