👉 Ultramicrocrystalline material, also known as microcrystalline powder, is a type of solid substance that has been reduced to a very small particle size. These particles are typically less than 100 nanometers (nm) in diameter and contain smaller crystallites. Ultramicrystals are extremely fine and delicate, with the smallest particles being visible only under magnification. They can be used for various applications such as optical fibers, solar cells, and biomedical
