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Title: Elastic and dynamic properties of membrane phase-field models
Author: Lázaro, Guillermo R.
Pagonabarraga Mora, Ignacio
Hernández Machado, Aurora
Keywords: Matèria condensada tova
Química supramolecular
Membranes (Biologia)
Soft condensed matter
Supramolecular chemistry
Membranes (Biology)
Issue Date: 24-Mar-2017
Publisher: Springer Verlag
Abstract: Phase-field models have been extensively used to study interfacial phenomena, from solidification to vesicle dynamics. In this article, we analyze a phase-field model that captures the relevant physical features that characterize biological membranes. We show that the Helfrich theory of elasticity of membranes can be applied to phase-field models, allowing to derive the expressions of the stress tensor, lateral stress profile and elastic moduli. We discuss the relevance and interpretations of these magnitudes from a phase-field perspective. Taking the sharp-interface limit we show that the membrane macroscopic equilibrium equation can be derived from the equilibrium condition of the phase-field interface. We also study two dynamic models that describe the behaviour of a membrane. From the study of the relaxational behaviour of the membrane we characterize the relevant dynamics of each model, and discuss their applications.
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It is part of: European Physical Journal E, 2017, vol. 40, p. 77
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ISSN: 1292-8941
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)
Articles publicats en revistes (Institut de Recerca en Sistemes Complexos (UBICS))

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