Andrea Paolo Loffredo Senesi
E-beam and Laser Structured Titanium Surfaces: Preparation and Characterization for Their Use as Implant Materials.
Rel. Silvia Spriano, Sara Ferraris, Fernando Gustavo Warchomicka. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Biomedica, 2026
Abstract
Titanium and its alloys are widely used for biomedical implants and their long term performance is often set by the first events at the interface, most notably protein adsorption, which is strongly shaped by surface chemistry, wettability, and topography across multiple length scales. This thesis investigates surface structuring routes that are reproducible and suitable for clinically relevant titanium alloys, with the aim of tuning these early interfacial cues while keeping roughness at levels that do not promote bacterial proliferation. Electron beam (EB) surface structuring and ultrafast laser processing are used to generate groove-like patterns on Titanium Grade 2 (TiGr2), Ti-17, Ti-12Mo, and Ti-18Mo.
EB structuring is optimized by varying accelerating voltage, beam current, and the number of passes to obtain uniform grooves with a target width of about 10 µm, while tracking oxidation and microstructural changes associated with rapid melt–solidification cycles
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