Elastic deformation of a fluid membrane upon colloid binding
Elastic deformation of a fluid membrane upon colloid binding
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DOI：
10.1103/physreve.69.031903
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发表时间：
2004-03-01
影响因子：
2.4
通讯作者：
Deserno, M
中科院分区：
文献类型：
--
作者：
Deserno, M
当胶体颗粒粘附到流体膜上时，它引起膜中的弹性变形，这与其自身的结合相反。这种平衡的结构和精力充沛的方面进行了调查的框架内的Helfrich哈密顿量。基于膜轮廓的完全非线性形状方程，发现了一条连续的结合转变线和第二条不连续的结合转变线，它们在一个不寻常的三相点处相遇。低张力的制度进行了研究分析，使用一个小的梯度膨胀，而在限制大张力缩放参数，从而量化的渐近行为的相边界，程度的包装，和能量障碍。成熟的动物病毒出芽讨论作为一个生物学的例子，这样的胶体膜相互作用事件。
When a colloidal particle adheres to a fluid membrane, it induces elastic deformations in the membrane which oppose its own binding. The structural and energetic aspects of this balance are investigated within the framework of a Helfrich Hamiltonian. Based on the full nonlinear shape equations for the membrane profile, a line of continuous binding transitions and a second line of discontinuous envelopment transitions are found, which meet at an unusual triple point. The regime of low tension is studied analytically using a small gradient expansion, while in the limit of large tension scaling arguments are derived which quantify the asymptotic behavior of phase boundary, degree of wrapping, and energy barrier. The maturation of animal viruses by budding is discussed as a biological example of such colloid-membrane interaction events.