Stretching a Semiflexible Polymer in a Tube
详细信息 查看官网全文
- 英文论文题名：Stretching a Semiflexible Polymer in a Tube
- 论文作者：王记增
- 英文论文作者：WANG Ji-Zeng ; Key Laboratory of Mechanics on Western Disaster and Environment ; Ministry of Education ; College of Civil Engineering and Mechanics ; Lanzhou University
- 年：2016
- 作者机构：Key Laboratory of Mechanics on Western Disaster and Environment,Ministry of Education,College of Civil Engineering and Mechanics,Lanzhou University;
- 英文论文关键词：wormlike chain model ; tube confinement ; Odijk length ; stretch ; generalized bead-rod model ; Brownian dynamics simulation
- 会议召开时间：2016-09-27
- 会议录名称：第十四届全国物理力学学术会议缩编文集
- 语种：英文
- 分类号：O631
- 学会代码：AGLU
- 会议名称：第十四届全国物理力学学术会议
- 会议地点：中国四川绵阳
- 主办单位：中国力学学会物理力学专业委员会
- 学会名称：中国力学学会
- 页数：1
- 文件大小：27k
- 原文格式：O
- 会议级别：全国
摘要
How 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 derived a new compact formula on the extension of the wormlike chain of finite length strongly confined in a tube and simultaneously stretched by an external force.We also suggested a new deflection length,which together with the force-extension relation is valid for a much 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.
How 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 derived a new compact formula on the extension of the wormlike chain of finite length strongly confined in a tube and simultaneously stretched by an external force.We also suggested a new deflection length,which together with the force-extension relation is valid for a much 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.
How 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 derived a new compact formula on the extension of the wormlike chain of finite length strongly confined in a tube and simultaneously stretched by an external force.We also suggested a new deflection length,which together with the force-extension relation is valid for a much 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.
引文