Goldene is a layer of gold a single atom thick. It doesn't look very … goldy?… but it's a major achievement of materials science. Shun Kashiwaya and others: The synthesis…
Goldene is a layer of gold a single atom thick. It doesn't look very … goldy?… but it's a major achievement of materials science. Shun Kashiwaya and others: The synthesis of monolayer gold has so far been limited to free-standing several-atoms-thick layers, or monolayers confined on or inside templates. Here we report the exfoliation of single-atom-thick gold achieved through wet-chemically etching away Ti 3 C 2 from nanolaminated Ti 3 AuC 2 , initially formed by substituting Si in Ti 3 SiC 2 with Au. Ti 3 SiC 2 is a renown MAX phase, where M is a transition metal, A is a group A element, and X is C or N. Our developed synthetic route is by a facile, scalable and hydrofluoric acid-free method. The…