Phys.org  April 24, 2024 There is an existing model that diamond can be grown using liquid metals only at both high pressure and high temperature. Researchers in South Korea described the growth of diamond crystals and polycrystalline diamond films with no seed particles using liquid metal but at 1 atm pressure and at 1,025 °C. Diamond grew in the subsurface of liquid metal composed of gallium, iron, nickel and silicon, by catalytic activation of methane and diffusion of carbon atoms into and within the subsurface regions. They found that the supersaturation of carbon in the liquid metal subsurface led to the nucleation […]