Structural transitions for 2D systems with competing interactions in logarithmic traps
We propose a confinement model and study numerically the structural properties of particles with competing interactions in logarithmic traps (i.e., the confinement potential is a logarithmic function). A rich variety of cluster structures are observed as a function of trap steepness, trap size, and particle density. In addition to the consistent results with previous studies for a harmonic confinement, we observe some new stable structures, including a hybrid cluster structure consisting of clumps surrounded by a circular stripe, parallel stripes, or homogeneous voids surrounded by a ringlike arrangement of clumps, and a gear-like cluster with fringed outer rims evenly arranged along the circumference. Our work reveals that such self-organized structures arise due to the radial density reconfiguration in a finite confined system corresponding to the unconstrained systems, which is controlled by the interplay between the long-range repulsions and the attractions to the minimum of the confinement potential. Such results are likely relevant in understanding the structural properties of confined mermaid systems.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2020 |
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| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:152 |
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| Enthalten in: |
The Journal of chemical physics - 152(2020), 5 vom: 07. Feb., Seite 054906 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Xu, X B [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Revised 11.02.2020 published: Print Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1063/1.5140816 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM306300109 |
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| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a We propose a confinement model and study numerically the structural properties of particles with competing interactions in logarithmic traps (i.e., the confinement potential is a logarithmic function). A rich variety of cluster structures are observed as a function of trap steepness, trap size, and particle density. In addition to the consistent results with previous studies for a harmonic confinement, we observe some new stable structures, including a hybrid cluster structure consisting of clumps surrounded by a circular stripe, parallel stripes, or homogeneous voids surrounded by a ringlike arrangement of clumps, and a gear-like cluster with fringed outer rims evenly arranged along the circumference. Our work reveals that such self-organized structures arise due to the radial density reconfiguration in a finite confined system corresponding to the unconstrained systems, which is controlled by the interplay between the long-range repulsions and the attractions to the minimum of the confinement potential. Such results are likely relevant in understanding the structural properties of confined mermaid systems | ||
| 650 | 4 | |a Journal Article | |
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| 700 | 1 | |a Xu, X N |e verfasserin |4 aut | |
| 700 | 1 | |a Fang, G Y |e verfasserin |4 aut | |
| 700 | 1 | |a Gu, M |e verfasserin |4 aut | |
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