Results 31 to 40 of about 4,957 (195)

Crack propagation in perfectly ordered and random tiling quasicrystals

open access: yes, 2022
S.453-456Numerical experiments have been performed on the propagation of modeI cracks in both ordered and randomized two-dimensional decagonal mode quasicrystals.
Trebin, H.-R.   +2 more
core   +1 more source

Structural Disorder in Quasicrystals [PDF]

open access: yesArchives of Metallurgy and Materials, 2020
One of the challenges of modern crystallography of complex systems (complex metallic alloys, proteins, aperiodic crystals and quasicrystals) is to properly describe the disorder in these systems and discuss correctly the refinement results in terms of ...
R. Strzałka   +3 more
doaj   +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

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

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

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   +2 more sources

Large spatial Goos-Hänchen shifts from quasicrystals with graphene

open access: yesResults in Physics, 2020
We investigate the spatial Goos-Hänchen (GH) shift of reflected beam from quasicrystals composed of Fibonacci dielectrics and graphene. The quasicrystals are composed of two symmetrical Fibonacci dielectrics and graphene is embedded in the center of the ...
Bin Xu   +6 more
doaj   +1 more source

Precipitation of multi-type nano-quasicrystals in a Mg-Zn-Y alloy

open access: yesJournal of Magnesium and Alloys
Mg-6Zn-1Y (at.%) ribbons with strengthening precipitates of multi-type nanoquasicrystals were prepared by melt-spinning followed by aging treatments. Microstructural evolution of the rapidly solidified ribbons during isothermal aging was comprehensively ...
W.Z. Wang   +4 more
doaj   +1 more source

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

Large-scale database analysis of anomalous thermal conductivity of quasicrystals and its application to thermal diodes

open access: yesScience and Technology of Advanced Materials: Methods
One long-standing and crucial issue in the study of quasicrystals has been to identify the physical properties characteristic of quasicrystals. The large positive temperature coefficient of thermal conductivity at temperatures above room temperature ...
Takashi Kurono   +3 more
doaj   +1 more source

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