Anisotropic colloids through non-trivial buckling.
TL;DR: A study on buckling of colloidal particles, including experimental, theoretical and numerical developments, shows that 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.
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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.
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Citations
Spherical, Dimpled, and Crumpled Hybrid Colloids with Tunable Surface Morphology
Vera Meester,Daniela J. Kraft +1 more
TL;DR: This work developed a synthetic approach to obtain both spherical and shape-anisotropic hybrid colloids with tunable surface morphology and shows that, by varying only two experimental parameters, the concentration of the inhibitor and of TPM during swelling linear polystyrene colloids, three different types of particles can be synthesized.
Unloading and reloading colloidal microcapsules with apolar solutions by controlled and reversible buckling.
TL;DR: A new experimental method to encapsulate and release oils and fluorescent molecules into preformed elastic colloidal microcapsules of polydimethylsiloxane (PDMS)-filled siloxane shells, which are cross-linked with tetraethoxysilane.
Post-buckling dynamics of spherical shells
Marcel Mokbel,Adel Djellouli,Adel Djellouli,Catherine Quilliet,Sebastian Aland,Gwennou Coupier +5 more
TL;DR: In this article, the intrinsic dynamics of spherical shells immersed in a fluid in the vicinity of their buckled state, through experiments and three-dimensional axisymmetric simulations, are explored.
Let's deflate that beach ball.
TL;DR: In this paper, the authors investigate the relationship between pre-buckling and postbuckling states as a function of shell properties, within the deflation process of shells of an isotropic material.
Polymer-Wrapped Oil Droplets and Polymer Particles with Complex Curvilinear Polyhedral Geometries by Surfactant-Driven Elastocapillary Buckling of Polymer Capsules
Xuanrong Guo,Saverio E. Spagnolie,Nicholas L. Abbott,David M. Lynn +3 more
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