Mechanical instability of a bistable helical filament confined on a cylinder
學年 111
學期 1
出版（發表）日期 2022-10-01
作品名稱 Mechanical instability of a bistable helical filament confined on a cylinder
作品名稱（其他語言）
著者 Zicong Zhou
單位
出版者
著錄名稱、卷期、頁數 Chinese Journal of Physics 79, p.395–408
摘要 We study mechanical property of a helical filament confined on a cylinder. With appropriate parameters such a system exhibits a natural bistable state consisted of two isoenergic configurations. We find closed-form expressions for helical configuration of the filament and related stability criterion. Exact calculations reveal that the extension of filament can undergo a single-step abrupt transition because both extension and energy can be triple-value functions of external force or torque in a critical regime. The larger the ratio between twisting rigidity and bending rigidity, the larger the critical regime and the abrupt change in extension; but the larger the intrinsic twisting rate, the smaller the critical regime and the abrupt change. Moreover, we evaluate the energy barrier between two isoenergic configurations and find that to make the filament jump from a low pitch helix up to a configuration with a large extension it is more efficient to apply a stretching force; but to induce a collapse from a configuration with a large extension to a low pitch helix it is better to apply a positive torque.
關鍵字
語言 en
ISSN
期刊性質 國外
收錄於 SCI EI Scopus
產學合作
通訊作者 Zicong Zhou
審稿制度 是
國別 TWN
公開徵稿
出版型式 ,電子版,紙本
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/123355 )