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Caroline A. Murphy, Cesar R. Alcala-Orozco, Alessia Longoni, Tim B. F. Woodfield, Khoon S. Lim
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digital light processing
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Image
Published: 12 September 2022
Fig. 17 Principle of digital light processing bioprinting. DMD, digital micromirror device. Source: Ref 28 . Creative Commons License (CC BY-ND 4.0), https://creativecommons.org/licenses/by-nd/4.0/
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Published: 15 June 2020
Image
Published: 15 May 2022
Fig. 49 Schematic drawing of the digital light processing additive manufacturing process. UV, ultraviolet
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in Developments and Trends in Additively Manufactured Medical Devices
> Additive Manufacturing in Biomedical Applications
Published: 12 September 2022
Fig. 13 One-piece zirconia dental implant printed using digital light processing. Source: Ref 79
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Image
Published: 12 September 2022
Fig. 13 Demonstration of working principle of (a) digital light processing bioprinting and (b) stereolithography bioprinting. UV, ultraviolet
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Published: 12 September 2022
Fig. 18 Nerve guidance conduits fabricated using digital light processing. Reprinted from Ref 38 with permission from Elsevier
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Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006553
EISBN: 978-1-62708-290-7
... a good alternative for AM for low-volume production. This overview of the VP process begins with an introduction to two main processes of VP, namely stereolithography apparatus and digital light processing, and then moves on to discuss the characteristics of the feedstocks used as well as their selection...
Abstract
Vat polymerization (VP) is an additive manufacturing (AM), or three-dimensional (3-D) printing process in which 3-D objects are produced by hardening a liquid polymer into the desired shape. With the introduction of new materials and improvements in material properties, VP offers a good alternative for AM for low-volume production. This overview of the VP process begins with an introduction to two main processes of VP, namely stereolithography apparatus and digital light processing, and then moves on to discuss the characteristics of the feedstocks used as well as their selection criteria. The article then covers safety issues associated with feedstock handling and the manufacturing constraints related to part orientation and design, providing some key tips for VP support structures. This is followed by a discussion on postprocessing/finishing of VP parts. A brief concluding section considers some special topics related to AM process.
Image
Published: 12 September 2022
Fig. 1 Main vat polymerization technologies comprise (a) stereolithography, (b) digital light processing, and (c) volumetric printing. Each technology relies on a light source that polymerizes a photosensitive resin inside a vat. DLP, digital light processing. Reprinted with permission from
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in Additively Manufactured Dentures, Crowns, and Bridges
> Additive Manufacturing in Biomedical Applications
Published: 12 September 2022
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in Online Monitoring and Control of Polymer Additive Manufacturing Processes
> Additive Manufacturing Design and Applications
Published: 30 June 2023
Fig. 9 Structured light three-dimensional (3D) scan system. (a) Schematic of the system. DLP, digital light processing; FFF, fused filament fabrication. (b) Actual 3D scanner. Source: Ref 64
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Image
Published: 12 September 2022
Fig. 15 Scale of natural biomaterials and printed feature size representation using different bioprinting methods. DPN, dip pen nanolithography; NFP, nano-fountain pen; NIL, nanoimprint lithography; DLP, digital light processing; SLA, stereolithography; LIFT, laser-induced forward transfer
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in Additively Manufactured Biomedical Energy Harvesters
> Additive Manufacturing in Biomedical Applications
Published: 12 September 2022
Fig. 7 Various 3D printing techniques to manufacture biomedical sensors. (a) Polyjet method. UV, ultraviolet. (b) 3D inkjet system. (c) Laser sintering technique. (d) Stereolithography system. (e) Fused deposition modeling. (f) Digital light processing. Source: Ref 119 . Creative Commons
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Published: 12 September 2022
with spacing of 0.5 base widths and (d) 1.5 base widths. Complex microneedle geometries such as (e) arrowhead microneedles, (f) tiered microneedles, and (g) turret microneedles that may improve mechanics of insertion into the skin. Scale bars measure 500 μm. DLP, digital light processing; UV, ultraviolet
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Book Chapter
Series: ASM Handbook
Volume: 23A
Publisher: ASM International
Published: 12 September 2022
DOI: 10.31399/asm.hb.v23A.a0006882
EISBN: 978-1-62708-392-8
... Material extrusion Material jetting Directed energy deposition Sheet lamination Due to its high resolution, ability to create complex structures, and fast processing time achieved using techniques such digital light processing (DLP), vat polymerization is at the forefront of technologies...
Abstract
Vat polymerization is a form of three-dimensional (3D) printing. Historically, it is the oldest additive manufacturing technique, with the development of stereolithography apparatus (SLA) by Charles Hull in 1986. This article outlines the various forms of vat polymerization techniques used for biomedical applications. Due to the complex nature of this printing process, many key print parameters and material properties need to be considered to ensure a successful print. These influential parameters are addressed throughout the article to inform the reader of the considerations that should be taken when using the vat polymerization technique. The article provides information on vat polymerization printer setup, the photo-cross-linking mechanism, and considerations using vat polymerization. In addition, it outlines and discusses the advancements of vat polymerization in the biomedical industry.
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003757
EISBN: 978-1-62708-177-1
... on the application of image processing and analysis to materials characterization. adaptive segmentation contour-based segmentation digital files digital imaging image acquisition image analysis image processing image representation image segmentation light microscopy material characterization...
Abstract
This article reviews the main theoretical and practical aspects of sequence normally followed in digital image-acquisition, processing, analysis, and output for material characterization. It discusses the main methods of digital imaging, image processing, and analysis, as applied to microscopy of materials. The article describes the basic concepts of sampling and resolution and quantization of light microscopy, scanning electron microscopy, and transmission electron microscopy. It discusses the acquisition of a digital image that accurately represents the sample under observation and output of the image to a printer. The methods used to enhance the digital image and to extract quantitative information are also described. Different types of image segmentation, namely, adaptive segmentation and contour-based segmentation, are reviewed. The article also presents case studies on the application of image processing and analysis to materials characterization.
Series: ASM Handbook
Volume: 23A
Publisher: ASM International
Published: 12 September 2022
DOI: 10.31399/asm.hb.v23A.a0006901
EISBN: 978-1-62708-392-8
... compared to alternative options. Printing speed is relevant to certain dental appliances, such as clear aligners, in which multiple parts must be printed in a certain period of time. Direct Light-Processing Printers Direct light-processing (also known as digital light-processing) (DLP) printers have...
Abstract
This article provides an overview of the adoption of additively manufactured materials in dentistry. It discusses the practical workflows of a three-dimensional printing technology, vat photopolymerization. Three subgroups of the vat photopolymerization process are laser beam or classic stereolithography apparatus (SLA), direct light processing, and liquid-crystal-display-masked SLA. The article covers two subgroups of 3D printing resins-based appliances, namely intraoral and extraoral appliances. Information on various types of dental appliances and the fabrication of in-office appliances is provided. The article also reviews fourth-dimension printing and discusses the applications of the personalized care model in medicine and dentistry.
Book: Fractography
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 June 2024
DOI: 10.31399/asm.hb.v12.a0006846
EISBN: 978-1-62708-387-4
... examination of fractured parts: the stereomicroscope and the single-light-path digital microscope. The common features present on fracture surfaces are each considered separately, both in their significance and as photographic challenges. The article also presents a short note on low-magnification scanning...
Abstract
This article provides a discussion on the following photographic equipment: point-and-shoot cameras, digital single-reflex cameras, stand-mounted digital zoom cameras, and digital microscope cameras. It presents two principal types of optical microscopes that are appropriate for visual examination of fractured parts: the stereomicroscope and the single-light-path digital microscope. The common features present on fracture surfaces are each considered separately, both in their significance and as photographic challenges. The article also presents a short note on low-magnification scanning electron microscopy and postcapture image processing.
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006763
EISBN: 978-1-62708-295-2
.... Each step of the process can be documented with digital photography, and the image captured at each stage can be verified. Tethered capture can also be used for photo table and tabletop photography so that lighting can be immediately adjusted, color correction performed, and accurate focus verified...
Abstract
Failure analysis is an investigative process that uses visual observations of features present on a failed component fracture surface combined with component and environmental conditions to determine the root cause of a failure. The primary means of recording the conditions and features observed during a failure analysis investigation is photography. Failure analysis photographic imaging is a combination of both science and art; experience and proper imaging techniques are required to produce an accurate and meaningful fracture surface photograph. This article reviews photographic principles and techniques as applied to failure analysis, both in the field and in the laboratory. The discussion covers the processes involved in field and laboratory photographic documentations, provides a description of professional digital cameras, and gives information on photographic lighting and microscopic photography. Special techniques can be employed to deal with highly reflective conditions and are also described in this article.
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006851
EISBN: 978-1-62708-395-9
... stages of a failure analysis where cleaning or sectioning is involved. Each step of the process can be documented with digital photography, and the image captured at each stage can be verified. Tethered capture can also be used for photo table and tabletop photography so that lighting can be immediately...
Abstract
Failure analysis is an investigative process in which the visual observations of features present on a failed component and the surrounding environment are essential in determining the root cause of a failure. This article reviews the basic photographic principles and techniques that are applied to failure analysis, both in the field and in the laboratory. It discusses the processes involved in visual examination, field photographic documentation, and laboratory photographic documentation of failed components. The article describes the operating principles of each part of a professional digital camera. It covers basic photographic principles and manipulation of settings that assist in producing high-quality images. The need for accurate photographic documentation in failure analysis is also presented.
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003527
EISBN: 978-1-62708-180-1
... on the photographic equipment used in failure analysis and on film and digital photography. The article describes the basics of photography and the uses of different types of lighting in photography of a fractured surface. The article also addresses the techniques involved in macrophotography and microscopic...
Abstract
This article reviews photographic principles, namely, visual examination, field photographic documentation, and laboratory photographic documentation, as applied to failure analysis and the specific techniques employed in both the field and laboratory. It provides information on the photographic equipment used in failure analysis and on film and digital photography. The article describes the basics of photography and the uses of different types of lighting in photography of a fractured surface. The article also addresses the techniques involved in macrophotography and microscopic photography as well as other special techniques.
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