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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.
Get Price2018-7-23 · 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 ...
Get Price2019-12-1 · 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 ...
Get PriceThis 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.
Get Price2010-3-23 · 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.
Get Price2019-5-25 · To fabricate a photonic crystal with large and complete photonic bandgap, it often requires backfilling of high index inorganic materials into a 3D polymer template. However, the pore network may become disconnected before the template is completely filled in a conformal coating process, which, therefore, limits the achievable maximum bandgap in the 3D photonic crystals. Here, we demonstrate ...
Get Price2020-9-1 · Three-dimensional printing (3D printing) includes a set of processes that link controlled materials together to build a 3D object. This process is typically performed layer by layer . In another definition, 3D printing refers to any process by which 3D objects are formed when layers are fused in a row in a two-dimensional cross-section.
Get Price2020-5-6 · 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.
Get Price2015-7-1 · Zhu et al. endowed hydrophilicity and protein resistance to hydrophobic poly(vinylidene fluoride) (PVDF) membranes by simply blending a multi-arm amphiphilic star polymer (PEG derived) with PVDF. The star polymer blended membranes exhibited lower static protein adsorption and higher protein solution fluxes than pure PVDF membranes . As another common surface modification strategy, …
Get Price2014-11-22 · 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.
Get PriceThree-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 ...
Get Price2019-1-16 · Three-dimensional piezoelectric polymer microsystems for vibrational energy harvesting, robotic interfaces and biomedical implants ... Two-dimensional materials in functional three-dimensional ...
Get Price2009-9-13 · 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 ...
Get Price2021-4-19 · 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.
Get PriceAn 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.
Get Price2011-2-22 · 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, …
Get Price2019-2-26 · 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 …
Get Price2016-12-1 · 1. Introduction. Three-dimensional (3D) printing technology is positioned to become a key part of a third industrial revolution , , .Current 3D printing technology uses mostly selective laser sintering (SLS), fused deposition modeling (FDM), and digital light processing (DLP) forming methods , .FDM is used universally; common printing strip materials include acrylonitrile butadiene styrene ...
Get PricePolymer 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 …
Get PriceAn 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 ...
Get Price2014-3-7 · 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.
Get Price2018-9-28 · 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 …
Get Price2021-6-9 · 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
Get PriceThe effect of three-dimensional morphology on the efficiency of hybrid polymer solar cells. Oosterhout SD(1), Wienk MM, van Bavel SS, Thiedmann R, Koster LJ, Gilot J, Loos J, Schmidt V, Janssen RA. Author information: (1)Molecular Materials and Nanosystems, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands.
Get PricePhotoacoustic (PA) imaging with functional nanoprobes in the second near-infrared region (NIR-II, 1000–1700 nm) has aroused much interest due to its deep tissue penetration and high maximum laser permissible exposure. However, most NIR-II PA imaging is performed using the two-dimensional …
Get PriceIndirect three-dimensional printing of synthetic polymer scaffold based on thermal molding process. Park JH(1), Jung JW, Kang HW, Cho DW. Author information: (1)Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Korea.
Get Price2020-12-24 · 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.
Get Price2020-8-17 · Right from the early days, polymer materials have been discovered as being beneficial for various applications but a poor understanding of these materials greatly handicapped their usage. However, with a change in this trend, polymer materials have gradually displaced other materials in most applications. In recent times, due to improved research and knowledge, polymer-based materials are …
Get Price2018-7-23 · 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 ...
Get PriceThe use of (bio)degradable polymers, especially in medical applications, requires a proper understanding of their properties and behavior in various environments. Structural elements made of such polymers may be exposed to changing environmental conditions, which may cause defects. That is why it is so important to determine the effect of processing conditions on polymer properties and also ...
Get Price2005-9-25 · For example, we have produced oriented polymer materials by directional freezing of solutions of polystyrene in cyclohexane (Supplementary Information, Fig. S5) and polycaprolactone (PCL) in ...
Get Price2013-9-1 · Hard biological materials such as diatoms and sea sponges can inspire the design of structural materials that are mechanically robust yet lightweight. …
Get PriceThree-dimensional (3D) writing is a promising approach to realize stretchable electronics, but is so far limited to microscale features. We developed accurate 3D writing for highly stretchable organic nanowire arrays using a nanoscale polymer meniscus.
Get Price2021-6-9 · Molecular parameters of the three-dimensional network The swelling ratio and polymer volume fraction in the swollen state can be measured through equilibrium swelling experiment.13 Then the molecular weight and the mesh size can then be obtained by a theoretical model for swelling of polymer hydrogels.27 Indeed, the structure of hydrogels can be analyzed by the Flory-Rehner theory ...
Get Price2020-5-6 · 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.
Get Price2000-8-31 · three-dimensional internal struc-tural network of highly crosslinked polymer chains. And the final product is insoluble and not ther-mally reformable. Elastomers share characteris-tics of thermoplastics and thermosets. Elastomers begin as thermoplastic polymers with discrete chains that later develop a network of covalent crosslinks.
Get Price2018-7-23 · 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 ...
Get PriceN2 - Motivated by the unique structure and outstanding properties of graphene, three-dimensional (3D) graphene-based polymer nanocomposites (3D-GPNCs) are considered as new generation materials for various multi-functional applications. This review presents an overview of the preparation, properties and applications of 3D-GPNCs.
Get Price2014-3-7 · 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.
Get Price2019-5-25 · Three-Dimensional, Bifunctional Microstructured Polymer Hydrogels Made from Polyzwitterions and Antimicrobial Polymers Vania Tanda Widyaya Bioactive Polymer Synthesis and Surface Engineering Group, Department of Microsystems Engineering (IMTEK) and Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), Albert-Ludwigs ...
Get Price2021-3-10 · 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 ...
Get PriceAdditive interface materials for improved ionic polymer metal composite (IPMC) actuator performance are being investigated. In this study, three-dimensional carbon nanostructure/copper nanowire (3DC Cu-NW) with a novel structure was synthesized via low-pressure chemical vapor deposition. An IPMC actuator with a 3DC Cu-NW interface layer was fabricated, which exhibited improved actuation ...
Get Price2019-2-15 · Three-dimensional interconnected graphene microsphere as fillers for enhancing thermal conductivity of polymer Chemical Engineering Journal ( IF 10.652) Pub Date : 2019-02-15, DOI: 10.1016/j.cej.2019.02.110
Get Price2020-5-6 · Monitoring the evolution of polymer aging, especially early-stage aging, over both time and dimensionality can provide in-depth insight into aging-induced material invalidation and even disastrous accidents. However, it remains a great challenge because currently available methods for polymer aging only provide statistic results at a macroscopic scale. Herein, we report the first three ...
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