2024/02/09 by Felix Wechsler, Carlo Gigli, Wechsler, Felix +5 · 3 citations
Engineering · #Additive Manufacturing and 3D Printing Technologies #Engineering Technology and Methodologies #FOS: Physical sciences #Manufacturing Process and Optimization #Optics (physics.optics)
paper · pdf · doi:10.48550/arxiv.2402.06283
openalex publication_date 2024/02/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Tomographic Volumetric Additive Manufacturing (TVAM) allows printing of mesoscopic objects within seconds or minutes. Tomographic patterns are illuminated onto a rotating glass vial which contains a photosensitive resin. Current pattern optimization is based on a ray optical assumption which ultimately leads to limited resolution around 20μ\textrmm and varying throughout the volume of the 3D object. In this work, we introduce a rigorous wave-based optical amplitude optimization scheme for TVAM which shows that high-resolution printing is theoretically possible over the full volume. The wave optical optimization approach is based on an efficient angular spectrum method of plane waves with custom written memory efficient gradients and allows for optimization of realistic volumes for TVAM such as (100μ\textrmm)3 or (10\textrmmm)3 with 5503 voxels and 600 angles. Our simulations show that ray-optics start to produce artifacts when the desired features are 20μ\textrmm and below and more importantly, the amplitude modulated TVAM can reach micrometer features when optimizing the patterns using a full wave model.