5 papers
Ultrafast Tracking of the Spallation Layer in Bulk Gold, Aluminum, and Steel
Nicolas Thomae, Julian Vollmann, Julian Freundel +3
Extreme manufacturing with ultrashort-pulse (USP) lasers at the physical limit of precision and efficiency requires understanding ablation dynamics on the picosecond-to-nanosecond…
First-principles electronic transport properties of Ti and Ti-6Al-4V for modeling ultrashort-pulse laser ablation
Korbinian Hobmaier, Guillaume E. Allemand, Alberto Marmodoro +4
Predictive modeling of ultrashort-pulse laser ablation requires temperature-dependent material parameters derived from the electronic structure, namely the electronic thermal condu…
Breakdown of spallation in multi-pulse ultrafast laser ablation
David Redka, Julian Vollmann, Nicolas Thomae +2
Ultrashort-pulse laser ablation of metals near damage threshold is governed by homogeneous spallation, in which tensile unloading releases a nanometre-thin liquid film whose optica…
Microparticle laser fragmentation in liquids: mechanisms, energetics, and efficiency quantified with single-pulse, single-particle precision
Maximilian Spellauge, Ramon Auer, Meike Tack +6
Microparticle laser fragmentation in liquids has emerged as a promising approach to generate nanoparticles with high efficiency. Despite its advantages, the underlying fragmentatio…
From surface roughness to crater formation in a 2D multi-scale simulation of ultrashort pulse laser ablation
Nicolas Thomae, Maximilian Stabroth, Julian Vollmann +4
Surface roughness plays a critical role in ultrashort pulse laser ablation, particularly for industrial applications using burst mode operations, multi-pulse laser processing, and…