Bibliographies thématiques / Stereolithographu

Littérature scientifique sur le sujet « Stereolithographu »

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Publié le 20 avril 2024

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Articles de revues sur le sujet "Stereolithographu"

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Konasch, Jan, Alexander Riess, Michael Teske, Natalia Rekowska, Natalia Rekowska, Robert Mau, Thomas Eickner, Niels Grabow et Hermann Seitz. « Novel 3D printing concept for the fabrication of time-controlled drug delivery systems ». Current Directions in Biomedical Engineering 4, no 1 (1 septembre 2018) : 141–44. http://dx.doi.org/10.1515/cdbme-2018-0035.

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AbstractThree-dimensional (3D) printing has become a popular technique in many areas. One emerging field is the use of 3D printing for the development of 3D drug delivery systems (DDS) and drug-loaded medical devices. This article describes a novel concept for the fabrication of timecontrolled drug delivery systems based on stereolithography combined with inkjet printing. An inkjet printhead and an UV-LED light source have been integrated into an existing stereolithography system. Inkjet printing is used to selectively incorporate active pharmaceutical ingredients (API) during a stereolithographic 3D printing process. In an initial experimental study, poly (ethylene glycol) diacrylate (PEGDA) was used as polymer whereas 2-Hydroxy-4´-(2- hydroxyethoxy)-2-methylpropiophenone (Irgacure 2959) and Lithium phenyl-2,4,6-trimethylbenzoylphosphinate (LAP) were used as photoinitiators. Basic structures could be manufactured successfully by the new hybrid 3D printing system.
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Corcione, Carola Esposito. « Development and characterization of novel photopolymerizable formulations for stereolithography ». Journal of Polymer Engineering 34, no 1 (1 février 2014) : 85–93. http://dx.doi.org/10.1515/polyeng-2013-0224.

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Abstract Novel photopolymerizable formulations, able to photopolymerize with a dual mechanism (cationic and radical), were developed and characterized as potential resins for stereolithography (SL) process. The influence of the presence of organically modified boehmite nanoparticles on the properties of the photopolymerizable mixtures was also analyzed. The main properties required for a liquid SL resin are a high reactivity and a low viscosity. All of the experimental formulations produced, even in the presence of boehmite nanoparticles, are able to satisfy these significant requirements. Physical-mechanical and thermal properties of the photocured samples, obtained starting from the experimental formulations, were finally measured. The cured nanocomposite bars show a high transparency, confirming the good dispersion of the nanofiller in the polymeric matrix and possess improved glass transition temperature (Tg) and mechanical performances, compared to the unfilled system and to a commercial stereolithographic resin. These results suggest the possibility of using the novel nanofilled photopolymerizable suspensions in the stereolithographic apparatus to build, not only esthetical, but also functional prototypes.
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Islas Ruiz DDS, Ma del Socorro, Miguel Ángel Loyola Frías DDS, Ricardo Martínez Rider DDS, Amaury Pozos Guillén DDS, PhD et Arturo Garrocho Rangel DDS, PhD. « Fundamentals of Stereolithography, an Useful Tool for Diagnosis in Dentistry ». Odovtos - International Journal of Dental Sciences 17, no 2 (1 décembre 2015) : 15. http://dx.doi.org/10.15517/ijds.v17i2.20730.

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Advancements in digital technology and imaging over the last 25 years have permitted the implementation of three-dimensional (3D) modeling protocols in Dentistry. The use of stereolithographic models has progressively replaced traditional milled models and x-rays in the management of craniofacial anomalies and in implant rehabilitation. Diverse advantages can be mentioned, including better visualization of complex anatomical structures and more precise and sophisticated pre-surgical planning, through a simulated insight of the procedures of interest. The aim of this review is to provide essential information about the different applications and limitations of stereolithography, addressed to those general dentists and dental students interested in gaining experience in the reconstructive surgery and implant placement fields.
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Paiva, Wellingson Silva, Robson Amorim, Douglas Alexandre França Bezerra et Marcos Masini. « Aplication of the stereolithography technique in complex spine surgery ». Arquivos de Neuro-Psiquiatria 65, no 2b (juin 2007) : 443–45. http://dx.doi.org/10.1590/s0004-282x2007000300015.

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Many techniques have been proposed for surgical training as a learning process for young surgeons or for the simulation of complex procedures. Stereolithograpfy, a rapid prototyping technique, has been presented recently as an option for these purposes. We describe the case of a 12 years old boy, diagnosed with Ewing´s sarcoma in the cervical spine. After a surgical simulation accomplished in the prototype, built by stereolithography, the patient was submitted to a C4 corpectomy and to a C4 and C3 laminectomy with anterior and posterior fixation, a non intercurrence procedure. This technique is an innovative and complementary tool in diagnosis and therapy. As a result, it is easier for the surgeon to understand the complexity of the case and plan the approach before any surgical procedure.
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Kreuels, Klaus, David Bosma, Nadine Nottrodt et Arnold Gillner. « Utilizing direct-initiation of thiols for photoinitiator-free stereolithographic 3D printing of mechanically stable scaffolds ». Current Directions in Biomedical Engineering 7, no 2 (1 octobre 2021) : 847–50. http://dx.doi.org/10.1515/cdbme-2021-2216.

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Abstract The automated production of artificial biological structures for biomedical applications continues to gather interest. Different fields of science are combined to find solutions for the arising multidimensional problems. Additive manufacturing in combination with material science provides one solution for the biological issues around 3D cell culture and construction of living tissues. Here, we present the photoinitiator-free stereolithographic fabrication of thiol-ene polymers with microarchitectures in the range of tens of microns for scaffolds up to the millimeter scale. Scaffolds composed of cubic unit cells were designed using computer-aided design (CAD) and subsequently 3D printed with a custom-made laser stereolithography setup. The process parameters were determined step by step with increasing complexity and number of parameters. Gained insights were applied to the fabrication of 3D printed test specimens. The quality of the 3D printed parts was evaluated by measuring the porosity and optical microscopy images. Furthermore, the mechanical properties of the scaffold structures were characterized using compression testing and compared with the bulk material revealing a lower capacity to bear load but higher flexibility. In this study, we demonstrate the advantages of combining the high-precision, freeform fabrication of stereolithography with a biocompatible material for the fabrication of complex microarchitectures for biomedical applications
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Dizon, John Ryan C., Ray Noel M. Delda, Madelene V. Villablanca, Juvy Monserate, Lina T. Cancino et Honelly Mae S. Cascolan. « Material Development for Additive Manufacturing : Compressive Loading Behavior of SLA 3D-Printed Thermosets with Nanosilica Powders ». Materials Science Forum 1087 (12 mai 2023) : 137–42. http://dx.doi.org/10.4028/p-1n1o01.

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3D printing is now being used in many different applications. This adoption of 3D printing in these applications is accelerated by the development of new materials such as high performance polymers and nanocomposites. In this study, a commercially-available stereolithographic (SLA) resin has been reinforced with 0%, 0.1%, 0.3% and 0.5% nanosilica powder. The resulting mixture has been 3D-printed using a stereolithography 3d printer. The 3D-printed composites have been post-cured in a UV chamber and the mechanical properties have been assessed under compressive loading using a universal testing machine (ASTM-D695). The results show that adding nanosilica powder to the resin would increase the compressive strength of the resin, and that the highest compressive strength could be observed when 0.1% nanosilica poweder was added to the resin.
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Dietrich, Christian Andreas, Andreas Ender, Stefan Baumgartner et Albert Mehl. « A validation study of reconstructed rapid prototyping models produced by two technologies ». Angle Orthodontist 87, no 5 (1 mai 2017) : 782–87. http://dx.doi.org/10.2319/01091-727.1.

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ABSTRACT Objective: To determine the accuracy (trueness and precision) of two different rapid prototyping (RP) techniques for the physical reproduction of three-dimensional (3D) digital orthodontic study casts, a comparative assessment using two 3D STL files of two different maxillary dentitions (two cases) as a reference was accomplished. Materials and Methods: Five RP replicas per case were fabricated using both stereolithography (SLA) and the PolyJet system. The 20 reproduced casts were digitized with a highly accurate reference scanner, and surface superimpositions were performed. Precision was measured by superimposing the digitized replicas within each case with themselves. Superimposing the digitized replicas with the corresponding STL reference files assessed trueness. Statistical significance between the two tested RP procedures was evaluated with independent-sample t-tests (P < .05). Results: The SLA and PolyJet replicas showed statistically significant differences for trueness and precision. The precision of both tested RP systems was high, with mean deviations in stereolithographic models of 23 (±6) μm and in PolyJet replicas of 46 (±13) μm. The mean deviation for trueness in stereolithographic replicas was 109 (±4) μm, while in PolyJet replicas, it was 66 (±14) μm. Conclusions: Comparing the STL reference files, the PolyJet replicas showed higher trueness than the SLA models. But the precision measurements favored the SLA technique. The dimensional errors observed in this study were a maximum of 127 μm. In the present study, both types of reproduced digital orthodontic models are suitable for diagnostics and treatment planning.
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Hoffmann, Andreas, Holger Leonards, Nora Tobies, Ludwig Pongratz, Klaus Kreuels, Franziska Kreimendahl, Christian Apel, Martin Wehner et Nadine Nottrodt. « New stereolithographic resin providing functional surfaces for biocompatible three-dimensional printing ». Journal of Tissue Engineering 8 (1 janvier 2017) : 204173141774448. http://dx.doi.org/10.1177/2041731417744485.

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Stereolithography is one of the most promising technologies for the production of tailored implants. Within this study, we show the results of a new resin formulation for three-dimensional printing which is also useful for subsequent surface functionalization. The class of materials is based on monomers containing either thiol or alkene groups. By irradiation of the monomers at a wavelength of 266 nm, we demonstrated an initiator-free stereolithographic process based on thiol-ene click chemistry. Specimens made from this material have successfully been tested for biocompatibility. Using Fourier-transform infrared spectrometry and fluorescent staining, we are able to show that off-stoichiometric amounts of functional groups in the monomers allow us to produce scaffolds with functional surfaces. We established a new protocol to demonstrate the opportunity to functionalize the surface by copper-catalyzed azide-alkyne cycloaddition chemistry. Finally, we demonstrate a three-dimensional bioprinting concept for the production of potentially biocompatible polymers with thiol-functionalized surfaces usable for subsequent functionalization.
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Mele, Mattia, et Giampaolo Campana. « An experimental approach to manufacturability assessment of microfluidic devices produced by stereolithography ». Proceedings of the Institution of Mechanical Engineers, Part C : Journal of Mechanical Engineering Science 234, no 24 (9 juin 2020) : 4905–16. http://dx.doi.org/10.1177/0954406220932203.

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Lab-on-a-Chips integrate a variety of laboratory functions and embed microchannels for small fluid volume handling. These devices are used in medicine, chemistry, and biotechnology applications but a large diffusion is limited due to the manufacturing cost of traditional processes. Additive Manufacturing offers affordable alternatives for the production of microfluidic devices, because the fabrication of embedded micrometric channels is enabled. Stereolithography gained particular attention due to the low cost of both available machines and suitable polymeric materials to be processed. The main restriction to the adoption of this technique comes from the obtainable dimensional accuracy that depends not only on design, but also on process set-up. Firstly, the paper analyses theoretically the physics of stereolithographic processes and focuses on main phenomena related to microchannel manufacturing. Then, specific experimental activities are designed to investigate the combined effect of design and process parameters on the achievable dimensional accuracy of embedded microchannels manufactured through a commercial desktop stereolithography apparatus. In particular, the combined effect of channel nominal dimensions, build orientations and the layer thickness on the obtainable accuracy is examined by referring to a benchmark geometry. The collated experimental data showed that a number of combinations are successful. Besides, the experimental activity revealed that appropriate combinations of design, build orientation and manufacturing parameters can overcome the dimensional limitations reported in previous studies. Both binary logistic regression models to predict the manufacturability of microchannels and linear regression models to estimate the achievable accuracy for those geometries that can be produced successfully are developed.
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Dolz, Mark S., Stephen J. Cina et Roger Smith. « Stereolithography ». American Journal of Forensic Medicine and Pathology 21, no 2 (juin 2000) : 119–23. http://dx.doi.org/10.1097/00000433-200006000-00005.

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Thèses sur le sujet "Stereolithographu"

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Tang, Yanyan. « Stereolithography Cure Process Modeling ». Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7235.

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Although stereolithography (SL) is a remarkable improvement over conventional prototyping production, it is being pushed aggressively for improvements in both speed and resolution. However, it is not clear currently how these two features can be improved simultaneously and what the limits are for such optimization. In order to address this issue a quantitative SL cure process model is developed which takes into account all the sub-processes involved in SL: exposure, photoinitiation, photopolymerizaion, mass and heat transfer. To parameterize the model, the thermal and physical properties of a model compound system, ethoxylated (4) pentaerythritol tetraacrylate (E4PETeA) with 2,2-dimethoxy-2-phenylacetophenone (DMPA) as initiator, are determined. The free radical photopolymerization kinetics is also characterized by differential photocalorimetry (DPC) and a comprehensive kinetic model parameterized for the model material. The SL process model is then solved using the finite element method in the software package, FEMLAB, and validated by the capability of predicting fabricated part dimensions. The SL cure process model, also referred to as the degree of cure (DOC) threshold model, simulates the cure behavior during the SL fabrication process, and provides insight into the part building mechanisms. It predicts the cured part dimension within 25% error, while the prediction error of the exposure threshold model currently utilized in SL industry is up to 50%. The DOC threshold model has been used to investigate the effects of material and process parameters on the SL performance properties, such as resolution, speed, maximum temperature rise in the resin bath, and maximum DOC of the green part. The effective factors are identified and parameter optimization is performed, which also provides guidelines for SL material development as well as process and laser improvement.
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Han, Zhao. « Accuracy improvement of stereolithography ». Thesis, University of Liverpool, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.486424.

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The basic layer-based manufacturing mechanism of stereolithography is built upon a scanning pattern for the entire cross section for each layer. The purpose of this research is to investigate experimentally and theoretically the effects of a new scanning pattern with the aim of improving the dimensional and geometrical performance of Stereolithography against a benchmarked industry standard scanning pattern. The development of the new Bisector scanning patterns is based on the hypothesis that a contour-oriented scanning sequence with more built-in relaxation could provide a more uniform distribution of residual stress caused by the intrinsic phase transformation due to the photopolymerization process. Experiments on a variety of geometries showed that the new scanning pattern offers substantial improvements in terms of dimensional accuracy, part flatness, surface profile and the system running cost. This further insight into the effects of the scanning patterns was gained through the use of Finite Element (FE) modelling. A commercial FE package ABAQUS was employed to develop thermo-mechanical analogous models to ~nalyse and compare the stresses, strains and distortion induced by each pattern. For the Bisector scanning pattern, the scanning direction and length of scanning vectors are more symmetrical distributed in X and Y axes and hence the distortion or curl occurs in both axes and is comparatively less than that observed for the STAR-WEAVE scanning pattern. If the same overall shrinkage is distributed in both axes then the net distortion must be reduced. The modelling results are consistent with the experimental results of this research, in that the amount of distortion on Bisector scanning patterns is less than the STAR-WEAVE scanning pattern.
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Tse, Laam Angela. « MEMS packaging with stereolithography ». Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/17025.

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LeBaut, Yann P. « Thermal aspect of stereolithography molds ». Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/15991.

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Crawford, Joseph Carlisle-Eric III. « Injection failure of stereolithography molds ». Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/17687.

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Male, John Christie. « Liquid surface measurement in stereolithography ». Thesis, Brunel University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343290.

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Fournie, Victor. « Développement d’une bio-imprimante 3D opto-fluidique pour l’impression haute résolution et multimatériaux d’hydrogel ». Electronic Thesis or Diss., Toulouse, INSA, 2023. http://www.theses.fr/2023ISAT0057.

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Au cours de cette étude, nous avons introduit un concept novateur d'impression 3D à des fins biologiques. La plateforme 3D-FlowPrint a été conçue pour réaliser des impressions en haute résolution avec plusieurs matériaux. Cette approche vise à pallier les lacunes actuelles des technologies existantes. La micro-extrusion, la stéréolithographie et les sondes microfluidiques ont parfois la capacité d'imprimer des objets hétérogènes, d'imprimer en hautes résolutions ou de précisément manipuler des fluides, mais jamais toutes ces conditions ne sont réunies de manière satisfaisante. La plateforme 3D-FlowPrint adopte un système microfluidique pour acheminer les fluides jusqu'à une tête d'impression immergée, où la solution injectée est photopolymérisée. En dissociant l'apport du matériau de sa polymérisation, cette plateforme parvient à offrir à la fois une haute résolution et la possibilité de travailler avec divers matériaux.Le cœur de cette plateforme réside dans la conception de sa tête d'impression. Cette tête permet l'injection et la récupération des fluides sans contamination de l'environnement, tout en facilitant la transmission de la lumière d'un laser via une fibre optique intégrée. Pour atteindre ces objectifs, nous avons élaboré quatre générations successives de têtes d'impression. La première génération, usinée et moulée, a démontré la faisabilité du concept, mais avait des marges d'amélioration. La deuxième génération, entièrement imprimée en 3D, offrait de nouvelles possibilités géométriques et un prototypage rapide, mais posait des problèmes en matière d'interface optique. La troisième génération, combinant impression 3D et assemblage de matériaux optiquement compatibles, a permis des impressions reproductibles de PEGDA pour développer et caractériser la plateforme. Cependant, cette génération avait des limitations pour l'impression de GelMA. La quatrième génération a surmonté ce problème en introduisant une bulle d'air sous la tête et résolvant ainsi les défis de la troisième génération.Ce manuscrit analyse aussi le système microfluidique en place. Les têtes d'impression fonctionnent en immersion pour autoriser l'impression dans des environnements cellulaires. Ces têtes comprennent un canal d'injection et un canal d'aspiration, ainsi que des reliefs de surface pour assurer la collecte complète de la solution injectée, minimisant la contamination. Via des simulations numériques, des diagrammes de phase ont été établis pour évaluer le taux de récupération du matériau injecté. Ces simulations ont orienté l'optimisation des reliefs de surface pour améliorer les performances des têtes d'impression. De plus, la capacité à changer de fluide au cours d'une impression multimatériaux a été analysée.L'introduction d'une fibre optique dans la tête d’impression a permis la photopolymérisation de la solution injectée. La plateforme a gagné en versatilité avec deux vitesses d'impression grâce à des têtes d'impression imprimées en 3D comprenant deux fibres optiques. Les seuils de photopolymérisation du PEGDA et du GelMA ont été étudiés, et l'impact des flux sur la photopolymérisation a été vérifié. Ces analyses ont abouti à l'impression de structures 2D, 3D et multimatériaux de manière reproductible avec une précision jusqu'à 7 um.En tant que preuve de concept pour des applications biologiques, la plateforme a été utilisée pour quatre approches différentes. Premièrement, des objets en PEGDA inhibent l'adhérence cellulaire sur des parties spécifiques du substrat, permettant d'étudier le développement contraint géométriquement. Deuxièmement, des structures de soutien (scaffold) pour des tissus surfaciques en 3D ont été imprimées. Troisièmement, l'impression de cellules en suspension dans du GelMA a été réalisée ainsi que la caractérisation de la viabilité cellulaire de cette méthode. Finalement, une plateforme hybride a été développée pour la coimpression d'hydrogels et le positionnement de sphéroïdes en trois dimensions
In this thesis report, we introduce a pioneering concept in 3D printing applied to biological applications. The 3D-FlowPrint platform has been devised to execute high-resolution prints using multiple materials. This approach addresses the current limitations inherent in existing technologies. Micro-extrusion, stereolithography, and microfluidic probes possess individual capabilities to handle heterogeneous objects printing, achieve high resolutions, and manipulate fluids with precision. However, these capabilities have never been fully united in a proper technic. The 3D-FlowPrint platform draws inspiration from each of these concepts. It employs a microfluidic system to channel fluids to a submerged printhead, where the injected solution undergoes photopolymerization. By decoupling material deposition from polymerization, this platform attains both high resolution and the versatility to work with diverse materials.The heart of this platform resides in the design of its printhead. This printhead enables fluid injection and retrieval without environmental contamination, while facilitating laser transmission through an integrated optical fiber. To achieve these goals, we have developed four successive generations of printheads. The first generation, machined and molded, demonstrated the feasibility of the concept but presented room for improvement. The second generation, entirely 3D printed, introduced new geometric possibilities and rapid prototyping but faced challenges with optical interfaces. The third generation combined 3D printing with optically compatible material assembling. It enabled reproducible PEGDA prints to develop and characterize the platform, yet it encountered limitations for GelMA printing. The fourth generation overcame this challenge by introducing an air bubble under the printhead, resolving third-generation issues.This manuscript also analyzes the microfluidic system. The printheads operate immersed, enabling printing in cultured environments. These heads include an injection channel and an aspiration channel, along with surface reliefs ensuring complete collection of the injected solution to minimize contamination. Utilizing finite element-based numerical simulations, phase diagrams have been established to evaluate the material collection capacity. These simulations guided the optimization of surface reliefs to enhance the performance of the printheads. Additionally, the ability to transition from one fluid to another in multi-material printing was analyzed.The introduction of an optical fiber between the microfluidic channels allowed the photopolymerization of the injected solution. The platform gained versatility with dual printing speeds enabled by the insertion of two optical fibers in the 3D printed printheads. Photopolymerization thresholds of PEGDA and GelMA were investigated, and the impact of in-flow photopolymerization was verified. These analyses culminated in the printing of 2D, 2.5D, 3D, and multi-material structures with reproducible precision down to 7 micrometers.Serving as proof of concept for biological applications, the platform was employed in four distinct approaches. First, PEGDA objects prevented cell adhesion on specific part of the substrate, enabling the study of geometrically constrained development. Second, scaffold structures for surfacic 3D tissues were printed. Third, the printing of suspension of cells in GelMA was achieved, along with the characterization of cellular viability using this method. Lastly, a hybrid platform was developed for co-printing hydrogels and positioning 3D spheroids
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D'Urso, Paul Steven. « Stereolithographic biomodelling in surgery / ». [St. Lucia, Qld.], 1998. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17881.pdf.

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Liao, Hongmei. « Stereolithography using compositions containing ceramic powders ». Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ27992.pdf.

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Blair, Bryan Micharel. « Post-build processing of stereolithography molds ». Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/19132.

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Livres sur le sujet "Stereolithographu"

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Bártolo, Paulo Jorge, dir. Stereolithography. Boston, MA : Springer US, 2011. http://dx.doi.org/10.1007/978-0-387-92904-0.

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Chong, Law Pak. Stereolithography. Manchester : University of Manchester, Department of Computer Science, 1996.

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Mangroo, Alan Deo. Stereolithography. Manchester : University of Manchester, Department of Computer Science, 1997.

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Devine, John. Information sheet on stereolithography. London : Information and Library Service, Institution of Mechanical Engineers, 1991.

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service), SpringerLink (Online, dir. Stereolithography : Materials, Processes and Applications. Boston, MA : Springer Science+Business Media, LLC, 2011.

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6

Jacobs, Paul F. Rapid prototyping & manufacturing : Fundamentals of stereolithography. Dearborn, MI : Society of Manufacturing Engineers in cooperation with the Computer and Automated Systems Association of SME, 1992.

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Liao, Hongmei. Stereolithography using compositions containing ceramic powders. Ottawa : National Library of Canada = Bibliothèque nationale du Canada, 1997.

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8

Stereolithography and other RP&M technologies : From rapid prototyping to rapid tooling. Dearborn, Mich : Society of Manufacturing Engineers in cooperation with the Rapid Prototyping Association of SME, 1996.

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Rtolo, Paulo Jorge B. Stereolithography. Springer, 2011.

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1942-, Devine John, et Institution of Mechanical Engineers, dir. Information sheet on stereolithography. Information and Library Service, Institution of Mechanical Engineers, 1991.

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Chapitres de livres sur le sujet "Stereolithographu"

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Bártolo, Paulo Jorge. « Stereolithographic Processes ». Dans Stereolithography, 1–36. Boston, MA : Springer US, 2011. http://dx.doi.org/10.1007/978-0-387-92904-0_1.

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Harris, Russell. « Injection Molding Applications ». Dans Stereolithography, 243–55. Boston, MA : Springer US, 2011. http://dx.doi.org/10.1007/978-0-387-92904-0_10.

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Ovsianikov, Aleksandr, Maria Farsari et Boris N. Chichkov. « Photonic and Biomedical Applications of the Two-Photon Polymerization Technique ». Dans Stereolithography, 257–97. Boston, MA : Springer US, 2011. http://dx.doi.org/10.1007/978-0-387-92904-0_11.

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Arcaute, Karina, Brenda K. Mann et Ryan B. Wicker. « Practical Use of Hydrogels in Stereolithography for Tissue Engineering Applications ». Dans Stereolithography, 299–331. Boston, MA : Springer US, 2011. http://dx.doi.org/10.1007/978-0-387-92904-0_12.

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Bártolo, Paulo Jorge, et Ian Gibson. « History of Stereolithographic Processes ». Dans Stereolithography, 37–56. Boston, MA : Springer US, 2011. http://dx.doi.org/10.1007/978-0-387-92904-0_2.

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Munhoz, André Luiz Jardini, et Rubens Maciel Filho. « Infrared Laser Stereolithography ». Dans Stereolithography, 57–79. Boston, MA : Springer US, 2011. http://dx.doi.org/10.1007/978-0-387-92904-0_3.

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Bertsch, Arnaud, et Philippe Renaud. « Microstereolithography ». Dans Stereolithography, 81–112. Boston, MA : Springer US, 2011. http://dx.doi.org/10.1007/978-0-387-92904-0_4.

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Davis, Fred J., et Geoffrey R. Mitchell. « Polymeric Materials for Rapid Manufacturing ». Dans Stereolithography, 113–39. Boston, MA : Springer US, 2011. http://dx.doi.org/10.1007/978-0-387-92904-0_5.

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Corbel, Serge, Olivier Dufaud et Thibault Roques-Carmes. « Materials for Stereolithography ». Dans Stereolithography, 141–59. Boston, MA : Springer US, 2011. http://dx.doi.org/10.1007/978-0-387-92904-0_6.

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Stampfl, Jurgen, et Robert Liska. « Polymerizable Hydrogels for Rapid Prototyping : Chemistry, Photolithography, and Mechanical Properties ». Dans Stereolithography, 161–82. Boston, MA : Springer US, 2011. http://dx.doi.org/10.1007/978-0-387-92904-0_7.

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Actes de conférences sur le sujet "Stereolithographu"

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Jariwala, Amit S., Robert E. Schwerzel, Michael Werve et David W. Rosen. « Two-Dimensional Real-Time Interferometric Monitoring System for Exposure Controlled Projection Lithography ». Dans ASME/ISCIE 2012 International Symposium on Flexible Automation. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/isfa2012-7127.

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Stereolithography is an additive manufacturing process in which liquid photopolymer resin is cross-linked and converted to solid polymer with an ultraviolet light source. Exposure Controlled Projection Lithography (ECPL) is a stereolithographic process in which incident radiation, patterned by a dynamic mask, passes through a transparent substrate to cure a photopolymer layer that grows progressively from the substrate surface. In contrast to existing stereolithography techniques, this technique uses a gray-scale projected image, or alternatively a series of binary bit-map images, to produce a three-dimensional polymer object with the desired shape, and it can be used on either flat or curved substrates. Like most stereolithographic technologies, ECPL works in a unidirectional fashion. Calibration constants derived experimentally are fed to the software used to control the system. This unidirectional fabrication method does not, by itself, allow the system to compensate for minor variations, thereby limiting the overall accuracy of the process. We present here a simple, real-time monitoring system based on interferometry, which can be used to provide feedback control to the ECPL process, thus making it more robust and increasing system accuracy. The results obtained from this monitoring system provide a means to better visualize and understand the various phenomena occurring during the photopolymerization of transparent photopolymers.
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Kirschman, C. F., C. C. Jara-Almonte, A. Bagchi, R. L. Dooley et A. A. Ogale. « Computer Aided Design of Support Structures for Stereolithographic Components ». Dans ASME 1991 International Computers in Engineering Conference and Exposition. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/cie1991-0055.

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Abstract Stereolithography is a process used to rapidly produce polymer components directly from a computer representation of the part. Support structures, required for all parts built this way, are used to support a component during the build but are removed once building is complete. They anchor the component to the platform and prevent distortion, and are designed simultaneously with the component. A software package to aid the designer is under development at Clemson University. The Clemson Intelligent Design Environment for Stereolithography (CIDES) serves as an interface between the CAD systems and the SLA, cornbining utilities and research efforts. One aspect of this is the automatic support generation algorithm, which designs support structures using knowledge gained from experimentation and experts. The algorithm uses a stereolithographic format representation of a part and gives the user several design options. It then produces both base and projection supports. Output is in slice-ready form.
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Divjak, Alan, Mile Matijević et Krunoslav Hajdek. « Review of photopolymer materials in masked stereolithographic additive manufacturing ». Dans 11th International Symposium on Graphic Engineering and Design. University of Novi Sad, Faculty of technical sciences, Department of graphic engineering and design, 2022. http://dx.doi.org/10.24867/grid-2022-p46.

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Among the many types of additive manufacturing, stereolithography (SLA) stands out as one of the most versatile technologies, especially in the production of large prototypes of extremely high surface quality. The basic working principle of this technology has not changed for almost thirty years, but the recent rapid development of the mask-based variant of stereolithographic 3D printing technology (MSLA) has significantly increased its popularity and made it available to a wider range of users. This is especially true for MSLA 3D printers that use liquid crystal displays (LCD) for mask forming. These 3D printers are characterized by large build volume, high resolution and speed of model production, and low price. These factors make them extremely attractive for rapid prototyping or small-scale serial production. However, although they are superior to classical laser-based stereolithography in many technical aspects, their current main drawback is the smaller range of available materials. The development of modern stereolithographic technology has clearly shown that the capabilities of 3D printers themselves are just as important as the materials from which the models are made, the diversity of their mechanical characteristics, available colours, and optical properties. The materials used in all variants of SLA technology are liquid thermoset polymers that are sensitive to UV light (photopolymers). A wide range of areas of application requires a wide range of materials that meet the specific needs of each application. MSLA, as a newer technology, still does not have the same range of materials as 3D printers based on the laser variant of stereolithography. The situation is significantly improving with the increase in the number of available MSLA 3D printers, their popularity, and improved technical characteristics, and it can be said that this is the last step in legitimizing MSLA technology as a competitor to laser stereolithography. The aim of this paper is to analyse the material market for MSLA technology, categorize the supply of materials and objectively compare the available materials with those offered by reputable manufacturers of materials for classic SLA 3D laser printers. Special emphasis is placed on the quality and scope of technical specifications of MSLA materials, which is crucial for their professional use. In addition, the impact of thermoset polymers on user health and the environment is an especially important topic, so an overview of plant-based materials was also made.
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Gaspar, Jorge, et Paulo Jorge Ba´rtolo. « Metallic Stereolithography ». Dans ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59418.

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The rising of consumers’ demands and an ever increasing pressure of international markets imposed a deep change in the product development process to respond to an increasing product complexity and higher quality, as well to the need to promptly introduce products into the market. Stereolithography plays an important role on this new product development context. This technology produces models for thermosetting resins through a polymerisation process that transforms liquid resins into solid materials. In this work, a new route to produce metallic parts through stereolithography is explored. The curing analysis of hybrid reinforced polymeric systems, polymerised through radicalar or/and cationic mechanisms, is investigated. The rheological behaviour of these polymeric systems is also evaluated due to its importance for recoating. The influence of other processing and material characteristics like light intensity, initiator concentration, powder size of metallic powders, degree of dilution, etc. is also investigated.
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Satoh, Saburoh, Takao Tanaka, Satoshi Ihara et Chobei Yamabe. « Excimer lamp stereolithography ». Dans Symposium on High-Power Lasers and Applications, sous la direction de Henry Helvajian, Koji Sugioka, Malcolm C. Gower et Jan J. Dubowski. SPIE, 2000. http://dx.doi.org/10.1117/12.387563.

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Partanen, J. P. « Enhanced Resolution of Stereolithography ». Dans Proceedings of European Meeting on Lasers and Electro-Optics. IEEE, 1996. http://dx.doi.org/10.1109/cleoe.1996.562554.

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van Niekerk, G. Jaco, et Elizabeth M. Ehlers. « Intelligent stereolithography file correction ». Dans Intelligent Systems and Smart Manufacturing, sous la direction de Bhaskaran Gopalakrishnan et Angappa Gunasekaran. SPIE, 2000. http://dx.doi.org/10.1117/12.403686.

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Mueller, Thomas J. « Stereolithography in Product Development ». Dans Earthmoving Industry Conference & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 1990. http://dx.doi.org/10.4271/900879.

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Teo, Elizabeth, Yun Jie Pang, Yu Xie, Pheeraphat Ratchakitprakarn, Rebekah Low et Stylianos Dritsas. « Stereolithography with Randomized Aggregates ». Dans CAADRIA 2019 : Intelligent & Informed. CAADRIA, 2019. http://dx.doi.org/10.52842/conf.caadria.2019.2.323.

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Partanen, Jouni P. « Enhanced resolution of stereolithography ». Dans Photonics East '96, sous la direction de Pierre Boulanger. SPIE, 1997. http://dx.doi.org/10.1117/12.263340.

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Rapports d'organisations sur le sujet "Stereolithographu"

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Smith, R. E. Stereolithography models. Final report. Office of Scientific and Technical Information (OSTI), mars 1995. http://dx.doi.org/10.2172/36799.

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Chambers, R. S., T. R. Guess et T. D. Hinnerichs. A phenomenological finite element model of stereolithography processing. Office of Scientific and Technical Information (OSTI), mars 1996. http://dx.doi.org/10.2172/212696.

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Lange, Fred F. Beta Site Testing of the SRI Stereolithography Machine. Fort Belvoir, VA : Defense Technical Information Center, janvier 1999. http://dx.doi.org/10.21236/ada416673.

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Paxton, Joseph. Management and Operation of the Production Engineering Division Stereolithography (SL) Laboratory. Fort Belvoir, VA : Defense Technical Information Center, septembre 2001. http://dx.doi.org/10.21236/ada399694.

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Paxton, Joseph. Management and Operation of the Production Engineering Division Stereolithography (SL) Laboratory. Fort Belvoir, VA : Defense Technical Information Center, juin 1998. http://dx.doi.org/10.21236/ada347348.

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Ruelas, Samantha. Optimization of PDMS Photoresin for Three-Dimensional Printng via Projection Micro-Stereolithography. Office of Scientific and Technical Information (OSTI), juin 2018. http://dx.doi.org/10.2172/1460080.

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Hosseini, Neda. Stereolithographic Fabrication of a Flow Cell For Improved Neurochemical Sensor Testing. Office of Scientific and Technical Information (OSTI), août 2018. http://dx.doi.org/10.2172/1481062.

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Eshelman, Hannah V. Mask Projection Stereolithography for Manufacturing Ceramic Parts for CO2 Capture and Sequestration. Office of Scientific and Technical Information (OSTI), mars 2019. http://dx.doi.org/10.2172/1544952.

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Tancred, James A. ROTATESTL : A MATLAB Rotation Algorithm for the Analysis of Computational Meshes in Stereolithography File Format. Fort Belvoir, VA : Defense Technical Information Center, septembre 2012. http://dx.doi.org/10.21236/ada568671.

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Higgins, Callie, Jason Killgore et Dianne Poster. Report from the Photopolymer Additive Manufacturing Workshop : Roadmapping a Future for Stereolithography, Inkjet, and Beyond. National Institute of Standards and Technology, janvier 2021. http://dx.doi.org/10.6028/nist.sp.1500-17.

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