<ul><li>Water droplets filled with nanoparticles leave behind deposits as they evaporate.</li><li>Particles in the evaporating droplet tend to gather at the drop's edge, similar to a coffee ring effect.</li><li>The solid deposit formed from the evaporating droplet covers the entire area and is shot through with cracks.</li><li>Cracking models developed in this research could have applications in analyzing old paintings, where cracks could reveal insights about the artist's techniques and the artwork's condition.</li></ul>

Quick-Drying, Fast-Cracking

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