3D printing: a critical review of current development and future prospects

Ali, Md. Hazrat; Batai, Shaheidula; Sarbassov, Dastan

doi:10.1108/rpj-11-2018-0293

Cited by 76 publications

(34 citation statements)

References 95 publications

(137 reference statements)

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“…The molding of 3D printing is the result of a layer-by-layer accumulation, which is a process of connecting dots into lines, overlapping lines into surfaces and stacking surfaces into bodies (Ali et al , 2019). As the printed substrate for in situ bioprinting and repair of complex skin tissue defects is an irregular curved surface structure, traditional flat-layered printing may cause step effects or interruption of the scanning lines.…”

Section: Multi-tissue Layering and Path Planning Methodsmentioning

confidence: 99%

Multi-tissue layering and path planning of in situ bioprinting for complex skin and soft tissue defects

Wang

Lian

et al. 2021

RPJ

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Purpose Reconstructing multi-layer tissue structure using cell printing to repairing complex tissue defect is a challenging task, especially using in situ bioprinting. This study aims to propose a method of in situ bioprinting multi-tissue layering and path planning for complex skin and soft tissue defects. Design/methodology/approach The scanned three-dimensional (3D) point cloud of the skin and soft tissue defect is taken as the input data, the depth value of the defect is then calculated using a two-step grid division method, and the tissue layer is judged according to the depth value. Then, the surface layering and path planning in the normal direction are performed for different tissue layers to achieve precise tissue layering filling of complex skin soft tissue defects. Findings The two-step grid method can accurately calculate the depth of skin and soft tissue defects and judge the tissue layer accordingly. In the in situ bioprinting experiment of the defect model, the defect can be completely closed. The defect can be reconstructed in situ, and the reconstructed structure is basically the same as the original skin tissue structure, proving the feasibility of the proposed method. Originality/value This study proposes an in situ bioprinting multi-tissue layering and path planning method for complex skin and soft tissue defects, which can directly convert the scanned 3D point cloud into a multi-tissue in situ bioprinting path. The printed result has a similar structure to that of the original skin tissue, which can make cells or growth factors act on the corresponding tissue layer targets.

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Section: Multi-tissue Layering and Path Planning Methodsmentioning

confidence: 99%

Multi-tissue layering and path planning of in situ bioprinting for complex skin and soft tissue defects

Wang

Lian

et al. 2021

RPJ

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“…More details about the other 3D printing technologies can be inquired in articles specialized in 3D printing. [41][42][43]…”

Section: D Printing Technologiesmentioning

confidence: 99%

Three‐dimensional printing of high‐mass loading electrodes for energy storage applications

Yang

Feng

Teng

et al. 2021

InfoMat

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Nanostructured materials afford a promising potential for many energy storage applications because of their extraordinary electrochemical properties. However, the remarkable electrochemical energy storage performance could only be harvested at a relatively low mass-loading via the traditional electrode fabrication process, and the scale of these materials into commercial-level mass-loading remains a daunting challenge because the ion diffusion kinetics deteriorates rapidly along with the increased thickness of the electrodes. Very recently, three-dimensional (3D) printing, a promising additive manufacturing technology, has been considered as an emerging method to address the aforementioned issues where the 3D printed electrodes could possess elaborately regulated architectures and rationally organized porosity. As a result, the outstanding electrochemical performance has been widely observed in energy storage devices made of 3D printed electrodes of high-mass loading. In this review, we systemically introduce the basic working principles of various 3D printing technologies and their practical applications to manufacture highmass loading electrodes for energy storage devices. Challenges and perspectives in 3D printing technologies for the construction of electrodes at the current stage are also outlined, aiming to offer some useful opinions for further development for this prosperous field.

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“…Additive manufacturing (also known as 3D printing) has been an active area of research for its extensive application in fields including engineering design, aerospace, construction and marine (Ali et al, 2019). To achieve capabilities in printing complex structures of different materials, a variety of additive manufacturing techniques have been developed that include material extrusion (MEX), powder bed fusion (PBF), directed energy deposition (DED) and material jetting (MJT), etc.…”

Section: Introductionmentioning

confidence: 99%

Particle emission levels in the user operating environment of powder, ink and filament-based 3D printers

Ding¹,

2021

RPJ

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Purpose This study aims to examine on-site particle concentration levels due to emissions from a wide spectrum of additive manufacturing techniques, including polymer-based material extrusion, metal and polymer-based powder bed fusion, directed energy deposition and ink-based material jetting. Design/methodology/approach Particle concentrations in the operating environments of users were measured using a combination of particle sizers including the TSI 3910 Nano SMPS (10–420 nm) and the TSI 3330 optical particle sizer (0.3–10 µm). Also, fumes from a MEX printer during printing were directly captured using laser imaging method. Findings The number and mass concentration of submicron particles emitted from a desktop open-type MEX printer for acrylonitrile-butadiene-styrene and polyvinyl alcohol approached and significantly exceeded the nanoparticle reference limits, respectively. Through laser imaging, fumes were observed to originate from the printer nozzle and from newly deposited layers of the desktop MEX printer. On the other hand, caution should be taken in the pre-processing of metal and polymer powder. Specifically, one to ten micrometers of particles were observed during the sieving, loading and cleaning of powder, with transient mass concentrations ranging between 150 and 9,000 µg/m3 that significantly exceeded the threshold level suggested for indoor air quality. Originality/value Preliminary investigation into possible exposures to particle emissions from different 3D printing processes was done, which is useful for the sustainable development of the 3D printing industry. In addition, automatic processes that enable “closed powder cycle” or “powder free handling” should be adopted to prevent users from unnecessary particle exposure.

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3D printing: a critical review of current development and future prospects

Cited by 76 publications

References 95 publications

Multi-tissue layering and path planning of in situ bioprinting for complex skin and soft tissue defects

Multi-tissue layering and path planning of in situ bioprinting for complex skin and soft tissue defects

Three‐dimensional printing of high‐mass loading electrodes for energy storage applications

Particle emission levels in the user operating environment of powder, ink and filament-based 3D printers

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