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An atomic scale study of two-dimensional quasicrystal nucleation controlled by multiple length scale interactions
- Source :
- Soft Matter. 16:5718-5726
- Publication Year :
- 2020
- Publisher :
- Royal Society of Chemistry (RSC), 2020.
-
Abstract
- Formation of quasicrystal structures has always been mysterious since the discovery of these magic structures. In this work, the nucleation of decagonal, dodecagonal, heptagonal, and octagonal quasicrystal structures controlled by the coupling among multiple length scales is investigated using a dynamic phase-field crystal model. We observe that the nucleation of quasicrystals proceeds through local rearrangement of length scales, i.e., the generation, merging and stacking of 3-atom building blocks constructed by the length scales, and accordingly, propose a geometric model to describe the cooperation of length scales during structural transformation in quasicrystal nucleation. Essentially, such cooperation is crucial to quasicrystal formation, and controlled by the match and balance between length scales. These findings clarify the scenario and microscopic mechanism of the structural evolution during quasicrystal nucleation, and help us to understand the common rule for the formation of periodic crystal and quasicrystal structures with various symmetries.
- Subjects :
- Length scale
Materials science
Condensed matter physics
Nucleation
Stacking
Physics::Optics
Quasicrystal
02 engineering and technology
General Chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Atomic units
Crystal
Condensed Matter::Materials Science
Crystal model
0103 physical sciences
Mathematics::Metric Geometry
010306 general physics
0210 nano-technology
Geometric modeling
Subjects
Details
- ISSN :
- 17446848 and 1744683X
- Volume :
- 16
- Database :
- OpenAIRE
- Journal :
- Soft Matter
- Accession number :
- edsair.doi.dedup.....cd5a214c63470fe7bcfe7e997c69c716