Widely used in biomedical applications due to their uniform size and magnetic responsiveness. Ideal for targeted drug delivery, where the silica shell can be loaded with therapeutic agents and guided to specific sites in the body using external magnetic fields. Commonly employed in diagnostic assays and bioseparation processes, such as isolation of DNA, RNA, and proteins, thanks to the easy surface functionalization of silica and rapid magnetic separation. Also utilized in enzyme immobilization for biocatalysis, improving stability and reusability of enzymes. Their monodispersity ensures consistent performance in microfluidic systems and lab-on-a-chip devices. Additionally, applied in environmental monitoring for magnetic extraction of pollutants from complex matrices.