Evaporating mixtures of two liquids create hypnotic designs
Signature patterns are the result of differing surface tension
![isopropanol ethylene glycol mix droplet](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2020/02/022420_MT_droplet-pattern_feat.jpg?fit=1028%2C579&ssl=1)
Droplets containing liquids with different surface tensions, like isopropanol and ethylene glycol (shown), bloom into intricate patterns as they evaporate.
A.P. Mouat et al/Physical Review Letters 2020