Used in bioseparation and diagnostic applications due to their uniform size and magnetic responsiveness. The silica shell allows easy surface modification with functional groups for binding antibodies, DNA, or enzymes. Enables rapid isolation of target biomolecules from complex mixtures using a magnet, making them ideal for automated immunoassays, nucleic acid purification, and cell separation. Their monodispersity ensures consistent performance in high-throughput and microfluidic systems. Also applied in drug delivery research and magnetic resonance imaging (MRI) contrast enhancement.