Multi-axis 3D printing of gelatin methacryloyl hydrogels on a non-planar surface obtained from magnetic resonance imaging

Wulle, Frederik; Görke, Oliver; Nistler, Maximilian; Tovar, Günter E. M.; Riedel, Oliver; Verl, Alexander; Weber, Achim; Southan, Alexander

doi:10.1016/j.addma.2021.102566

Cited by 13 publications

(5 citation statements)

References 42 publications

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“…When using magnetic materials, magnetization distributions can be readily tuned during the printing process. However, the solidification of hydrogel inks was hard to control, leading to the fidelity of printed structure and clogging of the nozzle ( Chen et al, 2019 ; Wulle et al, 2022 ). In recent years, multimaterial direct ink printing (4D direct ink printing) which employs an extra time dimension has emerged as a fast and straightforward technique to generate various hydrogel robots.…”

Section: Construction Of Magnetic Hydrogels With Ordered Structurementioning

confidence: 99%

Magnetic hydrogels with ordered structure for biomedical applications

Xue

Sun

2022

Front. Chem.

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Magnetic hydrogels composed of hydrogel matrices and magnetic nanomaterials have attracted widespread interests. Thereinto, magnetic hydrogels with ordered structure possessing enhanced functionalities and unique architectures, show tremendous advantages in biomedical fields. The ordered structure brought unique anisotropic properties and excellent physical properties. Furthermore, the anisotropic properties of magnetic ordered hydrogels are more analogous to biological tissues in morphology and mechanical property, showing better biocompatibility and bioinducibility. Thus, we aim to systematically describe the latest advances of magnetic hydrogels with ordered structure. Firstly, this review introduced the synthetic methods of magnetic hydrogels focus on constructing ordered structure. Then, their functionalities and biomedical applications are also summarized. Finally, the current challenges and a compelling perspective outlook of magnetic ordered hydrogel are present.

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Section: Construction Of Magnetic Hydrogels With Ordered Structurementioning

confidence: 99%

Magnetic hydrogels with ordered structure for biomedical applications

Xue

Sun

2022

Front. Chem.

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“…The association of 3D printing to printing to 3 degrees of freedom is likely due to most 3D printers are designed using a three-dimensional Cartesian coordinate robot. However, there are also many 3D printers that are designed using a rotary platform, multi-axis platform, robotic arm, or a combination of these [57][58][59][60][61]. However, all these printers still make products in three dimensions spatially in the 'spacetime continuum.'…”

Section: Multi-dimensional 3d Printingmentioning

confidence: 99%

Multi-material and Multi-dimensional 3D Printing for Biomedical Materials and Devices

Leong

2022

Biomedical Materials & Devices

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In recent years, Additive Manufacturing (AM) has evolved into a "multi-x" era, such as multi-part design, multi-material, multi-process, multi-mode, multi-scale, multi-dimension, and multi-function. These emerging new features of AM present both tremendous opportunities and challenges for developing and regulating new and novel biomedical materials and devices. This paper focuses on two aspects, namely multi-material and multi-dimension AM. In multi-material 3D printing, the layering step is the key. Modifying the layering method yet without changing the solidifying or bonding principles governing the AM process can enable and significantly advance multi-material 3D printing. In multi-dimensional 3D printing, typically 4D printing and 5D printing, the meaning of "D" is suggested to refer to space-time dimension rather than the number of degrees of freedom in physical space. It is proposed in this paper that an alternative dimension (or 5D) for future 3D printing processes can be that of scale. Scale here refers the different levels of resolution that are used simultaneously within a print. In such a scale dimension, continuous printing of cross-scale or varied resolution design features in a single build process without affecting the overall printing speed and time would be highly desirable. This is probably the first paper reflecting on multi-material 3D printing from the perspective of layering and on multi-dimensional 3D printing with regard to its future development.

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“…It is important to note that academics and companies have become more interested in printing curved geometries using planar or even non-planner FDM techniques. 17 All complex geometries consist of some curves and primitive geometries, including cubes, cylinders, tubes, spheres, disks, torus, etc. thus, printing these geometries with the FDM process should be investigated.…”

Section: Introductionmentioning

confidence: 99%

Printing strategies to fabricate a disk through the fused deposition modeling method

Yousefi

Hashemi

Sedighi

2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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The fused deposition modeling (FDM) technique is widely used in different industries due to its low cost and ability to produce complex geometries from polymers. In this technique, some manufacturing parameters are essential because of their effects on the mechanical performance of the final fabricated part. The current study investigated the impact of path strategy and printing speed, two key manufacturing factors, on the mechanical performance of printed disks. Six types of path strategies of rasters corresponding to the loading direction, namely unidirectional-vertical, unidirectional-horizontal, unidirectional-45, cross, cross-45, and concentrate, were used for printing some disks, and compressive tests were done on them. The results showed that these path strategies’ average compressive failure loads were 2955, 4957, 2342, 4640, 3971, and 5893 N, respectively. The lower compressive strength of the unidirectional path pattern was due to the weak zones that were located between the printed layers and rasters. Besides, three printing speeds of 40, 60, and 80 mm/s were considered to fabricate the disks with a concentrate path pattern, and compressive experiments were performed. The results showed that the 40 mm/s printing speed conducted a compressive failure load of 4544 N, while 60 and 80 mm/s resulted in 3008 and 2828 N, respectively. Finally, inter-layer strength as a major factor in controlling the compressive strength of the disks was comprehensively discussed.

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Multi-axis 3D printing of gelatin methacryloyl hydrogels on a non-planar surface obtained from magnetic resonance imaging

Cited by 13 publications

References 42 publications

Magnetic hydrogels with ordered structure for biomedical applications

Magnetic hydrogels with ordered structure for biomedical applications

Multi-material and Multi-dimensional 3D Printing for Biomedical Materials and Devices

Printing strategies to fabricate a disk through the fused deposition modeling method

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