Volumetric helical additive manufacturing

Boniface, Antoine; Maître, Florian; Madrid‐Wolff, Jorge; Moser, Christophe

doi:10.37188/lam.2023.012

Cited by 3 publications

(6 citation statements)

References 32 publications

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“…Models of dental retainers or lattice geometries featuring micron-sized details were among the first published examples using tomographic printing (Figure 11A,B). 33,41,152 Toombs et al recently demonstrated the fabrication of an auditory device which was suspended in a photoresin and subsequently overprinted to generate a composite object that fit the patient-specific shape of the ear canal (Figure 11C). 160 To avoid sedimentation of the suspended insert, an ethyl cellulose-based thermoreversible organogel photoresist was Cooling led to a rearrangement of intermolecular hydrogen bonds of ethyl cellulose, resulting in a porous solid network which trapped the TMPTA monomers.…”

Section: Chain Growth Cross-linking For Nonbiomedical Applicationsmentioning

confidence: 99%

“…111,186 Ingenious process design can also enable larger prints. For instance, larger prints in tomographic printing have been made possible by introducing a helical movement mechanism, 152 which allows indexing the vial position between tomographic projections to enable printing of constructs three times as large as those without a helical movement. One can envision such a system being controlled with a robotic arm, which could not only perform helical motions, but also print within multiple vials or within different regions of a single vial.…”

Section: Scaling Up the Build Volumementioning

confidence: 99%

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Light from Afield: Fast, High-Resolution, and Layer-Free Deep Vat 3D Printing

Chansoria,

Rizzo,

Rütsche

et al. 2024

Chem. Rev.

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Harnessing light for cross-linking of photoresponsive materials has revolutionized the field of 3D printing. A wide variety of techniques leveraging broadspectrum light shaping have been introduced as a way to achieve fast and high-resolution printing, with applications ranging from simple prototypes to biomimetic engineered tissues for regenerative medicine. Conventional light-based printing techniques use cross-linking of material in a layer-by-layer fashion to produce complex parts. Only recently, new techniques have emerged which deploy multidirection, tomographic, light-sheet or filamented lightbased image projections deep into the volume of resin-filled vat for photoinitiation and cross-linking. These Deep Vat printing (DVP) approaches alleviate the need for layer-wise printing and enable unprecedented fabrication speeds (within a few seconds) with high resolution (>10 μm). Here, we elucidate the physics and chemistry of these processes, their commonalities and differences, as well as their emerging applications in biomedical and non-biomedical fields. Importantly, we highlight their limitations, and future scope of research that will improve the scalability and applicability of these DVP techniques in a wide variety of engineering and regenerative medicine applications.

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Section: Chain Growth Cross-linking For Nonbiomedical Applicationsmentioning

confidence: 99%

Section: Scaling Up the Build Volumementioning

confidence: 99%

Light from Afield: Fast, High-Resolution, and Layer-Free Deep Vat 3D Printing

Chansoria,

Rizzo,

Rütsche

et al. 2024

Chem. Rev.

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“…included a motorized linear stage to have the resin follow a helical motion in the printer, enabling the fabrication of larger objects still in a layer-less manner. [ 38 ]…”

Section: D Printing As Tomographic Back-projectionmentioning

confidence: 99%

“…Objects printed in acrylates are typically stiff enough to retain their shape, but soft enough to open up new possibilities for elastomers, challenging materials to 3D print but with numerous industrial applications, like personalized hearing aids [ 12 ] or dental retainers [ 9 , 38 ] [Fig. 2 (a)].…”

Section: Materials Used For Vammentioning

confidence: 99%

A review of materials used in tomographic volumetric additive manufacturing

Madrid-Wolff,

Toombs,

Rizzo

et al. 2023

MRS Communications

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Volumetric additive manufacturing is a novel fabrication method allowing rapid, freeform, layer-less 3D printing. Analogous to computer tomography (CT), the method projects dynamic light patterns into a rotating vat of photosensitive resin. These light patterns build up a three-dimensional energy dose within the photosensitive resin, solidifying the volume of the desired object within seconds. Departing from established sequential fabrication methods like stereolithography or digital light printing, volumetric additive manufacturing offers new opportunities for the materials that can be used for printing. These include viscous acrylates and elastomers, epoxies (and orthogonal epoxy-acrylate formulations with spatially controlled stiffness) formulations, tunable stiffness thiol-enes and shape memory foams, polymer derived ceramics, silica-nanocomposite based glass, and gelatin-based hydrogels for cell-laden biofabrication. Here we review these materials, highlight the challenges to adapt them to volumetric additive manufacturing, and discuss the perspectives they present. Graphical abstract

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“…Therefore, multi-material and multi-cell VBP is in urgent need [13,99]. The manufacture of organoids and large-scale tissue structures are hot topic applications [50,51]. Additionally, in situ VBP might be an interesting direction [100].…”

Section: Outlook and Future Perspectivesmentioning

confidence: 99%

Advances in volumetric bioprinting

Jing,

Lian,

Hou

et al. 2023

Biofabrication

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The three-dimensional (3D) bioprinting technologies are suitable for biomedical applications owing to their ability to manufacture complex and high-precision tissue constructs. However, the slow printing speed of current layer-by-layer (bio)printing modality is the major limitation in biofabrication field. To overcome this issue, volumetric bioprinting (VBP) is developed. VBP changes the layer-wise operation of conventional devices, permitting the creation of geometrically complex, centimeter-scale constructs in tens of seconds. VBP is the next step onward from sequential biofabrication methods, opening new avenues for fast additive manufacturing (AM) in the fields of tissue engineering, regenerative medicine, personalized drug testing, and soft robotics, etc. Therefore, this review introduces the printing principles and hardware designs of VBP-based techniques; then focuses on the recent advances in VBP-based (bio)inks and their biomedical applications. Lastly, the current limitations of VBP are discussed together with future direction of research.

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Volumetric helical additive manufacturing

Cited by 3 publications

References 32 publications

Light from Afield: Fast, High-Resolution, and Layer-Free Deep Vat 3D Printing

Light from Afield: Fast, High-Resolution, and Layer-Free Deep Vat 3D Printing

A review of materials used in tomographic volumetric additive manufacturing

Advances in volumetric bioprinting

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