Results 31 to 40 of about 4,958 (198)

Unravelling friction anisotropy by atomic force microscopy. [PDF]

open access: yesJ 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

Crack propagation in quasicrystals [PDF]

open access: yes, 2022
S.500-516Numerical simulations have been performed on the propagation of mode-I cracks in both ordered and randomized two-dimensional decagonal model quasicrystals.
Trebin, H.-R.   +2 more
core  

Growth Modes of Quasicrystals [PDF]

open access: yesPhysical Review Letters, 2014
The growth of quasicrystals, i.e., aperiodic structures with long-range order, seeded from the melt is investigated using a dynamical phase field crystal model. Depending on the thermodynamic conditions, two different growth modes are detected, namely defect-free growth of the stable quasicrystal and a mode dominated by phasonic flips which are ...
Achim, C. V.   +2 more
openaire   +3 more sources

Quasicrystals and the Wulff-Shape [PDF]

open access: yesDiscrete & Computational Geometry, 1999
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Károly J. Böröczky, Uwe Schnell
openaire   +1 more source

A Stress Analysis of Some Fundamental Specimens of Soft-Matter Quasicrystals with Eightfold Symmetry Based on Generalized Dynamics

open access: yesAdvances in Materials Science and Engineering, 2019
This paper reports a stress analysis of some fundamental samples made of soft-matter quasicrystals with 8-fold symmetry based on the generalized dynamics.
Fang Wang   +3 more
doaj   +1 more source

Quasicrystals in a monodisperse system [PDF]

open access: yesPhysical Review E, 1999
We investigate the formation of a two-dimensional quasicrystal in a monodisperse system, using molecular dynamics simulations of hard sphere particles interacting via a two-dimensional square-well potential. We find that more than one stable crystalline phase can form for certain values of the square-well parameters.
Skibinsky A   +4 more
openaire   +3 more sources

Three-Dimensional and Two-Dimensional Green Tensors of Piezoelectric Quasicrystals

open access: yesCrystals
In this work, within the framework of the linear piezoelectricity theory of quasicrystals, the three-dimensional and two-dimensional Green tensors for arbitrary piezoelectric quasicrystals are derived.
Markus Lazar, Eleni Agiasofitou
doaj   +1 more source

Data-Driven Design and Fabrication of Heat-Resistant, Ultrastrong, Lightweight Aluminum-Based Entropy Alloy by Additive Manufacturing. [PDF]

open access: yesAdv Sci (Weinh)
A data‐driven strategy integrating quantum machine learning (QML) and high‐throughput computing overcomes hot‐cracking limitation to design a novel lightweight aluminum‐based entropy alloy for additive manufacturing. The fabrication transforms brittle intermetallics into deformable hierarchical nanostructures, yielding ultrastrong strength (>1 GPa) and
Wang E   +6 more
europepmc   +2 more sources

Robust Anderson transition in non-Hermitian photonic quasicrystals [PDF]

open access: yes
Anderson localization, i.e. the suppression of diffusion in lattices with random or incommensurate disorder, is a fragile interference phenomenon which is spoiled out in the presence of dephasing effects or fluctuating disorder.
Longhi, Stefano
core   +4 more sources

Defects in Quasicrystals

open access: yes, 1989
There are several incentives to identify the analogues of dislocations and disclinations in quasicrystals. Penrose patterns are two-dimensional systems, and according to phase space counting fluctuations of the atomic displacements are so strong that exact long-range order is reduced to quasi-longrange order just as in periodic crystals.
Bohsung, Jörg, Trebin, Hans-Rainer
openaire   +3 more sources

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