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显示 1-30 共 31 条结果 关于 "511447" 范围 论文
Ursula Simon et al.
Journal of separation science, 44(6), 1078-1088 (2020-09-09)
Three-dimensional printing applications in separation science are currently limited by the lack of materials compatible with chromatographic operations and three-dimensional printing technologies. In this work, we propose a new material for Digital Light Processing printing to fabricate functional ion exchange
Daniela Espinosa-Hoyos et al.
Scientific reports, 8(1), 478-478 (2018-01-13)
Myelination is critical for transduction of neuronal signals, neuron survival and normal function of the nervous system. Myelin disorders account for many debilitating neurological diseases such as multiple sclerosis and leukodystrophies. The lack of experimental models and tools to observe
Angelo Romano et al.
Macromolecular rapid communications, 41(10), e2000084-e2000084 (2020-04-17)
The light responsivity of ortho-nitrobenzyl esters (o-NBE) is exploited to inscribe µ-scale 2.5D patterns in thiol-ene networks by direct laser writing. For this purpose, a multifunctional thiol and a photosensitive alkene with an o-NBE chromophore are cured upon visible light
Maria Salem Ibrahim et al.
Materials (Basel, Switzerland), 11(9) (2018-08-29)
Dental sealants with antibacterial and remineralizing properties are promising for caries prevention among children and adolescents. The application of nanotechnology and polymer development have enabled nanoparticles of amorphous calcium phosphate (NACP) and dimethylaminohexadecyl methacrylate (DMAHDM) to emerge as anti-caries strategies
Shohei Habasaki et al.
Small (Weinheim an der Bergstrasse, Germany), 11(48), 6391-6396 (2015-11-10)
A microfluidics-based method for the 3D fabrication of anisotropic particles is reported. The method uses a vertical microchannel where tunable light patterns solidify photocurable resins for stacking multiple layers of the resins, thus enabling an application of stereolithography concepts to
Mauricio Castellanos et al.
The journal of adhesive dentistry, 21(1), 67-76 (2019-02-26)
To evaluate the light transmittance of ceramic veneers of different thicknesses and verify their influence on the degree of conversion, color stability, and dentin bond strength of light-curing resin cements containing different photoinitiator systems. Experimental resin cements were fabricated containing
Michael J Beauchamp et al.
Micromachines, 9(7) (2018-11-15)
Interest has grown in recent years to leverage the possibilities offered by three-dimensional (3D) printing, such as rapid iterative changes; the ability to more fully use 3D device volume; and ease of fabrication, especially as it relates to the creation
Dorothee Ehrhardt et al.
Polymers, 12(11) (2020-11-05)
Two reversible polymer networks, based on Diels-Alder cycloadditions, are selected to discuss the opportunities of mobility-controlled self-healing in ambient conditions for which information is lacking in literature. The main methods for this study are (modulated temperature) differential scanning calorimetry, microcalorimetry
Wenlian Qiu et al.
ACS applied materials & interfaces, 11(32), 29268-29275 (2019-07-25)
Spiropyran is an important mechanophore, which has rarely been incorporated as a cross-linker in polar polymer matrices, limiting its applications in innovative mechanochromic devices. Here, three spiropyrans with two- or three-attachment positions were synthesized and covalently bonded in polar poly(hydroxyethyl
Cristina P Martin Linares et al.
Soft matter, 16(38), 8782-8798 (2020-08-20)
This study investigated the effect of alignment on the rate-dependent behavior of a main-chain liquid crystal elastomer (LCE). Polydomain nematic LCE networks were synthesized from a thiol-acrylate Michael addition reaction in the isotropic state. The polydomain networks were stretched to
Jia Liu et al.
Proceedings of the National Academy of Sciences of the United States of America, 117(26), 14769-14778 (2020-06-17)
Electrophysiological mapping of chronic atrial fibrillation (AF) at high throughput and high resolution is critical for understanding its underlying mechanism and guiding definitive treatment such as cardiac ablation, but current electrophysiological tools are limited by either low spatial resolution or
Dibakar Mondal et al.
Materials science & engineering. C, Materials for biological applications, 118, 111400-111400 (2020-12-02)
The mechanical properties and biocompatibility of nanocomposites composed of Acrylated Epoxidized Soybean Oil (AESO), nano-Hydroxyapatite (nHA) rods and either 2-Hydroxyethyl Acrylate (HEA) or Polyethylene Glycol Diacrylate (PEGDA) and 3D printed using extrusion-based additive manufacturing methods were investigated. The effects of
Samantha Molina-Gutiérrez et al.
Molecules (Basel, Switzerland), 25(15) (2020-08-06)
Biobased monomers have been used to replace their petroleum counterparts in the synthesis of polymers that are aimed at different applications. However, environmentally friendly polymerization processes are also essential to guarantee greener materials. Thus, photoinduced polymerization, which is low-energy consuming
Damien Loterie et al.
Nature communications, 11(1), 852-852 (2020-02-14)
In tomographic volumetric additive manufacturing, an entire three-dimensional object is simultaneously solidified by irradiating a liquid photopolymer volume from multiple angles with dynamic light patterns. Though tomographic additive manufacturing has the potential to produce complex parts with a higher throughput
Mechanical properties of nanocomposite biomaterials improved by extrusion during direct ink writing.
Dibakar Mondal et al.
Journal of the mechanical behavior of biomedical materials, 104, 103653-103653 (2020-03-17)
In this study, single filaments of acrylated epoxidized soybean oil (AESO)/polyethylene glycol diacrylate (PEGDA)/nanohydroxyapatite (nHA)-based nanocomposites intended for bone defect repair have displayed significant improvement of their mechanical properties when extruded through smaller needle gauges before UV curing. These nanocomposite
Frederik Kotz et al.
Nature communications, 10(1), 1439-1439 (2019-03-31)
Fused silica glass is the preferred material for applications which require long-term chemical and mechanical stability as well as excellent optical properties. The manufacturing of complex hollow microstructures within transparent fused silica glass is of particular interest for, among others
Johannes Stögerer et al.
Materials (Basel, Switzerland), 13(21) (2020-10-28)
Natural materials achieve exceptional mechanical properties by relying on hierarchically structuring their internal architecture. In several marine species, layers of stiff and hard inorganic material are separated by thin compliant organic layers, giving their skeleton both stiffness and toughness. This
Mohammad Kabir et al.
Journal of biomedical optics, 25(1), 1-8 (2019-11-16)
Multiphoton microscopy provides a suitable technique for imaging biological tissues with submicrometer resolution. Usually a Gaussian beam (GB) is used for illumination, leading to a reduced power efficiency in the multiphoton response and vignetting for a square-shaped imaging area. A
Hendryk Steldinger et al.
Advanced science (Weinheim, Baden-Wurttemberg, Germany), 6(19), 1901340-1901340 (2019-10-09)
A method for obtaining hierarchically structured porous carbons, employing 3D printing to control the structure down to the lower µm scale, is presented. To successfully 3D print a polymer precursor and transfer it to a highly stable and structurally conformal
Megan Kimicata et al.
Acta biomaterialia, 110, 68-81 (2020-04-20)
Autologous grafts are the current gold standard of care for coronary artery bypass graft surgeries, but are limited by availability and plagued by high failure rates. Similarly, tissue engineering approaches to small diameter vascular grafts using naturally derived and synthetic
Yujia Huang et al.
Journal of biomedical optics, 25(2), 1-12 (2020-02-28)
Ultrasound-assisted optical imaging techniques, such as ultrasound-modulated optical tomography, allow for imaging deep inside scattering media. In these modalities, a fraction of the photons passing through the ultrasound beam is modulated. The efficiency by which the photons are converted is
Kolczak, U. et al.
Journal of the American Chemical Society, 118, 6477-6477 (1996)
Alexandru Tudor et al.
Sensors (Basel, Switzerland), 16(2), 219-219 (2016-02-11)
Herein we describe poly(ionic liquid) hydrogel actuators that are capable of responding to multiple stimuli, namely temperature, ionic strength and white light irradiation. Using two starting materials, a crosslinked poly ionic liquid (PIL) and a linear poly(N-isopropylacrylamide-co-spiropyran-co-acrylic acid), several semi-interpenetrating
Zeang Zhao et al.
ACS applied materials & interfaces, 10(23), 19932-19939 (2018-05-09)
Swelling-induced shape transformation has been widely investigated and applied to the design and fabrication of smart polymer devices, such as soft robotics, biomedical devices, and origami patterns. Previous shape-shifting designs using soft hydrogels have several limitations, including relatively small actuation
J Elsing et al.
Physical chemistry chemical physics : PCCP, 19(7), 5477-5485 (2017-02-07)
Foamed styrene-in-water emulsions can serve as templates for solid polystyrene foams as the pore size d
Yuan Sun et al.
Journal of biomedical materials research. Part A, 109(2), 193-206 (2020-05-23)
Conduits that promote nerve regeneration are currently of great medical concern, particularly when gaps exist between nerve endings. To address this issue, our laboratory previously developed a nerve conduit from biodegradable poly(caprolactone fumarate) (PCLF) that supports peripheral nerve regeneration. The
Edvinas Skliutas et al.
Scientific reports, 10(1), 9758-9758 (2020-06-18)
Materials obtained from renewable sources are emerging to replace the starting materials of petroleum-derived plastics. They offer easy processing, fulfill technological, functional and durability requirements at the same time ensuring increased bio-compatibility, recycling, and eventually lower cost. On the other
Hamad A Albehaijan et al.
ACS applied materials & interfaces, 12(6), 7518-7528 (2020-01-30)
The role of side-chain branching in flexoelectric properties of a flexible, ionic solid polymer electrolyte membrane (PEM) has been investigated subjected to mechanical bending. These PEMs were synthesized via photopolymerization of the bifunctional poly(ethylene glycol) diacrylate (PEGDA) network attached with
Federico Lancia et al.
Nature communications, 10(1), 4819-4819 (2019-10-28)
The motion of artificial molecular machines has been amplified into the shape transformation of polymer materials that have been compared to muscles, where mechanically active molecules work together to produce a contraction. In spite of this progress, harnessing cooperative molecular
Emily C Davidson et al.
Advanced materials (Deerfield Beach, Fla.), 32(1), e1905682-e1905682 (2019-10-31)
3D printable and reconfigurable liquid crystal elastomers (LCEs) that reversibly shape-morph when cycled above and below their nematic-to-isotropic transition temperature (TNI ) are created, whose actuated shape can be locked-in via high-temperature UV exposure. By synthesizing LCE-based inks with light-triggerable
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