Deep ultraviolet (DUV) refers to a specific range of ultraviolet light with wavelengths between 200 and 300 nanometers. This part of the electromagnetic spectrum is shorter than visible light and is known for its ability to interact with various materials, making it useful in applications like sterilization and photolithography. In technology, DUV is commonly used in the manufacturing of semiconductors, where it helps create intricate patterns on silicon wafers. Additionally, DUV light is effective in disinfection processes, as it can destroy bacteria and viruses, contributing to public health and safety measures in various environments.