Drying of a Microdroplet of Water Suspension of Nanoparticles: from Surface Aggregates to Microcrystal

Details Drying of a Microdroplet of Water Suspension of Nanoparticles: from Surface Aggregates to Microcrystal Drying of a Microdroplet of Water Suspension of Nanoparticles: from Surface Aggregates to Microcrystal

2011-04-04

arxiv.org/abs/1104.0578v1

J. Phys. Chem. C, 112, 16919 (2008)

Physics

Condensed Matter

Soft Condensed Matter

5 pages, 6 figures

Scientific paper

10.1021/jp806349q

The method of formation of nanoparticle aggregates such as high-coverage spherical shells of microspheres or 3-D micro crystals grown in the geometry unaffected by a substrate is described. In the reported experiment, the evaporation of single levitated water droplet containing 200 nm diameter polystyrene spheres was studied. Successive stages of the drying process were discussed by analyzing the intensity of light elastically scattered by the evaporating droplet. The numerically simulated self-assembly coincides nicely with the observed morphologies resulting from transformation of a droplet of suspension into a solid microcrystal via kinetically driven self-assembly of nanostructures.

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