Epitaxial growth and refined substructures of pure iron, nickel and their alloys after laser treatment

Four-zone solidification microstructure formed by laser melting of copper thin films

“…Such microstructures have been similarly observed in laser melting of silicon-based thin films on SiO 2 but with much smaller grains [18,19]. In pure metals, columnar solidification microstructures are found in well-known solidification processes such as casting in a mold [20], melt spinning [21,22], containerless and fluxed supercooling [23][24][25], and laser surface melting of bulk metals [26]. Nonetheless, the microstructures produced by RLS are unique in metal thin films and have some important differences regarding geometry and heat flow.…”