Researchers have grown large area graphene on a eutectic substrate using a Platinum foil with a thin silicon film. When the substrate is heated a liquid platinum silicide layer forms and graphene grow with large crystals and very quickly compared to other CVD growth techniques. The liquid platinum slicide produces a smooth growth surface that hides the polycrystalline structure of the platinum foil. The Nature Communications paper Rapid epitaxy-free graphene synthesis on silicidated polycrystalline platinum
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