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	The study of the elasticity of spider dragline silk with liquid crystal model
	Cui, Lin-ying ; Liu, Fei ; Ou-Yang, Zhong-can
	2010-10-12 ; 2010-10-12
关键词	Spider dragline silk Liquid crystal material Elasticity Nematics MECHANICAL-PROPERTIES FIBERS ORIENTATION BEHAVIOR PHASE SUPERCONTRACTION ELONGATION ELASTOMERS ARANEAE STRAIN Materials Science, Multidisciplinary Materials Science, Coatings & Films Physics, Applied Physics, Condensed Matter
中文摘要	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.
语种	英语 ; 英语
出版者	ELSEVIER SCIENCE SA ; LAUSANNE ; PO BOX 564, 1001 LAUSANNE, SWITZERLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/81596]
专题	清华大学
推荐引用方式 GB/T 7714	Cui, Lin-ying,Liu, Fei,Ou-Yang, Zhong-can. The study of the elasticity of spider dragline silk with liquid crystal model[J],2010, 2010.
APA	Cui, Lin-ying,Liu, Fei,&Ou-Yang, Zhong-can.(2010).The study of the elasticity of spider dragline silk with liquid crystal model..
MLA	Cui, Lin-ying,et al."The study of the elasticity of spider dragline silk with liquid crystal model".(2010).

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