The surface-modified magnetic nanoparticles have been widely used in biological and biomedical areas such as immobilization of biomolecules; separation of metal ions, cells, proteins, DNA; immunoassay, biochemical analysis and magnetic resonance imaging (
The surface-modified magnetic nanoparticles have been widely used in biological and biomedical areas such as immobilization of biomolecules; separation of metal ions, cells, proteins, DNA; immunoassay, biochemical analysis and magnetic resonance imaging (
其中的壳结构既具有生物适应性，又具有可键合生物分子如细胞、蛋白质、酶、抗体和核酸的活性基团，而核具有磁性特性。