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.
Quilliet
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Laboratoire de Spectrométrie Physique, CNRS UMR 5588 and Université Joseph Fourier, 140 avenue de la Physique, 38402 Saint-Martin d'Hères Cedex, France. Catherine.Quilliet@ujf-grenoble.fr
Zoldesi
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Riera
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van Blaaderen
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Imhof
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D000465:Algorithms; D016880:Anisotropy; D002627:Chemistry, Physical / Q000379:methods; D003102:Colloids / Q000737:chemistry*; D003198:Computer Simulation; D000431:Ethanol / Q000737:chemistry; D015233:Models, Statistical; D008968:Molecular Conformation; D055095:Optics and Photonics; D012997:Solvents / Q000737:chemistry; D014867:Water / Q000737:chemistry
D003102:Colloids; D012997:Solvents; D014867:Water; D000431:Ethanol