Results 1 to 10 of about 23,610 (270)

Creating Tunable Micro-Optical Components via Photopolymerization 3D Printing Combined with Polymer-Dispersed Liquid Crystals

Micromachines
Based on additive manufacturing via photopolymerization, this study combines polymer-dispersed liquid crystal (PDLC) technology with 3D printing technology to produce tunable micro-optical components with switchable diffraction or focusing ...
Sheng-Yuan Zhang, Hsi-Fu Shih, Chuen-Lin Tien, Han-Yen Tu   +3 more
doaj   +1 more source

Materials Testing for the Development of Biocompatible Devices through Vat-Polymerization 3D Printing

Nanomaterials, 2020
Light-based 3D printing techniques could be a valuable instrument in the development of customized and affordable biomedical devices, basically for high precision and high flexibility in terms of materials of these technologies.
Gustavo González, Désirée Baruffaldi, Cinzia Martinengo, Angelo Angelini, Annalisa Chiappone, Ignazio Roppolo, Candido Fabrizio Pirri, Francesca Frascella   +7 more
doaj   +1 more source

The Applicability of 2-amino-4,6-diphenyl-pyridine-3-carbonitrile Sensors for Monitoring Different Types of Photopolymerization Processes and Acceleration of Cationic and Free-Radical Photopolymerization Under Near UV Light

Sensors, 2019
The performance of a series of 2-amino-4,6-diphenyl-pyridine-3-carbonitrile derivatives as fluorescent molecular sensors for monitoring photopolymerization processes of different monomers by the Fluorescence Probe Technique (FPT) was studied. It has been
Joanna Ortyl, Paweł Fiedor, Anna Chachaj-Brekiesz, Maciej Pilch, Emilia Hola, Mariusz Galek   +5 more
doaj   +1 more source

Single-Cell Screening through Cell Encapsulation in Photopolymerized Gelatin Methacryloyl

Micro
This study evaluated the potential of gelatin methacryloyl (GelMA) for single-cell screening compared to polyethylene glycol diacrylate (PEGDA). GelMA photopolymerized at 1000–2000 mJ/cm2 produced consistent patterns and supported HeLa cell viability ...
Venkatesh Kumar Panneer Selvam, Takeru Fukunaga, Yuya Suzuki, Shunya Okamoto, Takayuki Shibata, Tuhin Subhra Santra, Moeto Nagai   +6 more
doaj   +1 more source

Mechanoactivated Amorphization and Photopolymerization of Styryldipyryliums

Communications Materials
Abstract We report the mechanoactivation of photostable styryldipyrylium-based monomers, which results in their amorphization-enabled solid-state photopolymerization and produces soluble and processable amorphous polymers. A combination of solid-state NMR, X-ray diffraction, and absorption/fluorescence spectroscopy reveals the crucial role of a
Junichi Usuba, Zhenhuan Sun, Han P. Q. Nguyen, Cijil Raju, Klaus Schmidt-Rohr, Grace G. D. Han   +5 more
openaire   +3 more sources

Digital Light Processing (DLP) 3D Printing of Atomoxetine Hydrochloride Tablets Using Photoreactive Suspensions

Pharmaceutics, 2020
Three-dimensional (3D) printing technologies are based on successive material printing layer-by-layer and are considered suitable for the production of dosage forms customized for a patient’s needs.
Mirjana Krkobabić, Djordje Medarević, Nikola Pešić, Dragana Vasiljević, Branka Ivković, Svetlana Ibrić   +5 more
doaj   +1 more source

Ag nanoparticle-enhanced alkyl radical generation in photopolymerization for holographic recording

Nanophotonics, 2019
We report a new Ag nanoparticle-dispersed polymer nanocomposite for volume holographic recording through acrylic photopolymerization. The initial grating buildup dynamics at the inhibition stage are measured at various Ag nanoparticle concentrations. The
Guo Jinxin, Jian Jialing, Wang Meng, Tomita Yasuo, Cao Lin, Wang Dayong, Zhang Xinping   +6 more
doaj   +1 more source

Construção de câmara de luz ultravioleta para fotopolimerização de fases estacionárias monolíticas Coinstruction of ultraviolet-light chamber for monolithic stationary phases photo-polymerization

Química Nova, 2008
The assembly of a photochemical reactor with six fluorescent lamps, used for photopolymerizations is described. This chamber presents a mobile support, allowing the placement of samples at different heights and a safety lock that interrupts the radiation,
Fernando Antonio Simas Vaz, Marcone Augusto Leal de Oliveira, Marco Polo Garcia de Queiroz, Sidney José Lima Ribeiro   +3 more
doaj   +1 more source

Photopolymerization and photodegradation of polymers after long-term UV light exposure

Фізика і хімія твердого тіла
Over the past two decades, research into photostimulated processes in polymeric materials has gained new momentum, driven both by the growing demand for functional polymers with controllable properties and the need to understand their long-term stability
Taras Kavetskyy, Oksana Zubrytska, Oles Matskiv, Martin Stievenard, Ondrej Šauša, Helena Švajdlenková, Volodymyr Soloviev, Andrii Bielinskyi, Jolita Ostrauskaite, Arnold Kiv   +9 more
doaj   +1 more source

Preparation and Characterization of UV-Curable Cyclohexanone-Formaldehyde Resin and Its Cured Film Properties

International Journal of Polymer Science, 2014
UV-curable cyclohexanone-formaldehyde (UVCF) resin was prepared with cyclohexanone-formaldehyde (CF) resin, isophorone diisocyanate (IPDI), and pentaerythritol triacrylate (PETA) as base substance, bridging agent, and functional monomer, respectively ...
Guang Yang, Hongqiang Li, Xuejun Lai, Yi Wang, Yifu Zhang, Xingrong Zeng   +5 more
doaj   +1 more source