Small deformations of Helfrich energy minimising surfaces with applications to biomembranes
Small deformations of Helfrich energy minimising surfaces with applications to biomembranes
复制标题
Helfrich 能量最小化表面的小变形及其在生物膜上的应用
DOI:
10.1142/s0218202517500269
复制
发表时间:
2016
影响因子:
3.5
通讯作者:
G. Hobbs
中科院分区:
文献类型:
--
作者:
C. M. Elliott;Hans Fritz;G. Hobbs
In this paper we introduce a mathematical model for small deformations induced by external forces of closed surfaces that are minimisers of Helfrich-type energies. Our model is suitable for the study of deformations of cell membranes induced by the cytoskeleton. We describe the deformation of the surface as a graph over the undeformed surface. A new Lagrangian and the associated Euler-Lagrange equations for the height function of the graph are derived. This is the natural generalisation of the well known linearisation in the Monge gauge for initially flat surfaces. We discuss energy perturbations of point constraints and point forces acting on the surface. We establish existence and uniqueness results for weak solutions on spheres and on tori. Algorithms for the computation of numerical solutions in the general setting are provided. We present numerical examples which highlight the behaviour of the surface deformations in different settings at the end of the paper.
影响因子:
3.4
作者:
Atilgan, E;Wirtz, D;Sun, SX
通讯作者:
Sun, SX
影响因子:
2.5
作者:
Elliott C
通讯作者:
Elliott C
影响因子:
14.2
作者:
Dziuk, Gerhard;Elliott, Charles M.
通讯作者:
Elliott, Charles M.