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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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  • Scalable Three-Dimensional Photobioelectrodes Made

    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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  • Three dimensional nanosuperstructures made of two ...

    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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  • Superwetting Polymeric Three Dimensional (3D)

    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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  • Electrically Tunable Three-Dimensional Holographic ...

    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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  • 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. Photo-curable resins are one example which is 3D printed by SLA. The high crosslinking density provides good thermal stability, while the high resolution offers a …

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  • Three-Dimensional Printed and Biocompatible

    2021-1-20 · As the field of 3D printing continues to enable the fabrication of biomedical materials and devices, there is increasing demand for the development of biocompatible functional materials with tailorable properties. Here, we utilized a desktop 3D printer to fabricate porous structures of electrically conductive polymer composites comprised of multiwalled carbon nanotubes (MWCNTs) in a matrix of ...

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  • The potential of three-dimensional printing

    2019-4-1 · A polymer is stored in a mobile vat/holder. The vat travels up or down following a light/laser source which polymerizes the polymer layer-by-layer (or continuously) into a three-dimensional structure. Polymers Ceramics: Fine resolution High quality: Limited materials Difficult workability Expensive technology: 5–10 , , Inkjet printing

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  • Printing of three-dimensional polymer composite

    2020-1-1 · It can therefore be used as an instrument for the development or selection of the correct strand material or for quality monitoring. A total of 20 quality criteria are considered for this purpose, regardless of the fiber and polymer materials used. These are divided into the three quality clusters “geometry”, “composite”, and “mechanics”.

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  • Three‐Dimensional Photomobility of Crosslinked

    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 thermal nanoimprinting by using

    We used a three-dimensional (3D) mold to produce multiheight structures made of polymer resin and, without using an etching process, we succeeded in fabricating 3D structures made of polymer resin in which no region carried a residual layer. We used such a structure, fabricated on a glass plate, to perform a calibration of layer-total internal ...

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  • Three-Dimensional Constitutive and Failure Modeling of ...

    Three polymer concrete materials (epoxy types) were con­ sidered to obtain the material constants associated with the proposed constitutive model. These are (a) a low-modulus epoxy, (b) a medium-modulus epoxy, and ( c) a high-modulus epoxy. Its application to these materials that were tested by Kelsey (12) is presented.

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  • Flexible Sensor based on Three Dimensional Polymer ...

    Flexible Sensor based on Three Dimensional Polymer Nanocomposites ... have attracted much attention to satisfy the material requirements for flexible sensors. Much progress has been made in this field with varying degree of success, however, if the material was effectively used as reinforcement, proper dispersion of CNTs into the polymer ...

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  • Fabrication and deformation of three-dimensional hollow ...

    2014-8-6 · Fabrication and deformation of three-dimensional hollow ceramic nanostructures Dongchan Jang1, Lucas R. Meza1, Frank Greer2 and Julia R. Greer1,3* Creating lightweight, mechanically robust materials has long been an engineering pursuit. Many siliceous skeleton species— such as diatoms, sea sponges and radiolarians—have remark-

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

    2019-10-30 · This Prospective covers an overview of the injection molding process and the importance of mold design and tooling considerations, important material requirements and thermal properties for molds, polymer material requirements for injection molding, mold flow analysis, and the promise of using the 3D printing process for mold fabrication. The second part demonstrates the injection molding ...

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  • High-energy-density, all-solid-state

    Novel all-solid-state microsupercapacitors (MSCs) with three-dimensional (3D) electrodes consisting of active materials (i.e., graphene or activated carbon (AC) particles) and polymer electrolyte (PE) designed for high-energy-density storage applications were fabricated and tested in this work.

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  • Three‐Dimensional Writing of Conducting Polymer

    2011-2-22 · Accurate and versatile three-dimensional writing of individually controlled conducting polymer nanodevices forming dense arrays is demonstrated by guiding a monomer meniscus in pulling a micropipette during oxidative polymerization. We specifically demonstrate well-defined dense arrays of various freestanding nanocomponents with controlled radius down to ∼50 nm: straight wires, …

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  • (PDF) Three-Dimensional Discrete Element Modeling

    Three-Dimensional Discrete Element Modeling of Micromechanical Bending Tests of Ceramic–Polymer Composite Materials.pdf Available via license: CC BY-NC-ND 3.0 Content may be subject to copyright.

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  • Three new 3D printing technologies for composites ...

    2018-7-31 · Part of research outputs has been patented, and the results on the flexible sensor using three dimensional polymer nanocomposites were published in Composites Science and Technology. The project was supported by the National Nature ScienceFoundation of China, the National 1000-TalentProgram, as well as the Research Fund from the Alliance of Special FineChemical Innovation …

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  • Three-Dimensional Structure of a Nanocomposite

    2019-5-25 · The three-dimensional (3D) morphology of particulate fillers embedded in a rubbery matrix was examined by transmission electron microtomography (TEMT). Two types of nanofillers, i.e., carbon black (CB) and silica (Si) nanoparticles, were used as the nanofillers. Although the CB and Si nanoparticles were difficult to distinguish by conventional transmission electron microscopy (TEM), …

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  • Electrochemically building three-dimensional ... - Polymer

    2019-2-26 · Electrochemically building three-dimensional supramolecular polymer hydrogel for flexible solid-state micro-supercapacitors Xiang Chu a, Haichao Huang a, Haitao Zhang a, **, Hepeng Zhang a, Bingni Gu a, Hai Su a, Fangyan Liu a, Yu Han a, Zixing Wang a, Ningjun Chen a, Cheng Yan a, Wen Deng a, Weili Deng a, Weiqing Yang a, b, * a Key Laboratoryof Advanced Technologiesof Materials …

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  • A smart scaffold composed of three-dimensional printing ...

    2020-12-10 · A smart scaffold composed of three-dimensional printing and electrospinning techniques and its application in rat abdominal wall defects Zhi Yang1†, Zhicheng Song2†, Xin Nie2, Kaijin Guo1* and Yan Gu2* Abstract Background: Biological composite scaffolds are increasingly being used in abdominal wall reconstruction but still have certain ...

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  • The effect of three-dimensional morphology on the ...

    2009-9-13 · The efficiency of polymer solar cells critically depends on the intimacy of mixing of the donor and acceptor semiconductors used in these devices to create charges and on the presence of ...

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  • Three‑dimensional scaffolds for tissue engineering ...

    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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  • Investigating the Role of Surface Materials and Three ...

    2016-6-30 · When changing to three-dimensional culture the cells became increasingly activated in terms of IL6, IL8, IL10 and CCR5 gene expression. Further stimulation with LPS resulted in a slight increase in the expression of maturation markers (SLA-DRB1, CD86 and CD40) as well as cytokines (IL6, IL8, IL10 and IL23A) but the influence of the surfaces was ...

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  • Finite element and experimental analyses of polymer

    Dental bridges made of polymer materials reveal only low loading capacity. This paper analyzes possible improvements of the loading capacity of polymer-based dental bridges reinforced by incorporated ceramic bars. Finite element (FE) analyses were performed to study the stress distribution caused by the mastication process in the bridge material.

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  • Polymer Hydrogels and Their Applications

    2017-6-10 · on their flow behavior in steady-state [8]. For food materials and biomaterials, gels and the hydrogels terms are used mutually. Rosiak et al define hydrogel as the three-dimensional network structures obtained from synthetic or natural polymers that absorb and retain large amount of water [9]. Hydrogels have various types of physical forms viz.

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  • Three-dimensional visualisation of soft biological ...

    The vessel wall is more X-ray-dense than the supporting paraffin. There is no evidence of mechanical damage. Scale bar: 100 µm. (B) Segmented region from A. Boundaries between the lumen and wall (blue line), media and adventitia (green and red lines), and adventitia and external paraffin (red line) are highlighted. Scale bar: 50 µm.

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  • Smart Manufacturing Process of Carbon-Based Low ...

    2020-7-22 · Three-dimensional arrangement of carbon fibers can also be realized using AM techniques. Lewicki et al. (Ref 81) fabricated three-dimensional carbon fiber/polymer composite using a DIW technique with a high degree of fiber alignment. It was observed that 8 wt.% reinforcement of carbon fiber yields a high resolution in the fabricated part.

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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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  • Composite materials for biomedical applications: a review

    2018-5-10 · The hard dental tissues, mainly enamel and den-tine, are natural composites made of collagen and hydroxyapatite (HA) microcrystals. The use of composites materials in dentistry, mainly polymeric matrix composites, has considerably grown in the last years substituting in some cases more tradition-al materials. Polymer matrix composites are used in

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  • 3D printed 'dumbbell molecules' at Dartmouth

    2021-6-10 · Researching ways to make smart materials capable of autonomous, and often sensory, behaviour The Ke Functional Materials Group at Dartmouth College …

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  • Introduction to Composite Materials

    2013-11-24 · 4 Structural Composite Materials composites, with an emphasis on continuous- fiber, high-performance polymer composites. 1.1 Isotropic, anisotropic, and Orthotropic Materials Materials can be classified as either isotropic or anisotropic. Isotropic materials have the same material properties in all directions, and normal

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  • Materials Used in Selective Laser Melting (SLM) -

    Selective Laser Melting (SLM) refers to the additive manufacturing (AM) process that builds up a complex three-dimensional (3D) object by using a laser beam to melt powder materials [1]. SLM has been considered one of the most versatile technologies as it can process a wide variety of materials, particularly metals and alloys [2].

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  • Micro-architectured materials: past, present and

    2010-6-30 · The two-dimensional Kagome lattice and its three-dimensional equivalent have particular promise, along with tubes of walls made from a fully triangulated lattice. Multi-functional applications of lattice materials require combinations of properties, such as high stiffness and toughness at low density.

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  • Physical and Biological Properties of a Chitosan

    2021-1-25 · Three-Dimensional Cell Culture: Cell Adhesion Assay A volume of 1 ml of chitosan pregel (chitosan solution+crosslinker) was placed at the bottom of a 35 mm diameter culture plate. The mixture in the plates was homogenized in a shaker and incubated in a humid atmosphere containing 5% CO 2 , at 37°C, for 10 minutes to allow hydrogel formation.

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  • THE JEC COMPOSITES INNOVATION AWARDS 2021

    2021-5-11 · Paris, May 11, 2021 – JEC Innovation Awards celebrate the fruitful cooperation between players of the composite community. Started in 1996, the JEC Innovation Awards have, over the past 24 years, brought in 1,900 companies worldwide. 198 companies and 475 partners have been rewarded for the excellence of their composite innovations.…

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  • Low-dimensional nanomaterials for antibacterial ...

    Dimensionality is an important asset of nanomaterials, which can change the intrinsic properties of the materials. Low dimensional materials including 0-D (zero-dimensional), 1-D (one-dimensional), 2-D (two-dimensional) and 3-D (three-dimensional) nanomaterials have attracted the interest of materials physicists and chemists owing to their ...

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  • The Buckling of Sandwich-Type Panels | Journal of the ...

    2012-8-30 · A novel two-dimensional finite element to study the instability phenomena of sandwich plates. ... Journal of Engineering Materials and Technology, Vol. 128, No. 3. ... Polymer Engineering and Science, Vol. 34, No. 9. Low density rigid foam materials, sandwich construction and design methods ...

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  • Dental Polymers | Pocket Dentistry

    2021-7-5 · Soelberg is the leading manufacturer of 3D wall panels, acoustic panels, decorative wood paneling and wall tiles for high impact design. Life in 3D.

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  • Soelberg | 3D Wall Panel Solutions for a three

    2010-7-24 · three-dimensional (3D) polymer microstructure. The technique integrates 3D direct writing of heterogeneous microstructures with nanoparticle synthesis. A digital micromirror device is employed as a dynamic mask in the digital projection photopolymerization process to build the heterogeneous microstructure layer by layer.

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  • Three-dimensional selective growth of nanoparticles on a ...

    2009-3-13 · Arbitrary three-dimensional micro-fabrication by polymer grayscale lithography Arbitrary three-dimensional micro-fabrication by polymer grayscale lithography Jiang, Li; Korivi, N. S. 2009-03-13 00:00:00 We report on the continuing development of a grayscale lithography technique based on the use of a polymeric grayscale photomask. . Arbitrary three-dimensional (3D) microstructures can be ...

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  • Arbitrary three-dimensional micro-fabrication by

    Three-dimensional reconstruction of porous polymer films from FIB-SEM nanotomography data using random forests Journal article, 2021 Combined focused ion beam and scanning electron microscope (FIB-SEM) tomography is a well-established technique for high resolution imaging and reconstruction of the microstructure of a wide range of materials.

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  • Three-dimensional reconstruction of porous polymer

    Revolutionary two-dimensional (2D) materials can be the basis to an entirely new industry for the 21st century. Almost all the technological developments of the 20th century were based on three-dimensional (3D) materials with special functionalities, namely semiconductors, magnets, superconductors, glasses, polymers and plastics. 2D materials represent a revolution and huge potential in terms ...

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  • 2-Dimensional Materials

    2009-10-17 · 1 The role of three-dimensional morphology on the efficiency of hybrid polymer solar cells Stefan D. Oosterhout1, Martijn M. Wienk1, Svetlana S. van Bavel2,3, Ralf Thiedmann4, L. Jan Anton Koster1, Jan Gilot1, Joachim Loos2, Volker Schmidt4 and René A. J. Janssen1∗ 1 Molecular Materials and Nanosystems, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The …

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  • The role of three-dimensional morphology on the

    Lecture 9 Dental materials dr. Hiba Essam Polymer: a chemical compound consisting of a large organic molecule with high molecular weight (macromolecule) formed by the union of many (poly) smaller repeating units (mers). In some cases the repetition is linear, in other cases the chains are branched or inter connected to form three dimensional networks, the repeat units of polymer is called ...

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  • dm 9 - Lecture 9 Dental materials dr Hiba Essam

    2021-1-25 · Three-Dimensional Cell Culture: Cell Adhesion Assay A volume of 1 ml of chitosan pregel (chitosan solution+crosslinker) was placed at the bottom of a 35 mm diameter culture plate. The mixture in the plates was homogenized in a shaker and incubated in a humid atmosphere containing 5% CO 2 , at 37°C, for 10 minutes to allow hydrogel formation.

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  • Physical and Biological Properties of a Chitosan

    MATERIALS SCIENCE Three-dimensional self-assembly using dipolar interaction Leon Abelmann1,2*, Tijmen A. G. Hageman1,2, Per A. Löthman1,2, Massimo Mastrangeli3, Miko C. Elwenspoek2 Interaction between dipolar forces, such as permanent magnets, generally leads to the formation of one-dimensional chains and rings.

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