Deconvolution volumetric additive manufacturing

Nature Communications, Год журнала: 2023, Номер 14(1)

Опубликована: Июль 21, 2023

Volumetric additive manufacturing techniques are a promising pathway to ultra-rapid light-based 3D fabrication. Their widespread adoption, however, demands significant improvement in print fidelity. Currently, volumetric prints suffer from systematic undercuring of fine features, making it impossible objects containing wide range feature sizes, precluding effective adoption many applications. Here, we uncover the reason for this limitation: light dose spread resin due chemical diffusion and optical blurring, which becomes features ⪅0.5 mm. We develop model that quantitatively predicts variation time with size demonstrate deconvolution method correct error. This enables previously beyond capabilities manufacturing, such as complex gyroid structure variable thickness fine-toothed gear. These results position mature printing method, all but eliminating gap industry-standard

Язык: Английский

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Continuous Volumetric 3D Printing: Xolography in Flow

Advanced Materials, Год журнала: 2023, Номер 36(4)

Опубликована: Авг. 11, 2023

Additive manufacturing techniques continue to improve in resolution, geometrical freedom, and production rates, expanding their application range research industry. Most established techniques, however, are based on layer-by-layer polymerization processes, leading an inherent trade-off between resolution printing speed. Volumetric 3D enables the of freely defined volumes allowing fabrication complex geometries at drastically increased rates high resolutions, marking next chapter light-based additive manufacturing. This work advances volumetric technique xolography a continuous process. Dual-color photopolymerization is performed continuously flowing resin, inside tailored flow cell. Supported by simulations, profile area flattened, resin velocities cell walls minimize unwanted via laser sheet-induced curing. Various objects printed true shape with smooth surfaces. Parallel object paves way for up-scaling production, currently reaching up 1.75 mm

Язык: Английский

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Advances in volumetric bioprinting

Biofabrication, Год журнала: 2023, Номер 16(1), С. 012004 - 012004

Опубликована: Ноя. 3, 2023

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

Язык: Английский

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Bioinspired Suspended Sensing Membrane Array with Modulable Wedged‐Conductive Channels for Crosstalk‐Free and High‐Resolution Detection

Advanced Science, Год журнала: 2024, Номер 11(28)

Опубликована: Май 8, 2024

Abstract High spatial‐resolution detection is essential for biomedical applications and human‐machine interaction. However, as the sensor array density increases, miniaturization will lead to interference between adjacent units deterioration in sensing performance. Here, inspired by cochlea's structure, a high‐density flexible pressure featuring with suspended membrane sensitivity‐enhanced customized channels presented crosstalk‐free high‐resolution detection. By imitating basilar attached spiral ligaments, fixed onto high‐stiffness substrate cavities, forming stable braced isolation provide an excellent capability (crosstalk coefficient: 47.24 dB) integration (100 within 1 cm 2 ). Similar opening of ion hair cells, wedge‐type expansion embedded cracks introduced stress concentration structures enables high sensitivity (0.19 kPa −1 ) large measuring range (400 kPa). Finally, it demonstrates promising distributed displays condition monitoring medical‐surgical intubation.

Язык: Английский

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Dynamic interface printing

Nature, Год журнала: 2024, Номер 634(8036), С. 1096 - 1102

Опубликована: Окт. 30, 2024

Additive manufacturing is an expanding multidisciplinary field encompassing applications including medical devices1, aerospace components2, microfabrication strategies3,4 and artificial organs5. Among additive approaches, light-based printing technologies, two-photon polymerization6, projection micro stereolithography7,8 volumetric printing9–14, have garnered significant attention due to their speed, resolution or potential for biofabrication. Here we introduce dynamic interface printing, a new 3D approach that leverages acoustically modulated, constrained air–liquid boundary rapidly generate centimetre-scale structures within tens of seconds. Unlike this process eliminates the need intricate feedback systems, specialized chemistry complex optics while maintaining rapid speeds. We demonstrate versatility technique across broad array materials geometries, those would be impossible print with conventional layer-by-layer methods. In doing so, fabrication in situ, overprinting, structural parallelization biofabrication utility. Moreover, show formation surface waves at enables enhanced mass transport, improves material flexibility permits particle patterning. We, therefore, anticipate will invaluable where high-resolution, scalable throughput biocompatible required. Dynamic form

Язык: Английский

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

Chemical Reviews, Год журнала: 2024, Номер 124(14), С. 8787 - 8822

Опубликована: Июль 5, 2024

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

Язык: Английский

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Volumetric Additive Manufacturing for Cell Printing: Bridging Industry Adaptation and Regulatory Frontiers

ACS Biomaterials Science & Engineering, Год журнала: 2025, Номер 11(1), С. 156 - 181

Опубликована: Янв. 2, 2025

Volumetric additive manufacturing (VAM) is revolutionizing the field of cell printing by enabling rapid creation complex three-dimensional cellular structures that mimic natural tissues. This paper explores advantages and limitations various VAM techniques, such as holographic lithography, digital light processing, volumetric projection, while addressing their suitability across diverse industrial applications. Despite significant potential VAM, challenges related to regulatory compliance scalability persist, particularly in context bioprinted In India, lack clear guidelines intellectual property protections poses additional hurdles for companies seeking navigate evolving landscape bioprinting. study emphasizes importance collaboration among industry stakeholders, agencies, academic institutions establish tailored frameworks promote innovation ensuring safety efficacy. By bridging gap between technological advancement oversight, can unlock new opportunities regenerative medicine tissue engineering, transforming patient care therapeutic outcomes.

Язык: Английский

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Two Material Properties from One Wavelength‐Orthogonal Photoresin Enabled by a Monochromatic Laser Integrated Stereolithographic Apparatus (Mono LISA)

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 17, 2025

Abstract Multi‐material printing has experienced critical advances in recent years, yet material property differentiation capabilities remain limited both with regard to the accessible properties – typically hard versus soft and achievable magnitude of differentiation. To enhance multi‐material capabilities, precise photochemical control during 3D is essential. Wavelength‐differentiation a particularly intriguing concept challenging implement. Notably, dual‐wavelength fabricate sections within one object emerged, where curing process insensitive visible light, while UV irradiation inevitably activates entire resin, limiting true spatio‐temporal properties. Until now, pathway‐independent wavelength‐orthogonal not been realized, each wavelength exclusively triggers only two possible reactions, independent order which wavelengths are applied. Herein, multi‐wavelength technique introduced employing tunable laser monochromatically deliver light platform loaded fully resin. Guided by action plots, distinct highly selective toward specific photocycloaddtion reaction utilized generate networks photoresin. Ultimately, together technique, this orthogonally addressable photoresin allows fabricating objects degradable non‐degradable properties, single fabrication step.

Язык: Английский

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Additive manufacturing: Frameworks for chemical understanding and advancement in vat photopolymerization

MRS Bulletin, Год журнала: 2022, Номер 47(6), С. 628 - 641

Опубликована: Июнь 1, 2022

Abstract Three-dimensional printing, or additive manufacturing (AM), is a broad term for wide range of fabrication methods utilizing materials such as small-molecule, polymer, and metal feedstocks. Each method requires different chemical, physical, engineering needs to be successful. This article will discuss some the considerations polymer-based AM methods. Ultimately, we focus on chemistries vat photopolymerization, in which light used cure resin from liquid solid, provide an example how chemical advancements have led increased speed, resolution, multimaterial printing capabilities not previously possible. Graphical abstract

Язык: Английский

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Liquid-Based 4D Printing of Shape Memory Nanocomposites: A Review

Journal of Manufacturing and Materials Processing, Год журнала: 2023, Номер 7(1), С. 35 - 35

Опубликована: Янв. 31, 2023

Significant advances have been made in recent years the materials development of liquid-based 4D printing. Nevertheless, employing additive such as nanoparticles for enhancing printability and shape memory characteristics is still challenging. Herein, we provide an overview developments printing highlights novel 4D-printable polymeric resins their nanocomposite components. Recent manufacturing technologies that utilise liquid resins, stereolithography, digital light processing, material jetting direct ink writing, are considered this review. The effects nanoparticle inclusion within on mechanical 3D-printed components comprehensively discussed. Employing various filler-modified mixture nanosilica, nanoclay nanographene, well fibrous to support properties 3D considered. Overall, review paper provides outline 4D-printed nanocomposites terms cutting-edge research, including properties.

Язык: Английский

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