Microstructuring is the process of designing, fabricating, and controlling structures or features at the microscale and often sub-microscale. This involves creating intricate patterns and arrangements to engineer specific material or device properties. As a research concept and methodological approach, it investigates the fundamental relationship between fine-scale architecture and macroscopic performance. Key characteristics include the application of advanced precision fabrication techniques and the exploitation of scale-dependent physical and chemical phenomena. Its significance lies in enabling novel functionalities and enhancing performance across various disciplines, including materials science, optics, microelectronics, and biomedical engineering, driving innovation in numerous technological applications.