Quasicrystals: Relaxing defects
نویسندگان
چکیده
منابع مشابه
Defects in Static Elasticity of Quasicrystals
A review on mathematical elasticity of quasicrystals is given. In this review, the focus is on various defects of quasicrystals. Dislocation and crack are two classes of typical topological defects, while their existence has great influence on the mechanical behavior of quasicrystals. The analytic and numerical solutions of dislocations and crack in quasicrystals are the core of the static and ...
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Quasicrystals present a long range order but, contrary to crystals, they don’t have any periodic order. Hence, they appear as intermediate materials between simple crystals and glasses. It is known that the low temperature (T<1K) properties of amorphous materials differ from those of simple crystals[1]. In the phenomenological tunneling states (TS’s) model, these specific properties are explain...
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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. It led to a new understanding of how atoms can arrange themselves, the role of periodicity in nature, and has created a new branch of crystallography.
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Design of some crystal and quasicrystal networks, based on rhombellane tiling,is presented. [1,1,1]Propellane,is a synthesized organic molecule; its hydrogenated form, the bicyclo[1.1.1]pentane,may be represented by the complete bipartite graph K2,3 which is the smallest rhombellane. Topology of translational and radial structures involving rhombellanes is described in terms of vertex symbol, c...
متن کاملnumerical study of the vibrational properties of quasicrystals and the effects of the defects and impurities
quasicrystals are a group of materials with the quasi-periodic structure, and since their discovery in 1980 their specially interesting physical properties have attracted the attention of many researchers. the lack of translational periodicity makes the numerical calculations of their physical properties much more difficult than the crystalline solids. in this work we present a detailed numeric...
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ژورنال
عنوان ژورنال: Nature Physics
سال: 2015
ISSN: 1745-2473,1745-2481
DOI: 10.1038/nphys3474