# Growth kinetics of NaCl crystals in a drying drop of gelatin: transition from faceted to dendritic growth

Source: [Growth kinetics of NaCl crystals in a drying drop of gelatin: transition from faceted to dendritic growth](<https://www.sota2.com/research/paper/68fa31781e209131ce87f09d>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T18:52:04.140Z

Authors: Moutushi Dutta Choudhury, Tapati Dutta, Sujata Tarafdar

Published: 2015-06-20T16:58:41.000Z

## Abstract

We report a study on the kinetics of drying of a droplet of aqueous gelatin containing sodium chloride. The process of drying recorded on video, clearly shows different regimes of growth leading to a variety of crystalline patterns. Large faceted crystals of $\\sim$mm size form in the early stages of evaporation, followed by highly branched multi-fractal patterns with micron sized features. We simulate the growth using a simple algorithm incorporating aggregation and evaporation, which reproduces the cross-over between the two growth regimes. As evaporation proceeds, voids form in the gel film. The time development of the fluid-void system can be characterized by an Euler number. A minimum in the Euler number marks the transition between the two regimes of growth.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1506.06269>)

[PDF](<https://arxiv.org/pdf/1506.06269.pdf>)