Results 91 to 100 of about 4,957 (195)

Homogeneous holographic viscoelastic models and quasicrystals

open access: yesPhysical Review Research, 2020
We show that the field theories dual to the homogeneous holographic models with spontaneously broken translations display several distinctive properties of quasicrystals, aperiodic crystals with long-range order (e.g., incommensurate charge density waves)
Matteo Baggioli
doaj   +1 more source

Quasi-Projection: aperiodic concrete formwork for perceived surface complexity

open access: yes, 2008
By disclosing long range order from few dissimilar tiles, aperiodic tilings can potentially diversify and spatially enrich the repetitive aspects of modular systems still pertinent in the production of architecture today. Such effective tilings have been
Ottevaere, O.
core  

Dislocations in icosahedral quasicrystals [PDF]

open access: yesChemical Society Reviews, 2012
Dislocations in quasicrystals, as a direct result of the lack of translational symmetry in these materials, possess various salient features. The Burgers vector of a dislocation in an icosahedral quasicrystal is a 6-dimensional vector, which reflects the fact that the dislocation, besides the phonon-type strain field analogous to dislocations in ...
openaire   +3 more sources

Generic mobility edges in a class of non-Hermitian quasicrystals

open access: yesResults in Physics
We present approximate solutions for the mobility edge (ME) in a specific class of one-dimensional non-Hermitian (NH) quasicrystals delineating between localized and extended states.
Xiang-Ping Jiang, Mingdi Xu, Lei Pan
doaj   +1 more source

Towards aperiodic tesellation: a self-organising particle spring system approach

open access: yes, 2008
The derivation of novel programming methods for the generation of aperiodic tiling patterns, predominantly in 2d space, has attracted considerable attention from both researchers and practicing architects.
Leon, M.
core  

Phononic Quasicrystals

open access: yes, 2003
Phononic crystals are to sound what photonic crystals are to light and crystals are to electrons. If the wavelength is of the same order of magnitude as the typical distances between the objects in their ordered arrangement, then the interaction is ...
Walter Steurer   +2 more
core   +1 more source

Decagonal quasicrystals

open access: yes, 1989
Following the discovery of two dimensional quasicrystals in rapidly solidified Al-Mn alloys by us and L. Bendersky in 1985, a number of fascinating studies has been conducted to unravel the atomic configuration of quasicrystals with decagonal symmetry. A
Ranganathan, S, Chattopadhyay, K
core  

Dynamics of quasicrystals

open access: yes, 2014
International audienceThe (lattice) dynamics of quasicrystals differs in many aspects from that of lattice periodic systems. This they have in common with other aperiodic crystals.
Janssen, T., Boissieu M., De
core   +1 more source

Image Sampling with Quasicrystals

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2009
We investigate the use of quasicrystals in image sampling. Quasicrystals produce space-filling, non-periodic point sets that are uniformly discrete and relatively dense, thereby ensuring the sample sites are evenly spread out throughout the sampled image.
Mark Grundland   +3 more
doaj   +1 more source

Isotropic and anisotropic physical properties of quasicrystals

open access: yes, 2006
Since quasicrystals have positional and orientational long-range order, they are essentially anisotropic. However, the researches show that some physical properties of quasicrystals are isotropic.
X. Wang   +4 more
core   +1 more source

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