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Stability of stationary points for one-dimensional Willmore energy with spatially heterogeneous term

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Title: Stability of stationary points for one-dimensional Willmore energy with spatially heterogeneous term
Authors: Uesaka, Masaaki Browse this author
Nakamura, Ken-Ichi Browse this author →KAKEN DB
Ueda, Keiichi Browse this author →KAKEN DB
Nagayama, Masaharu Browse this author →KAKEN DB
Keywords: Willmore energy
Spatial heterogeneity
Cell adhesion
Epidermal membrane
Issue Date: Mar-2021
Publisher: Elsevier
Journal Title: Physica D: Nonlinear Phenomena
Volume: 417
Start Page: 132812
Publisher DOI: 10.1016/j.physd.2020.132812
Abstract: We consider a variational problem that consists of the Willmore energy of planar curves and a linear term in the curvature with a spatially heterogeneous coefficient. This coefficient is assumed to be a piecewise constant function. The variational problem arises from the modeling of the epidermal membrane in human skin. It has been predicted that the spatial heterogeneity of cell adhesion is one of the important factors in the protuberance formation of the membrane. We investigate the existence and stability of stationary points represented by symmetric graphs and find a condition for the existence of such stationary points by using the methods developed in the study of the Navier problem for Willmore energy. Especially, we give a necessary and sufficient condition for the existence of symmetric stationary points in terms of the gap size of the spatial heterogeneity. Moreover, we show some results on the stability of these stationary points. (c) 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license ( <comment>Superscript/Subscript Available</comment
Type: article
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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