Results 81 to 90 of about 41,365 (304)

Mechanical properties of amorphous and semi-crystalline semi-aromatic polyamides

Heliyon, 2020
We investigate the mechanical properties of amorphous and semi-crystalline semi-aromatic polyamides, polyphthalamides (PPA). Three relaxation processes have been identified by DMTA which is consistent with literature for polyamide.
Stéphanie Djukic, Anthony Bocahut, Jérôme Bikard, Didier R. Long   +3 more
doaj   +1 more source

A simplified ductile-brittle transition temperature tester [PDF]

The construction and operation of a versatile, simplified bend tester is described. The tester is usable at temperatures from - 192 to 650 C in air. Features of the tester include a single test chamber for cryogenic or elevated temperatures, specimen ...
Arias, A.
core   +1 more source

Epidermal Patch Technologies for Integrated Healthcare and Infection Management

Advanced Healthcare Materials, EarlyView.
Epidermal patches have evolved from simple wound coverings into multifunctional, skin‐conformable platforms integrating drug delivery, biosensing, and therapeutic functionalities. This review highlights their material innovations, fabrication strategies, and intelligent designs, including hydrogels, microneedles, and flexible electronics, while ...
Yuqi Wang, Atakan Tevlek, Pawel L. Urban, Boaz Mizrahi, Onome Ejeromedoghene, Roshan Deen, Yuanjing Lin, Jagan Mohan Dodda   +7 more
wiley   +1 more source

Mechanism study of brittle-to-ductile transition temperature in W-0.2 wt% Al2O3 alloy

Journal of Materials Research and Technology
W-0.2 wt% Al2O3 alloy plates were fabricated using composite powders prepared by the wet chemical method, followed by cold isostatic pressing, vacuum sintering, and hot-rolling.
Ziwen Zhao, Tielong Sun, Changji Wang, Hua Yu, Liya Cui, Caihong Dou, Yunchao Zhao, Cheng Zhang, Di Dong, Kunming Pan   +9 more
doaj   +1 more source

Tough, Ductile, and Strong Hard‐Soft Cementitious Composite Enabled by Multi‐Material Additive Manufacturing

Advanced Materials, EarlyView.
Drawing inspiration from the layered hard‐soft architecture found in sea sponges, this work establishes a new framework for architected cementitious composites (ACC) through multi‐material additive manufacturing (MMAM) process. The integration of mortar and elastomer phases into layered architectures enables synergistic toughening mechanisms, including
Aimane Najmeddine, Shashank Gupta, William Makinen, Zayvinn Lin, Krystal Delnoce, Reza Moini   +5 more
wiley   +1 more source

Triply‐Twinned Metamaterials: Unraveling the Mechanics and Failure Pathways Through High‐Resolution XCT

Advanced Materials, EarlyView.
Triply‐twinned architected lattices transform deformation from bending to stretching of struts, delivering up to threefold increases in stiffness and strength across polymeric and metallic systems. High‐resolution synchrotron XCT and image‐based simulations reveal how meta‐grain architecture, defects, and AM build orientation govern failure pathways ...
David McArthur, George Maddison, Jaianth Vijayakumar, Paul Tafforeau, Kathy Christofidou, Peter David Lee, PJ Tan, Chu Lun Alex Leung   +7 more
wiley   +1 more source

Finite temperature molecular dynamics study of unstable stacking fault free energies in silicon

, 1998
We calculate the free energies of unstable stacking fault (USF) configurations on the glide and shuffle slip planes in silicon as a function of temperature, using the recently developed Environment Dependent Interatomic Potential (EDIP).
A. Antonelli, E. Kaxiras, Efthimios Kaxiras, F. H. Stillinger, G. H. Vineyard, J. F. Justo, J. F. Justo, J. P. Hirth, J. R. Rice, J. R. Rice, J. Samuels, J. Tersoff, M. de Koning, M. de Koning, M. de Koning, M. Watanabe, M. Z. Bazant, Martin Z. Bazant, P. B. Hirsch, Y-M Juan, Y. Sun   +20 more
core   +1 more source

Beyond Earth: Resilience of Quasi‐2D Perovskite Solar Cells in Space

Advanced Materials, EarlyView.
In the article (DOI: 10.1002/adma.202520433), Christoph Putz and co‐workers demonstrate rigid quasi‐2D perovskite solar cells operating in low Earth orbit, delivering stable power for more than 100 days under real‐space conditions. In‐orbit performance is correlated with extensive ground‐based thermal and proton‐irradiation studies on rigid and ...
Christoph Putz, Lukas E. Lehner, Stepan Demchyshyn, Bekele Hailegnaw, Phillip Jahelka, Magdalena Breitwieser, Sercan Özen, Andrea Denker, Jürgen Bundesmann, Alina Hanna Dittwald, Dilara Karabulut, Philipp Tockhorn, Steve Albrecht, Felix Lang, Markus C. Scharber, Michael D. Kelzenberg, Harry A. Atwater, Martin Kaltenbrunner   +17 more
wiley   +1 more source

The Effect of Cooling Rate on the Ductile- Brittle Bend-transition Temperature of Chromium Wire [PDF]

Effect of cooling rate on ductile-brittle bend-transition temperature of chromium ...
Gilbert, A., Klein, M. J.
core   +1 more source

Recent Advances in Electrospun Nanofibers for Triboelectric Nanogenerators: Performance Enhancement Strategies and Emerging Applications

Advanced Materials, EarlyView.
This review highlights recent advances in electrospun nanofiber‐based triboelectric nanogenerators, emphasizing how material design, fiber architecture, and interface engineering collectively enhance output performance and mechanical durability. Key developments in porous, aligned, core‐shell, and hierarchical nanofibers are discussed alongside ...
MD Fajla Rabbi, Jee Hwan Ahn, Duy Linh Vu, Kyoung Kwan Ahn   +3 more
wiley   +1 more source