教師資料查詢 | 類別: 期刊論文 | 教師: 周子聰 Zicong Zhou (瀏覽個人網頁)

標題:Mechanical property of the helical configuration for a twisted intrinsically straight biopolymer
學年107
學期2
出版(發表)日期2019/05/01
作品名稱Mechanical property of the helical configuration for a twisted intrinsically straight biopolymer
作品名稱(其他語言)
著者Zicong Zhou and Chen-Xu Wu
單位
出版者
著錄名稱、卷期、頁數European Biophysics Journal 48(4), p.329–340
摘要We explore the effects of two typical torques on the mechanical property of the helical configuration for an intrinsically straight filament or biopolymer either in three-dimensional space or on a cylinder. One torque is parallel to the direction of a uniaxial applied force, and is coupled to the cross section of the filament. We obtain some algebraic equations for the helical configuration and find that the boundary conditions are crucial. In three-dimensional space, we show that the extension is always a monotonic function of the applied force. On the other hand, for a filament confined on a cylinder, the twisting rigidity and torque coupled to the cross section are irrelevant in forming a helix if the filament is isotropic and under free boundary condition. However, the twisting rigidity and the torque coupled to the cross section become crucial when the Euler angle at two ends of the filament are fixed. Particularly, the extension of a helix can subject to a first-order transition so that in such a condition a biopolymer can act as a switch or sensor in some biological processes. We also present several phase diagrams to provide the conditions to form a helix.
關鍵字Mechanical property;Twisted biopolymer;Helix;Phase transition
語言英文
ISSN1432-1017
期刊性質國外
收錄於SCI;EI;
產學合作
通訊作者
審稿制度
國別瑞士
公開徵稿
出版型式,電子版
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