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Atomistic mechanisms of dynamics in a two-dimensional dodecagonal quasicrystal

文献类型：期刊论文

作者Zhao K(赵坤)6,7; Baggioli, Matteo3,4,5; Xu, WenSheng2; Douglas, Jack F1; Wang YJ(王云江)6,7
刊名JOURNAL OF CHEMICAL PHYSICS
出版日期2025-06-21
卷号162期号:23页码:20
ISSN号0021-9606
DOI10.1063/5.0270291
通讯作者Wang, Yun-Jiang(yjwang@imech.ac.cn)
英文摘要Quasicrystals have been observed in a variety of materials ranging from metal alloys to block copolymers. However, their structural and dynamical properties cannot be readily described in terms of conventional solid-state models of liquids and solids. We may expect the dynamics of this specific class of quasicrystalline materials to be more like glass-forming liquids in the sense of exhibiting large fluctuations in the local mobility ("dynamic heterogeneity") and non-Arrhenius temperature dependence of relaxation and diffusion. In this work, we investigate a model dodecagonal quasicrystal material in two dimensions (2D) using molecular dynamics simulations, with a focus on heterogeneous dynamics and non-Arrhenius relaxation and diffusion. As observed in glass-forming liquids and heated crystals, we observe a two-stage relaxation dynamics in the self-intermediate scattering function F-s(k, t) of our quasicrystal material. It involves a fast beta-relaxation and alpha-relaxation process having a highly temperature dependent relaxation time whose activation energy varies in concert with the extent of string-like collective motion, a phenomenon recognized to occur in glass-forming liquids at low temperatures and crystalline materials at elevated temperatures. After examining the dynamics of our dodecagonal quasicrystalline material in great detail, we conclude that the dynamics of these materials more closely resembles observations on metallic glass-forming liquids than crystalline materials.
分类号二类
WOS关键词LONG-WAVELENGTH FLUCTUATIONS ; COOPERATIVE MOTION ; PHASE-TRANSITIONS ; MODEL ; ORDER ; HETEROGENEITIES ; DIFFUSION ; PHONONS ; TILINGS ; GLASSY
资助项目National Natural Science Foundation of Chinahttps://doi.org/10.13039/501100001809[22222307] ; National Natural Science Foundation of Chinahttps://doi.org/10.13039/501100001809[21973089] ; National Natural Science Foundation of China[XDB0620103] ; National Natural Science Foundation of China[XDB0510301] ; Strategic Priority Research Program of the Chinese Academy of Sciences[2019SHZDZX01] ; Shanghai Municipal Science and Technology Major Project ; Yangyang Development Fund
WOS研究方向Chemistry ; Physics
语种英语
WOS记录号WOS:001512892300003
资助机构National Natural Science Foundation of Chinahttps://doi.org/10.13039/501100001809 ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Shanghai Municipal Science and Technology Major Project ; Yangyang Development Fund
其他责任者王云江
源URL[http://dspace.imech.ac.cn/handle/311007/101871]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.NIST, Mat Sci & Engn Div, Gaithersburg, MD 20899 USA
2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China;
3.Shanghai Res Ctr Quantum Sci, Shanghai 201315, Peoples R China;
4.Shanghai Jiao Tong Univ, Wilczek Quantum Ctr, Sch Phys & Astron, Shanghai 200240, Peoples R China;
5.Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai 200240, Peoples R China;
6.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
7.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China;
推荐引用方式
GB/T 7714		 Zhao K,Baggioli, Matteo,Xu, WenSheng,et al. Atomistic mechanisms of dynamics in a two-dimensional dodecagonal quasicrystal[J]. JOURNAL OF CHEMICAL PHYSICS,2025,162(23):20.
APA 赵坤,Baggioli, Matteo,Xu, WenSheng,Douglas, Jack F,&王云江.(2025).Atomistic mechanisms of dynamics in a two-dimensional dodecagonal quasicrystal.JOURNAL OF CHEMICAL PHYSICS,162(23),20.
MLA 赵坤,et al."Atomistic mechanisms of dynamics in a two-dimensional dodecagonal quasicrystal".JOURNAL OF CHEMICAL PHYSICS 162.23(2025):20.

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来源：力学研究所

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