Publication

High efficiency light engine for holographic tomographic volumetric additive manufacturing using phase light modulator (PLM)

2026

Abstract

We present a novel volumetric 3D printing platform using a phase light modulator (PLM) to enhance efficiency in holographic tomographic volumetric additive manufacturing (Holographic TVAM). Unlike traditional amplitude-based systems, PLM-based phase encoding boosts laser power efficiency 70-fold. Combined with speckle reduction, this enables rapid fabrication of complex 3D structures across scales (microns to centimeters) and materials including cell-laden hydrogels (1M cells/mL). We also introduce gelatin Thiol/Norbornene as a printable resin, achieving large-scale prints (~ 3.8 × 3.8 × 4 cm3) in under 2 minutes using a low-power 150 mW UV laser diode. This approach opens new possibilities for scalable, high-resolution light-based 3D printing.

Official source

https://infoscience.epfl.ch/entities/publication/6cefe430-19fd-4bb9-8673-64f14d350add

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2026

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/6cefe430-19fd-4bb9-8673-64f14d350add

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Related concepts (31)

3D printing

3D printing or additive manufacturing is the construction of a three-dimensional object from a CAD model or a digital 3D model. It can be done in a variety of processes in which material is deposited, joined or solidified under computer control, with material being added together (such as plastics, liquids or powder grains being fused), typically layer by layer. In the 1980s, 3D printing techniques were considered suitable only for the production of functional or aesthetic prototypes, and a more appropriate term for it at the time was rapid prototyping.

Semiconductor device fabrication

Semiconductor device fabrication is the process used to manufacture semiconductor devices, typically integrated circuits (ICs) such as computer processors, microcontrollers, and memory chips (such as NAND flash and DRAM) that are present in everyday electrical and electronic devices. It is a multiple-step photolithographic and physio-chemical process (with steps such as thermal oxidation, thin-film deposition, ion-implantation, etching) during which electronic circuits are gradually created on a wafer, typically made of pure single-crystal semiconducting material.

Fused filament fabrication

Fused filament fabrication (FFF), also known as fused deposition modeling (with the trademarked acronym FDM), or filament freeform fabrication, is a 3D printing process that uses a continuous filament of a thermoplastic material. Filament is fed from a large spool through a moving, heated printer extruder head, and is deposited on the growing work. The print head is moved under computer control to define the printed shape.

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High efficiency light engine for holographic tomographic volumetric additive manufacturing using phase light modulator (PLM)

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