Results 81 to 90 of about 31,861 (162)

Laser Powder Bed Fusion of Copper–Tungsten Composites for Heat Sink Applications in High‐Power Electronics

Advanced Engineering Materials, Volume 28, Issue 8, 22 April 2026.
This article demonstrates the successful qualification of a copper–tungsten composite for laser powder bed fusion. The resulting components exhibited high density, high thermal conductivity, and reduced thermal expansion. Heat sinks with complex geometries were successfully manufactured, clearly showcasing the material's potential for additive ...
Simon Rauh, Shashank Deepak Prabhu, Jannik Huber, Lioba Fischer, Gerhard Wolf, Nico Hempel, Peter Mayr   +6 more
wiley   +1 more source

Challenges in Simultaneous Microstructuring and Hyperdoping of Germanium with Ultrafast Laser

physica status solidi (a), Volume 223, Issue 8, 22 April 2026.
Femtosecond laser processing is explored as a single‐step route to microstructure and hyperdope germanium for extended infrared absorption. Comparative experiments with and without a Ti precursor reveal that Ge's shallow green light absorption and low thermal conductivity drive intense localized melting, evaporation, and redeposition. Post‐cleaning and
Dmytro Gnatyuk, Sara Hamed, Masoud Ebrahimzadeh, Hanchen Liu, Ville Vähänissi, Pekka Laukkanen, Hele Savin, Xiaolong Liu   +7 more
wiley   +1 more source

From Hemp Bast to Lyocell Fiber: Sustainable Process Optimization for Lyocell‐Grade Dissolving Pulp

Journal of Applied Polymer Science, Volume 143, Issue 16, April 20, 2026.
This study presents a sustainable method to produce lyocell‐grade dissolving pulp from Canadian hemp bast fibers. A simplified alkali‐chelation‐bleaching process, free from sulfur and chlorine, yielded high α‐cellulose pulp with low lignin and hemicellulose content. The pulp was successfully spun into continuous hemp‐based lyocell fibers, demonstrating
Md Abu Sayed, Lelia Lawson, Bernardo Araujo Souto, K. M. Abdun Noor, Dagem Z. Haddis, Frehiwot T. Hailu, Jane Batcheller, David C. Bressler, Patricia I. Dolez   +8 more
wiley   +1 more source

Tailored Dual Responsive Hybrid Gelatin Methacryloyl/Poly[2‐(Dimethylamino)Ethyl Methacrylate] Hydrogels for Efficient Ibuprofen Release in Topical Applications

Journal of Applied Polymer Science, Volume 143, Issue 15, April 15, 2026.
GelMA/DMAEMA hybrid hydrogels for release of ibuprofen. ABSTRACT In this study, biocompatible hydrogels intended for topical delivery of ibuprofen were synthesized from gelatin methacryloyl (GelMA) and 2‐(dimethylamino)ethyl methacrylate (DMAEMA) by varying their proportions. The impact of different GelMA and DMAEMA ratios was comprehensively evaluated
Guilherme Frey Schutz, Ana Luiza Assis Coutinho, Carolina Coli Zuliani, Ibsen Bellini Coimbra, Jéssica Heline Lopes da Fonseca, Marcos Akira d'Ávila, Ângela Maria Moraes, Roniérik Pioli Vieira   +7 more
wiley   +1 more source

Vegetable Oil–Mediated Transesterification as a Green Route to Tune Ethyl Cellulose Properties

Journal of Polymer Science, Volume 64, Issue 8, Page 1681-1691, 15 April 2026.
An environmentally conscious strategy for augmenting the hydrophobicity of ethyl cellulose polymer via a transesterification reaction using renewable vegetable oil. ABSTRACT The inherent hydrophilicity of biopolymers presents significant limitations to their implementation, particularly in coating and packaging applications.
Athira Narayanan, Valeria D'Errico, Marco Friuli, Sonia Bagheri, Claudio Mele, Alessandro Sannino, Christian Demitri, Leonardo Lamanna   +7 more
wiley   +1 more source

Thermal atmospheric models [PDF]

The static thermal atmosphere is described and its predictions are compared to observations both to test the validity of the classic assumptions and to distinguish and describe those spectral features with diagnostic ...
Johnson, Hollis Ralph
core   +1 more source

Development and Characterization of Cellulose Films Incorporating Vitamin A and E‐Loaded Liposomes

Journal of Applied Polymer Science, Volume 143, Issue 14, April 10, 2026.
Liposome‐cellulose films deliver UV‐light shielding, wetting, and high rigidity for green tattoo aftercare. ABSTRACT This study introduces cellulose films enriched with vitamin A/E liposomes as sustainable, bioactive dressings for tattoo aftercare. Morphological analysis showed a smoother, more continuous microtexture than the neat cellulose films ...
Nathalia Vieira Villar de Nunes, Lincoln Audrew Cordeiro, Camila Monteiro Cholant, Ana Carolina Rodrigues Ribeiro, João Pedro Almeida Lopes, Everton Granemann Souza, Chiara das Dores do Nascimento, Alexandre Ferreira Galio, Amanda Dantas de Oliveira, Andre Ricardo Fajardo, André Luiz Missio   +10 more
wiley   +1 more source

Infrared observations of comets [PDF]

Selected comets are observed in the near infrared (1 to 2.2 micron) and thermal infrared (3.5 to 20 micron) with the NASA Infrared Telescope Facility (IRTF) and other telescopes as appropriate, in order to characterize the physical properties of the dust
Hanner, Martha S.
core   +1 more source

NASA-Texas Planetary Program [PDF]

Astronomical observations performed at the McDonald Observatory were summarized. Various spectra obtained from Jupiter, Uranus, Saturn, Neptune, Pluto, Titan, Iapetus, and sundry asteroids were described briefly.
Smith, H. J.
core   +1 more source

Investigation of optical, structural, and radiation shielding properties of novel polyvinyl alcohol and cesium dichromate Cs₂Cr₂O₇ nanocomposite films. [PDF]

Sci Rep
Soliman TS, Zakaly HMH.
europepmc   +1 more source