High-speed 3D laser printing by two-photon induced chemistry: breaking the centimeter-scale limit
Résumé
We report on the high-speed two-photon fabrication of large 3D objects using a modified commercial laser marking machine based on a multiwatt picosecond laser. Thus, we demonstrate that two-photon chemistry can also be used for macro-scale 3D printing. The whole process has been optimized by an international network including experts in laser applications, diffraction optics, and material photochemistry. As photo-induced processes are intrinsically much faster than thermal-inducedprocesses, we also report that two-photon induced chemistry has the potential to emerge as the fastest 3D laser printing technique for diverse materials such as polymers, ceramics, metals and biomaterials.