| 標題：Elasticity and stability of a helical filament with spontaneous curvatures and isotropic bending rigidity |
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| 學年 | 96 |
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| 學期 | 1 |
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| 出版（發表）日期 | 2007/12/10 |
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| 作品名稱 | Elasticity and stability of a helical filament with spontaneous curvatures and isotropic bending rigidity |
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| 作品名稱（其他語言） | |
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| 著者 | 周子聰; Zhou, Zicong; Joós, Béla; Lai, Pik-yin; Young, Yuan-shin; Jan, Jeng-huei |
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| 單位 | 淡江大學物理學系 |
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| 出版者 | World Scientific Publishing |
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| 著錄名稱、卷期、頁數 | Modern Physics Letters B 21(28), pp.1895-1913 |
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| 摘要 | We derive the shape equations in terms of Euler angles for a uniform elastic rod with isotropic bending rigidity and spontaneous curvature, and study within this model the elasticity and stability of a helical filament under uniaxial force and torque. We find that due to the special requirements on the boundary conditions, a static slightly distorted helix cannot exist in this system except in some special cases. We show analytically that the extension of a helix may undergo a one-step sharp transition. This agrees quantitatively with experimental observations for a stretched helix in a chemically-defined lipid concentrate (CDLC). We predict further that under twisting, the extension of a helix in CDLC may also exhibit similar behavior. We find that a negative twist tends to destabilize a helix. |
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| 關鍵字 | Elasticity;biopolymer;helix;filament |
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| 語言 | 英文 |
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| ISSN | 0217-9849 |
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| 期刊性質 | 國內 |
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| 收錄於 | |
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| 產學合作 | |
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| 通訊作者 | |
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| 審稿制度 | 否 |
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| 國別 | 中華民國 |
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| 公開徵稿 | |
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| 出版型式 | ,電子版 |
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| 相關連結 | |
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