Lawrence Livermore National Laboratory
Livermore, CA · US · publishing in AM since 2014
LPBF physics — keyhole dynamics, vapour plumes, and defect formation
Manyalibo "Ibo" Matthews leads metal AM physics research at Lawrence Livermore National Laboratory and is one of the most prolific authors on LPBF process physics. His group at LLNL produced the high-speed imaging and X-ray diagnostic studies that established the relationship between laser–material interaction, vapour-depression depth, and keyhole pore formation — work that underpins much of the modern community's understanding of LPBF defect mechanisms. He has also contributed to studies of denudation zones, melt-pool oscillation modes, and spatter ejection, often in collaboration with the Argonne APS team. Matthews has been a key contributor to the LLNL Accelerated Certification of AM Metals programme and to physics-based melt-pool model development.
Last reviewed: 2026-05-16 · Sources: 2
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