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  • Accuracy of Three-Dimensional (3D) Printed Dental

    Digital impression devices are used alternatively to conventional impression techniques and materials. The aim of this study was to evaluate the precision of extraoral digitalization of three types of photosensitive resin polymers used for 3D printing with the aid of a digital extraoral optical scanner. The alignment of the scans was performed by a standard best-fit alignment.

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  • Dental Polymers | Pocket Dentistry

    2021-3-10 · Photobioelectrodes represent one of the examples where artificial materials are combined with biological entities to undertake semi-artificial photosynthesis. Here, an approach is described that uses reduced graphene oxide (rGO) as an electrode material. This classical 2D material is used to construct a three-dimensional structure by a template-based approach combined with a simple spin ...

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  • Scalable Three-Dimensional Photobioelectrodes Made

    2019-12-1 · Three-dimensional graphene foams derived from various templates through CVD have demonstrated high surface areas [59,60,152,153]. Those made of Ni foams offer a surface area up to 850 m 2 g −1, which can be modulated by tuning the number of layers deposited with different deposition time and flow rate . However, the intrinsic large pores of ...

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  • Three dimensional nanosuperstructures made of two ...

    2018-7-23 · An electrically tunable three-dimensional holographic photonic crystal made of polymer-dispersed liquid crystals was fabricated using a specially designed prism. This prism split a collimated laser beam into four beams which interfered with each other at the base of the prism to form a three-dimensional spatial light intensity pattern. The ...

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  • Electrically Tunable Three-Dimensional Holographic ...

    This review article reports the latest progress of polymeric three dimensional porous materials (3D-PMs) with super wettability to separate oil/water mixtures. The theories on developing super-wetting porous surfaces and the effects of wettability on oil/water separation have been discussed.

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  • Superwetting Polymeric Three Dimensional (3D)

    Publisher Summary. The dental air-turbine handpiece rapidly gained widespread acceptance by the dental profession after its introduction in the late 1950s and it continues to be used as the main means of carrying out cutting work in clinical dental practice, whether of tooth tissue or restorative materials.

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  • Dental Biomaterials | ScienceDirect

    2010-3-23 · Crosslinked liquid-crystalline polymer fibers containing azobenzene moieties show three-dimensional movements under photoirradiation (see figure). The direction of the photomobility of the fibers could be controlled by manipulating the actinic light source.

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  • Three‐Dimensional Photomobility of Crosslinked

    2020-5-6 · More importantly, the three-dimensional evolution for early-stage polymer aging was demonstrated: faster aggression in the horizontal plane (4.1 × 10 –4 s –1) than in the vertical direction (2.6 × 10 –9 m s –1) for PP films.

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  • A three-dimensional multilayer graphene web for

    2020-12-11 · Polymer International. Volume 70, Issue 7 p. 964-976. Mini-review. Three-dimensional chemical reactors: in situ materials synthesis to advance vat photopolymerization Daryl W Yee, Corresponding Author. ... We provide a brief overview of the materials that are currently accessible via VP and highlight recent advances in the field.

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  • Three‐dimensional chemical reactors: in situ materials ...

    2021-4-19 · We offer a 4-year PhD position in Three-dimensional bioprinting using electroactive polymer materials. The goal of the project is to understand the dynamics, sensing, control, and scalability of 3D-printed IEAPs, with a simplicity that enables application across scales.

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  • PhD position in Three-dimensional bioprinting using ...

    2021-6-9 · Article Small oligonucleotides detection in three-dimensional polymer network of DNA-PEG hydrogels. Alessia Mazzarotta1, Tania Mariastella Caputo1, Luca Raiola1, Edmondo Battista2 *, Paolo Antonio Netti1,2,3 , Filippo Causa2,3 1 Center for Advanced Biomaterials for [email protected], Istituto Italiano di Tecnologia (IIT), Largo Barsanti e Matteucci 53, 80125 Naples, Italy

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  • Article Small oligonucleotides detection in three ...

    Polymer Chemistry, volume 43 (2017) page 6617–6627. Go To Polymer Chemistry. Ashley R. Murphy, John M. Haynes, Andrew L. Laslett, Neil R. Cameron, Carmel M. O’Brien. Three-dimensional differentiation of human pluripotent stem cell-derived neural precursor cells using tailored porous polymer …

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  • Three-dimensional stem cell-derived neural culture

    An undercut depth of 0.01inch was created on the mesiobuccal surface of the premolar and distobuccal surface of second molar. Three dimensional finite element model of clasp assembly was designed and assigned with the properties of two different materials namely acetal resin and cobalt-chromium in successive steps.

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  • Comparison of Retention of Clasps Made of Different ...

    2021-1-3 · Achieving a viable process for three-dimensional (3D) printing of ceramics is a sought-after goal in a wide range of fields including electronics and sensors for harsh environments, microelectromechanical devices, energy storage materials, and structural materials, among others. Low laser absorption of ceramic powders renders available additive manufacturing (AM) technologies for …

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  • Three-Dimensional Printing of Ceramics through

    The present paper presents the three-dimensional in-plane and out-of-plane vibration analysis of linearly-tapered orthotropic disc of clamped-free boundary condition.

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  • Additive Manufacturing solutions & industrial 3D

    2021-1-28 · One of the grand challenges in materials science is the organization of matter from the molecular level, through the nano- and mesoscale domains, up …

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  • Additive Manufacturing Technology: Potential

    2014-11-22 · encompasses “dental.” ... the hundreds or thousands until a three-dimensional object emerges. Raw materials may be in ... 14 A polymer is a chemical compound made of small molecules that are arranged in a simple repeating struc-ture to form a larger molecule.

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  • Three-dimensional-printed molds and materials for ...

    2019-10-30 · Polymer materials are normally used in 3D-printed molds for low volume production. High-temperature resistance, toughness, and hardness are essential for printed molds to stand above the melting temperature of injected materials. ... Stratasys, 3D Printing and Dental Implants: ... Three-dimensional-printed molds and materials for injection ...

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  • Accuracy of three-dimensional dental resin models

    2018-3-6 · Recipient(s) will receive an email with a link to 'Accuracy of three-dimensional dental resin models created by fused deposition modeling, stereolithography, and Polyjet prototype technologies: A comparative study' and will not need an account to access the content.

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  • [PDF] Electrically Tunable Three-Dimensional

    An electrically tunable three-dimensional holographic photonic crystal made of polymer-dispersed liquid crystals was fabricated using a specially designed prism. This prism split a collimated laser beam into four beams which interfered with each other at the base of the prism to form a three-dimensional spatial light intensity pattern. The spatial light intensity pattern was then recorded ...

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  • Three-Dimensional Printable Nanoporous Polymer

    Three-Dimensional Printable Nanoporous Polymer Matrix Composites for Daytime Radiative Cooling ... Three-Dimensional Printable Nanoporous Polymer Matrix Composites for Daytime Radiative Cooling ... UV–vis, and part of the FTIR measurements were carried out in the Materials Research Laboratory Central Research Facilities, University of ...

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  • Three-dimensional nanostructuring of polymer

    2014-3-7 · Read 'Three-dimensional nanostructuring of polymer materials by controlled avalanche using femtosecond laser pulses, Proceedings of SPIE' on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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  • Three-dimensional printing of hierarchical liquid

    2020-6-1 · hree-dimensional (3D) scaffolds are commonly used for drug delivery,1,2 investigation of cell behavior and material studies in the field of tissue engineering.3–5 Three-dimensional scaffolds are typically porous, biocompatible and biodegradable materials that serve to provide suitable microenvironments, that is, mechanical support, physical,

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  • Three dimensional printed degradable and conductive ...

    2020-12-24 · Additive manufacturing is a revolutionary three-dimensional (3D) printing technology that has applications in a vast number of fields from aerospace to biological engineering. In the field of bioengineering, it was recently discovered that the principles used in 3D bioprinting of organs and tissues could also be used to 3D print biological materials produced by genetically engineered bacteria.

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  • What are Ceramic Matrix Composites? - L&L Special

    2018-8-30 · In the polymer infiltration and pyrolysis process, a low-viscosity polymer is infiltrated into a fabric (e.g., woven or tape) made from the ceramic reinforcing material. The infiltrated reinforcement material is then placed in an inert, oxygen-free atmosphere and heated. As it is heated, the polymer thermally decomposes into a ceramic.

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  • FDM 3D Printer Fused Deposition Modeling

    FDM Technology works with specialized 3D printers and production-grade thermoplastics to build strong, durable and dimensionally stable parts with the best accuracy and repeatability of any 3D printing technology. Stratasys founder Scott Crump invented FDM Technology more than 20 years ago, and Stratasys has continued to lead the 3D printing ...

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  • 3DEXPERIENCE Platform

    Material extrusion is known as Fused Filament Fabrication (FFF) and is one of the most popular processes for hobbyist-grade 3D printing. The proprietary term Fused Deposition Modeling (FDM) was coined by S. Scott Crump in the late 1980’s and was commercialized in 1990 by the Stratasys company.

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  • Gingival Microleakage of Class II Resin Composite ...

    2007-5-1 · Over the last few years, new dental products containing glass, polyethylene, quartz, carbon or other fibers have been made available. These products are meant to improve the mechanical properties of materials and provide extended applications for resin composites.23–30 They have a wide range of applications, including orthodontic treatment,31 such as splints for periodontally-involved teeth ...

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  • Hydroxyapatite reagent grade, powder, synthetic |

    Express Polymer Letters, 4(9), 517-528 (2010) ... Conventional dental materials like amalgam and composite resins have inherent disadvantages. Read More. Three-Dimensional Printing of Tissue Engineering Scaffolds. We will explore the technological advances that have contributed toward the progress of 3DP of tissue engineering scaffolds, current ...

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  • sikemia.com - SiKÉMIA

    The strategy of covalent crosslinking is used in technologies of commercial and scientific interest to control and enhance properties of the resulting polymer system or interface, such as thermosets and coatings. Crosslinking is also the formation of chemical links between molecular chains to form a three-dimensional network of connected molecules.

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  • US5554336A - Method and apparatus for production

    A system for generating three-dimensional objects by creating a cross-sectional pattern of the object to be formed at a selected surface of a fluid medium capable of altering its physical state in response to appropriate synergistic stimulation by impinging radiation, particle bombardment or chemical reaction, successive adjacent laminae, representing corresponding successive adjacent cross ...

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  • Metal-Matrix Composites | Machine Design

    2002-11-15 · Metal-matrix composites are either in use or prototyping for the Space Shuttle, commercial airliners, electronic substrates, bicycles, automobiles, golf clubs, and a variety of other applications.

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  • 3D Printing Service for Online Manufacturing | 3D

    2021-7-5 · The Power of On Demand. Whether you need a prototype, verification of a design or an appearance model, or are looking for low-volume or bridge manufacturing, 3D Systems On Demand can help you with parts produced in as fast as 24 hours. 100. Application engineers on staff.

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  • Asia-Pacific: Manufacturing the Future | Features | Feb ...

    A method of creating real three-dimensional models by using lasers driven by CAD software. In contrast to the normal practice of removing material, this process polymerizes a liquid to quickly produce shapes that are untouched by human hands or cutting tools. Also known as three-dimensional imaging and three-dimensional modeling.

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  • Visualisation of the three-dimensional structure of ...

    A review of imaging techniques which can be used to acquire three dimensional data on polymer composite materials is presented. The techniques chosen utilise a variety of contrast forming mechanisms including x-ray, nuclear magnetic resonance and optical & electron microscopy. Discussion is illustrated with reference to a particular HMX based UK PBX.

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  • Metal-Matrix Composites | Machine Design

    2002-11-15 · Metal-matrix composites are either in use or prototyping for the Space Shuttle, commercial airliners, electronic substrates, bicycles, automobiles, golf clubs, and a variety of other applications.

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  • Three-dimensional constitutive model of woven fabric ...

    2018-9-28 · Three-dimensional constitutive model of woven fabric-reinforced shape memory polymer composites considering thermal residual stress Seok Bin Hong1, Joon Hyeok Jang1, Haedong Park2, Jin-Gyun Kim3, Nam Seo Goo4 and Woong-Ryeol Yu1 1Department of Materials Science and Engineering and Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul …

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  • Asia-Pacific: Manufacturing the Future | Features | Feb ...

    A method of creating real three-dimensional models by using lasers driven by CAD software. In contrast to the normal practice of removing material, this process polymerizes a liquid to quickly produce shapes that are untouched by human hands or cutting tools. Also known as three-dimensional imaging and three-dimensional modeling.

    Get Price
  • Electron Conductive Three-Dimensional Polymer of

    2006-2-22 · Single crystals of three-dimensional (3D) C 60 polymer were prepared by the topotactic conversion of two-dimensional (2D) C 60 polymer single crystals at a pressure of 15 GPa at 600 °C. The x-ray single crystal study revealed that the 3D C 60 polymer crystallized in a body centered orthorhombic space group I m m m, and spherical C 60 monomer units were substantially deformed to rectangular ...

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  • Hydroxyapatite reagent grade, powder, synthetic |

    Express Polymer Letters, 4(9), 517-528 (2010) ... Conventional dental materials like amalgam and composite resins have inherent disadvantages. Read More. Three-Dimensional Printing of Tissue Engineering Scaffolds. We will explore the technological advances that have contributed toward the progress of 3DP of tissue engineering scaffolds, current ...

    Get Price
  • Three-dimensional superlattice engineering with block ...

    2020-6-19 · Three-dimensional (3-D) structures at the nanoscale are important in modern devices, although their fabrication with traditional top-down approaches is …

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  • The Basic Additive Manufacturing Process 131

    The Basic Additive Manufacturing Process discusses the general steps involved in most additive manufacturing (AM) procedures. Important steps include creating 3D computer models, converting those models to AM compatible file formats, setting up and running an AM machine, and part removal and post-processing. The manufacturing industry is progressively finding AM to be an important resource in ...

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  • Additive Manufacturing Review: Early Past to Current ...

    The review also addresses design issues and the commercial state of the art for production of polymer, metal, and ceramic parts. ... Medium and Apparatus for Producing Three-dimensional Figure Product,” U.S. Patent 4,041,476. 29. Schwerzel, R. E., Wood, V. E., McGinniss, ... Robust Design of Cellular Materials With Topological and Dimensional ...

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