Bistability of a helical filament confined on a cylinder

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题名:	Bistability of a helical filament confined on a cylinder
作者:	Zhou, Zicong
日期:	2022-02-14
上传时间:	2023-04-28 17:46:37 (UTC+8)
出版者:	American Physical Society
摘要:	The natural configuration of an intrinsically curved and twisted filament is uniquely a helix so that it can be referred to as a helical filament. We find that confining a helical filament on a cylinder can create a bistable state. When c0R = 0.5, where c0 is the intrinsic curvature of filament and R is the radius of cylinder, the phase diagram for the stability of a helix contains three regimes. Regime I has a small intrinsic twisting rate (ITR) and exhibits a bistable state which consists of two isoenergic helices. In regime II, the filament has a moderate ITR and the bistable state consists of a metastable low-pitch helix and a stable nonhelix. In regime III, the helix is unstable, owing to a large ITR. A similar phenomenon occurs when c0R ∼ 0.5. Monte Carlo simulation confirms these conclusions and indicates further that there are bistable nonhelices in regime III. This bistable system offers a prospective green material since the wide range of parameters and distinctive configurations for bistable states favor its realization and application
關聯:	PHYSICAL REVIEW E 105(2), 024502
DOI:	10.1103/PhysRevE.105.024502
显示于类别:	[物理學系暨研究所] 期刊論文

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