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题名: Study of Friction between Liquid Crystals and Crystalline Surfaces by Molecular Dynamic Simulations
作者: Zhang, YW ;  Chen, XS ;  Chen, W
刊名: COMMUNICATIONS IN THEORETICAL PHYSICS
出版日期: 2016
卷号: 66, 期号:4, 页码:467-473
关键词: liquid crystal ;  friction ;  slip length ;  molecular dynamics simulation
学科分类: Physics
通讯作者: Chen, W (reprint author), Chinese Acad Sci, Comp Network Informat Ctr, POB 349, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: The lubrication characteristics of liquid crystal (LC) molecules sheared between two crystalline surfaces obtained from molecular dynamics (MD) simulations are reported in this article. We consider a coarse-grained rigid bead-necklace model of the LC molecules confined between two atomic surfaces subject to different shearing velocities. A systematic study shows that the slip length of LC lubrication changes significantly as a function of the LC-surface interaction energy, which can be well described though a theoretical curve. The slip length increases as shear rate increases at high LC-surface interaction energy. However, this trend can not be observed for low interaction energy. The orientation of the LC molecules near the surface is found to be guided by the atomics surfaces. The influence of temperature on the lubrication characteristics is also discussed in this article.
类目[WOS]: Physics, Multidisciplinary
关键词[WOS]: ULTRALOW FRICTION ;  MESOGENIC FLUID ;  BEHAVIOR ;  WATER
收录类别: SCI
项目资助者: National Natural Science Foundation of China [11504384, 11121403]
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21514
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Recommended Citation:
Zhang, YW,Chen, XS,Chen, W. Study of Friction between Liquid Crystals and Crystalline Surfaces by Molecular Dynamic Simulations[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2016,66(4):467-473.
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