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题名: The study of the elasticity of spider dragline silk with liquid crystal model
作者: Cui, Lin-ying ;  Liu, Fei ;  Ou-Yang, Zhong-can
刊名: THIN SOLID FILMS
出版日期: 2009
卷号: 518, 期号:2, 页码:735-738
关键词: MECHANICAL-PROPERTIES ;  FIBERS ;  ORIENTATION ;  BEHAVIOR ;  PHASE ;  SUPERCONTRACTION ;  ELONGATION ;  ELASTOMERS ;  ARANEAE ;  STRAIN
学科分类: Physics
通讯作者: Ou-Yang, ZC , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China
部门归属: [Ou-Yang, ZC] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Cui, LY] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China; [Liu, F; Ou-Yang, ZC] Tsinghua Univ, Ctr Adv Study, Beijing 100084, Peoples R China
英文摘要: Spider dragline silk is an optimal biomaterial with a combination of high tensile strength and high elasticity, and it has long been suggested to belong to liquid crystalline materials. However, a satisfactory liquid crystal description for the mechanical properties of the dragline is still missing. To solve the long existing problem, we generalized the Maier-Saupe theory of nematics to construct a liquid crystal model of the deformation mechanism of the dragline silk. We show that the remarkable elasticity of the dragline can be understood as the isotropic-nematic phase transition of the chain network with the beginning of the transition corresponding to the yield point. The calculated curve fits well with the measurements and the yield point is obtained self-consistently within our framework. The present theory can also qualitatively account for the drop of stress in supercontracted spider silk. All these comprehensive agreements between theory and experiments strongly indicate the dragline to belong to liquid crystal materials. (C) 2009 Elsevier B.V. All rights reserved.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000271776300074
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5207
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Cui, Lin-ying,Liu, Fei,Ou-Yang, Zhong-can. The study of the elasticity of spider dragline silk with liquid crystal model[J]. THIN SOLID FILMS,2009,518(2):735-738.
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