- Conference date: 22–24 September 2010
- Location: Mumbai, (India)
Sphere to deformed doughnut type transformation of colloidal droplets during evaporation induced assembly of colloidal silica and E. coli was observed. Distortion modulations get amplified with increase in volume fraction of anisotropic soft colloidal component. Reduction in elastic constants of formed shell, at the boundary of a drying droplet, and the anisotropic nature of bacterial component facilitate the deformation process. The charge modification of E. coli surface by Poly cationic Polytheleneimine ceases the morphological transformation and results spherical assembled grains. Hierarchical structures of these assembled colloidal grains have been probed using electron microscopy and small‐ angle neutron scattering techniques.
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