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Journal Articles Physical Review Letters Year : 2012

Gel-phase vesicles buckle into specific shapes

Abstract

Osmotic deflation of giant vesicles in the rippled gel-phase $P_{\beta '}$ gives rise to a large variety of novel faceted shapes. These shapes are also found from a numerical approach by using an elastic surface model. A shape diagram is proposed based on the model that accounts for the vesicle size and ratios of three mechanical constants: in-plane shear elasticity and compressibility (usually neglected) and out-of-plane bending of the membrane. The comparison between experimental and simulated vesicle morphologies reveals that they are governed by a typical elasticity length, of the order of one micron, and must be described with a large Poisson's ratio.
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Dates and versions

hal-00649424 , version 1 (07-12-2011)

Identifiers

  • HAL Id : hal-00649424 , version 1

Cite

François Quéméneur, Catherine Quilliet, Magalie Faivre, Annie Viallat, Brigitte Pépin-Donat. Gel-phase vesicles buckle into specific shapes. Physical Review Letters, 2012, 108 (10), pp.108303. ⟨hal-00649424⟩
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