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arXiv · 1204.0118

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

Moutushi Dutta Choudhury·Sayanee Jana·Sruti Dutta·Sujata Tarafdar
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Abstract

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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Moutushi Dutta Choudhury, Sayanee Jana, Sruti Dutta, Sujata Tarafdar. 2012-03-31. Pattern Formation in a Drying Drop of Starch Gel with Sodium Chloride. https://arxiv.org/abs/1204.0118

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