Joseph Toombs
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View article: Intensity-coupled multi-beam phase retrieval for holographic volumetric additive manufacturing
Intensity-coupled multi-beam phase retrieval for holographic volumetric additive manufacturing Open
Multi-beam holographic projection is a promising yet underexplored avenue for advanced volumetric additive manufacturing (VAM) systems to control image focus in 3D, compensate for aberrations, and overcome resolution anisotropy. Neverthele…
View article: Computed axial lithography optimization system
Computed axial lithography optimization system Open
A system for determining a light intensity field for use in manufacturing a 3D object from a volume of material. The system receives a 3D specification of a 3D geometry for the 3D object that specifies voxels within the volume that contain…
View article: Roll-to-roll tomographic volumetric additive manufacturing
Roll-to-roll tomographic volumetric additive manufacturing Open
Additive manufacturing (AM) has revolutionized the fabrication of devices with precisely controlled optical, fluidic, mechanical, and filtering properties, offering greater design freedom than conventional manufacturing methods. Tomographi…
View article: Multi-beam phase mask optimization for holographic volumetric additive manufacturing
Multi-beam phase mask optimization for holographic volumetric additive manufacturing Open
The capability of holography to project three-dimensional (3D) images and correct for aberrations offers much potential to enhance optical control in light-based 3D printing. Notably, multi-beam multi-wavelength holographic systems represe…
View article: Tomographic projection optimization for volumetric additive manufacturing with general band constraint Lp-norm minimization
Tomographic projection optimization for volumetric additive manufacturing with general band constraint Lp-norm minimization Open
Tomographic volumetric additive manufacturing is a rapidly growing fabrication technology that enables rapid production of 3D objects through a single build step. In this process, the design of projections directly impacts geometric resolu…
View article: Volumetric Printing of Thiol‐Ene Photo‐Cross‐Linkable Poly(ε‐caprolactone): A Tunable Material Platform Serving Biomedical Applications (Adv. Mater. 19/2023)
Volumetric Printing of Thiol‐Ene Photo‐Cross‐Linkable Poly(ε‐caprolactone): A Tunable Material Platform Serving Biomedical Applications (Adv. Mater. 19/2023) Open
Volumetric 3D Printing In volumetric 3D printing, the whole 3D object is developed simultaneously (i.e., volume-at-once) by means of light-induced crosslinking of a (rotating) liquid resin, as reported by Sandra Van Vlierberghe and co-work…
View article: Volumetric Printing of Thiol‐Ene Photo‐Cross‐Linkable Poly(ε‐caprolactone): A Tunable Material Platform Serving Biomedical Applications
Volumetric Printing of Thiol‐Ene Photo‐Cross‐Linkable Poly(ε‐caprolactone): A Tunable Material Platform Serving Biomedical Applications Open
Current thoroughly described biodegradable and cross‐linkable polymers mainly rely on acrylate cross‐linking. However, despite the swift cross‐linking kinetics of acrylates, the concomitant brittleness of the resulting materials limits the…
View article: Ethyl cellulose-based thermoreversible organogel photoresist for sedimentation-free volumetric additive manufacturing
Ethyl cellulose-based thermoreversible organogel photoresist for sedimentation-free volumetric additive manufacturing Open
Liquid photoresists are abundant in the field of light-based additive manufacturing (AM). However, printing unsupported directly into a vat of material in emerging volumetric AM technologies$-$typically a benefit due to fewer geometric con…
View article: Volumetric additive manufacturing of silica glass with microscale computed axial lithography
Volumetric additive manufacturing of silica glass with microscale computed axial lithography Open
Glass is increasingly desired as a material for manufacturing complex microscopic geometries, from the micro-optics in compact consumer products to microfluidic systems for chemical synthesis and biological analyses. As the size, geometric…
View article: High fidelity volumetric additive manufacturing
High fidelity volumetric additive manufacturing Open
Volumetric additive manufacturing (VAM) promises a significantly improved regime of capabilities for 3D printing. Computed Axial Lithography (CAL) is a photopolymerization-based tomographic VAM process which constructs objects by projectin…
View article: Advances in biofabrication techniques towards functional bioprinted heterogeneous engineered tissues: A comprehensive review
Advances in biofabrication techniques towards functional bioprinted heterogeneous engineered tissues: A comprehensive review Open
Biofabrication is a fast-evolving and multi-disciplinary field, harnessing the benefits and capabilities of additive manufacturing and complementary bioassembly techniques at the intersection of biology and engineering. Biofabrication is p…
View article: Tomographic color Schlieren refractive index mapping for computed axial lithography
Tomographic color Schlieren refractive index mapping for computed axial lithography Open
Computed axial lithography, when used in polymeric systems, directly solidifies freeform three-dimensional geometries inside liquid or gelled materials. Currently, this patterning system operates in open loop where projections are designed…
View article: MMaJIC, an Experimental Chamber for Investigating Soldering and Brazing in Microgravity
MMaJIC, an Experimental Chamber for Investigating Soldering and Brazing in Microgravity Open
An E-1 payload, the Microgravity Materials Joining Investigative Chamber (MMaJIC), was designed and built for use aboard the International Space Station to investigate soldering and brazing phenomena in a microgravity environment. MMaJIC i…