TMTPOST -- A Chinese research team has successfully developed a single-atom-thick metal layer, with a thickness just one two-hundred-thousandth the diameter of a human hair, marking the world's first large-scale production of two-dimensional (2D) metal materials. The breakthrough was announced by the research team on Thursday, as reported by the Global Times. This groundbreaking material, developed by researchers at the Institute of Physics (IOP) of the Chinese Academy of Sciences, represents a significant leap in 2D metal research. It has the potential to revolutionize technologies such as ultra-small, low-power transistors and transparent displays, according to the team. "This achievement marks the first successful fabrication of large-area 2D metal materials. Previously, small-scale thin metal layers were highly unstable. For the first time, we have created environmentally stable 2D materials that show no performance degradation even after a year," the team stated in a news release shared with the *Global Times*. The newly developed 2D metals are incredibly thin—just one-millionth the thickness of an A4 sheet of paper and one two-hundred-thousandth the diameter of a human hair. In the scientific community, genuine 2D materials are defined as those with a thickness of one or a few atoms. However, achieving such thinness with metal materials has long been a significant challenge.