Pattern formation in drying droplets of polyelectrolyte and salt
Pattern formation in drying droplets of polyelectrolyte and salt
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DOI：
10.1063/1.3493687
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发表时间：
2010-09-21
影响因子：
4.4
通讯作者：
Muthukumar, M.
中科院分区：
文献类型：
--
作者：
Kaya, D.;Belyi, V. A.;Muthukumar, M.
我们发现了通过干燥含有固定量氯化钠的聚（苯乙烯磺酸钠）水溶液滴形成的壮观图案。盐分子的结晶在临界浓度下发生，并且诸如盐浓度和湿度的几个因素影响最终形成的图案。所观察到的图案包括同心环，针状结构，链的三角形的微晶等，我们描述了所观察到的现象伴随着一个理论模型的发生同心环。(C)2010年美国物理学会。[doi：10.1063/1.3493687]
We have discovered spectacular patterns formed by drying aqueous drops of sodium poly (styrene sulfonate) containing fixed amounts of sodium chloride. Crystallization of salt molecules takes place at a critical concentration and several factors such as the polyelectrolyte concentration and humidity affect the final patterns formed. The observed patterns include concentric rings, needle-like structures, chains of triangular-shaped crystallites, etc. We describe the observed phenomenology accompanied by a theoretical model for the occurrence of concentric rings. (C) 2010 American Institute of Physics. [doi:10.1063/1.3493687]