Pattern Formation in a Drying Drop of Starch Gel with Sodium Chloride

Details Pattern Formation in a Drying Drop of Starch Gel with Sodium Chloride Pattern Formation in a Drying Drop of Starch Gel with Sodium Chloride

2012-03-31

arxiv.org/abs/1204.0118v1

Physics

Condensed Matter

Soft Condensed Matter

1 figure

Scientific paper

A drop of aqueous potato starch gel with a certain mole fraction of NaCl, when dried on a glass slide, exhibits strong segregation and intricate pattern formation phenomena. The salt forms radial dendritic crystalline aggregates near the centre, with the starch separating out in the form of a transparent band at the periphery. Photographs and micrographs show a series of concentric rings with different texture.

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