The importance of nanoparticle separation lies in its ability to enhance the performance and efficacy of products and processes that utilize nanoparticles. For example, in drug delivery systems, separating nanoparticles by size can ensure uniform distribution and controlled release of drugs. In materials science, it can improve the mechanical and electrical properties of nanocomposites. Accurate separation can also prevent agglomeration and improve the overall stability of nanoparticle suspensions.