Polymorphs are not mythical, chimeric beasts—they are substances with identical chemical compositions but differing crystal structures that also exhibit different physical and chemical properties.

(a) Microscopic image and schematic representation of crystal polymorphs obtained via heteroepitaxial growth (α-phase: green; β-phase: red). Polystyrene particles with a diameter of 860 nm were used ...

Ice surfaces have a thin layer of water below its melting temperature of 0℃. Such premelting phenomenon is important for skating and snowflake growth. Similarly, liquid often crystallizes into a thin ...