Ultrafast laser-induced topochemistry on metallic glass surfaces

Mathilde Prudent, Alejandro Borroto, Florent Bourquard, Stéphanie Bruyère, Sylvie Migot, Florence Garrelie, Jean-François Pierson, Jean-Philippe Colombier

Abstract: Highlights•3 metallic glass thin films have been produced through PVD for irradiation by ultrafast laser•Ultrafast laser irradiation in air significantly alters the surface chemistry of amorphous alloys on 200 nm thickness•Laser-induced periodic energy confinement generates crystalline nanoparticles, tens of nanometers in size, on the crests of LIPSS•Air-induced reactions causes the most reactive metal to oxidize to its highest valence state, segregating the metallic components at the surface•Crystalline phases grow on top of amorphous thin films potentially enhancing reactivity, catalysis, and offering antibacterial opportunities

External IDs:doi:10.1016/j.matdes.2024.113164