Results 11 to 20 of about 283 (132)

Unravelling friction anisotropy by atomic force microscopy. [PDF]

J Microsc
Abstract Friction plays a crucial role in both natural phenomena, from the flow of blood cells to earthquakes, and technological applications, from car engines to wind turbines. One of the most fundamental aspects of tribology is friction anisotropy, that is, the dependence of the friction force vector on the direction of sliding.
Cafolla C, Campione M.
europepmc   +2 more sources

Superior Performance and Catalytic Mechanism of an Icosahedral Quasicrystal Al-Cu-Fe in CO₂ Reduction to CO. [PDF]

ChemSusChem
Icosahedral quasicrystal Al63Cu25Fe12 (iQC) is employed as a high‐performance catalyst for CO2‐to‐CO conversion. The iQC exhibits superior CO2 conversion compared with its crystalline counterparts. Density functional theory calculations reveal that abundant icosahedral clusters within iQC effectively lower the reaction barrier, elucidating the origin ...
Jin H, Zhang W, Yoshikawa H, Ishikawa A, Labib F, Zhang B, Zhou J, Kang R, Qin J, Zhang J, Xu Y, Tamura R.   +11 more
europepmc   +2 more sources

Enhanced Deformability Through Distributed Buckling in Stiff Quasicrystalline Architected Materials. [PDF]

Adv Mater
Quasi‐periodic metamaterials combine stiffness and large‐strain deformability, overcoming limitations of traditional stretching‐dominated periodic designs that are prone to global buckling instabilities and catastrophic layer collapses. By leveraging non‐uniform force chains, they achieve high isotropic stiffness, stable deformation, and remarkable ...
Rosa MIN, Karapiperis K, Radi K, Pescialli E, Kochmann DM.   +4 more
europepmc   +2 more sources

Phase transitions within crystals that are aperiodic by construction

, 2022
International audienceAperiodic crystals possess long-range order without translational symmetry. They constitute a state of matter that has forced a profound paradigm shift in solid-state physics.
Frantsuzov, Ilya, Mariette, Céline, Wang, Bo, Nichols, Shane, Bourges, Philippe, Bosak, Alexei, Chen, Yu-Sheng, Guérin, Laurent, Ecolivet, Claude, Rabiller, Philippe, Toudic, Bertrand, Hollingsworth, Mark   +11 more
core   +1 more source

High-pressure crystallography of periodic and aperiodic crystals [PDF]

, 2015
More than five decades have passed since the first single-crystal X-ray diffraction experiments at high pressure were performed. These studies were applied historically to geochemical processes occurring in the Earth and other planets, but high-pressure ...
Vasily S. Minkov, Clivia Hejny
core   +1 more source

On the Notions of Symmetry and Aperiodicity for Delone Sets

, 2012
Baake M, Grimm U. On the Notions of Symmetry and Aperiodicity for Delone Sets. Symmetry. 2012;4(4):566-580.Non-periodic systems have become more important in recent years, both theoretically and practically. Their description via Delone sets requires the
Uwe Grimm, Grimm, Uwe, Baake, Michael, Michael Baake   +3 more
core   +1 more source

Multiple-scale structures: from Faraday waves to soft-matter quasicrystals [PDF]

, 2018
For many years, quasicrystals were observed only as solid-state metallic alloys, yet current research is now actively exploring their formation in a variety of soft materials, including systems of macromolecules, nanoparticles and colloids.
Mehrtash Babadi, Savitz, Samuel, Babadi, Mehrtash, Samuel Savitz, Ron Lifshitz, Lifshitz, Ron   +5 more
core   +1 more source

Quasicrystals

, 2001
The discretely diffracting aperiodic crystals termed quasicrystals, discovered at NBS in the early 1980s, have led to much interdisciplinary activity involving mainly materials science, physics, mathematics, and crystallography.
Cahn, J.W.
core   +1 more source

High spatial resolution studies of phase transitions within organic aperiodic crystals

, 2020
International audienceThe understanding of the symmetry breakings within crystals that are aperiodic by construction is actually very limited. Quasicrystals and incommensurate composite crystals may potentially allow such studies.
Mariette, Céline, Odin, Christophe, Verezhak, Mariana, Bourges, Philippe, Bosak, Alexei, Guérin, Laurent, Ecolivet, Claude, Rabiller, Philippe, Toudic, Bertrand   +8 more
core   +1 more source

Time‐Domain Near‐Field Scanning Microscopy of Terahertz Metasurfaces

Advanced Photonics Research, Volume 7, Issue 1, January 2026.
Time‐domain near‐field scanning terahertz microscopy provides direct access to subwavelength electromagnetic fields on metasurfaces. By combining controlled polarization excitation with nanoscale probing, this technique enables quantitative visualization of localized hotspots, surface‐wave propagation, and wavefront manipulation, offering a powerful ...
Ruxue Wei, Soren Petersen, Weili Zhang
wiley   +1 more source