Nanowerk  August 13, 2022 Skeletal or concave polyhedral crystals appear in a variety of synthetic processes and natural environments. However, their morphology, size, and orientation are difficult to control because of their highly kinetic growth character. Researchers in Japan have developed a new method to produce micrometer-scale single crystals in the form of hollow vessels. Upon drop-casting of a heated ethanol solution onto a quartz substrate, the molecules spontaneously assembled into standing vessel-shaped single crystals uniaxially and synchronously over the wide area of the substrate, with small size polydispersity. The crystal edge was active even after consumption of the molecules […]