Anisotropic colloids through non-trivial buckling
  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. 
Catherine Quilliet (LSP, SCM), Carmen Zoldesi (SCM), Christophe Riera,   Alfons Van Blaaderen (SCM), Arnout Imhof (SCM)