Fluid-membrane tethers: Minimal surfaces and elastic boundary layers

作     者：Thomas R. Powers Greg Huber Raymond E. Goldstein 

作者机构：Division of Engineering Brown University Providence Rhode Island 02912 Department of Physics University of Massachusetts at Boston Boston Massachusetts 02125 Department of Physics and Program in Applied Mathematics University of Arizona Tucson Arizona 85721 

出 版 物：《Physical Review E》 (物理学评论E辑：统计、非线性和软体物理学)

年 卷 期：2002年第65卷第4期

页      面：041901-041901页

核心收录：

学科分类：07[理学] 070203[理学-原子与分子物理] 0702[理学-物理学] 

基　　金：Directorate for Mathematical and Physical Sciences, MPS, (9812526) Directorate for Mathematical and Physical Sciences, MPS 

主　　题：Fluid dynamics 

摘      要：Thin cylindrical tethers are common lipid bilayer membrane structures, arising in situations ranging from micromanipulation experiments on artificial vesicles to the dynamic structure of the Golgi apparatus. We study the shape and formation of a tether in terms of the classical soap-film problem, which is applied to the case of a membrane disk under tension subject to a point force. A tether forms from the elastic boundary layer near the point of application of the force, for sufficiently large displacement. Analytic results for various aspects of the membrane shape are given.