Reporters learned from the Chinese Academy of Sciences on March 13 that China's scientific research team has successfully prepared a variety of monoatomic layer metals, whose thickness is only one 200000 times the diameter of the hair. This achievement will greatly promote scientific research in the field of two-dimensional metals and have broad application prospects in areas such as ultra micro low-power transistors and ultra sensitive detection. The relevant research papers have been published in the international academic journal Nature. Two dimensional materials refer to materials with only a single atomic layer or a few atomic layers in thickness. The research on two-dimensional materials has led to a series of significant discoveries in fields such as condensed matter physics and materials science, and is an important frontier area of current international scientific and technological development Du Luojun, the corresponding author of the paper and a distinguished researcher of the Institute of Physics of the Chinese Academy of Sciences, said. It is reported that since the discovery of single-layer graphene in 2004, the family of two-dimensional materials has rapidly expanded, and currently hundreds of two-dimensional materials can be obtained experimentally. However, these two-dimensional materials are currently limited to layered material systems, while most materials, including metals, are non layered materials. Unlike layered materials, each atom in metallic materials has strong metal bond interactions with surrounding atoms in any direction. If layered materials are compared to 'thousand layered cakes', then metal materials are like' compressed biscuits'. Therefore, it is much more difficult to 'reshape' metal materials into two-dimensional materials than layered materials Du Luojun said. In this study, the team melted the metal and used a high-quality single-layer molybdenum disulfide anvil prepared by the team for extrusion, achieving universal preparation of various two-dimensional metals, including bismuth, tin, lead, indium, and gallium. The two-dimensional metal material prepared by the team has achieved a significant increase in lateral dimensions compared to similar materials before, and has good environmental stability. It has no performance degradation in over a year of experimental testing. The reviewer of Nature believes that this achievement will greatly promote scientific research in the field of two-dimensional metals and is a significant progress in the research of two-dimensional materials. Two dimensional metal materials have broad application prospects and are expected to promote technological innovation in fields such as ultra micro low-power transistors, high-frequency devices, transparent displays, ultra sensitive detection, and extremely efficient catalysis Zhang Guangyu, the corresponding author of the paper and a researcher at the Institute of Physics of the Chinese Academy of Sciences, said. (New Society)