Abstract
Magnetic nanoparticles are a new type of functional material that develops rapidly and has high application value.Because of their high specific surface area,strong magnetic responsiveness,excellent biocompatibility and typical superparamagnetism,they have been widely used in the field of biomedical applications including magnetic separation,magnetic transfection,magnetic hyperthermia,magnetic targeting drug carrier and purification.In this paper,the preparative methods and surface modification techniques of magnetic nanoparticles were summarized,and the application and development of magnetic nanoparticles in the field of biomedicine were discussed.
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