➀ Scientists at the Chinese Academy of Sciences' Institute of Physics have developed a new method called vdW squeezing to produce 2D metals at the angstrom thickness limit;
➁ The technique involves melting and compressing metals under high pressure between two rigid van der Waals anvils;
➂ This method allows for precise control over the thickness of 2D metals at the atomic level, enabling the exploration of unique layer-dependent characteristics.