Nonlinear elastic model for faceting of vesicles with soft grain boundaries

Rastko Sknepnek, Monica Olvera de la Cruz

    Research output: Contribution to journalArticlepeer-review

    13 Citations (Scopus)

    Abstract

    We use an elastic model to explore faceting of solid-wall vesicles with elastic heterogeneities. We show that faceting occurs in regions where the vesicle wall is softer, such as areas of reduced wall thicknesses or concentrated in crystalline defects. The elastic heterogeneities are modeled as a second component with reduced elastic parameters. Using simulated annealing Monte Carlo simulations we obtain the vesicle shape by optimizing the distributions of facets and boundaries. Our model allows us to reduce the effects of the residual stress generated by crystalline defects, and reveals a robust faceting mechanism into polyhedra other than the icosahedron.

    Original languageEnglish
    Article numberARTN 050501
    Number of pages4
    JournalPhysical Review E: Statistical, Nonlinear, and Soft Matter Physics
    Volume85
    Issue number5
    DOIs
    Publication statusPublished - 22 May 2012

    Keywords

    • membranes
    • order
    • carboxysomes
    • defects
    • morphology
    • shells

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