Anisotropic colloids through non-trivial buckling

Abstract

We present a study on buckling of colloidal particles, including experimental, theoretical and numerical developments. Oil-filled thin shells prepared by emulsion templating show buckling in mixtures of water and ethanol, due to dissolution of the core in the external medium. This leads to conformations with a single depression, either axisymmetric or polygonal depending on the geometrical features of the shells. These conformations could be theoretically and/or numerically reproduced in a model of homogeneous spherical thin shells with bending and stretching elasticity, submitted to an isotropic external pressure.

submitted to EPJE

References in corpus (2)

• Echinocyte Shapes: Bending, Stretching and Shear Determine Spicule Shape and Spacing
• Depressions at the surface of an elastic spherical shell submitted to external pressure

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