Stretching a semiflexible polymer in a tube

doi:10.3390/polym8090328

	Stretching a semiflexible polymer in a tube
	Li, Runhua; Wang, Jizeng; Wang, JZ (reprint author), Lanzhou Univ, Coll Civil Engn & Mech, Key Lab Mech Disaster & Environm Western China, Minist Educ, Lanzhou 730000, Gansu, Peoples R China.
刊名	Polymers
	2016-09-09
卷号	8 期号:9
关键词	wormlike chain model tube confinement Odijk length stretch GBR model Brownian dynamics simulation
ISSN号	2073-4360
DOI	10.3390/polym8090328
文献子类	Article
英文摘要	How the statistical behavior of semiflexible polymer chains may be affected by force stretching and tube confinement is a classical unsolved problem in polymer physics. Based on the Odijk deflection theory and normal mode decomposition in terms of Fourier expansion, we have derived a new compact formula for the extension of a wormlike chain of finite length strongly confined in a tube and simultaneously stretched by an external force. We have also suggested a new deflection length, which together with the force-extension relation is valid for a very extended range of the tube-diameter/persistence-length ratio comparing to the classic Odijk theory. The newly derived formula has no adjustable fitting parameters for the whole deflection regime; in contrast, the classic Odijk length needs different prefactors to fit the free energy and average extension, respectively. Brownian dynamics simulations based on the Generalized Bead-Rod (GBR) model were extensively performed, which justified the theoretical predictions.
学科主题	Polymer Science
出版地	BASEL
资助项目	国家自然科学基金项目
项目编号	National Natural Science Foundation of China [11472119, 11421062]
语种	英语
WOS记录号	WOS:000385533500018
资助机构	NSFC
内容类型	期刊论文
源URL	[http://ir.lzu.edu.cn/handle/262010/182557]
专题	土木工程与力学学院_期刊论文
通讯作者	Wang, JZ (reprint author), Lanzhou Univ, Coll Civil Engn & Mech, Key Lab Mech Disaster & Environm Western China, Minist Educ, Lanzhou 730000, Gansu, Peoples R China.
推荐引用方式 GB/T 7714	Li, Runhua,Wang, Jizeng,Wang, JZ . Stretching a semiflexible polymer in a tube[J]. Polymers,2016,8(9).
APA	Li, Runhua,Wang, Jizeng,&Wang, JZ .(2016).Stretching a semiflexible polymer in a tube.Polymers,8(9).
MLA	Li, Runhua,et al."Stretching a semiflexible polymer in a tube".Polymers 8.9(2016).