The magnetic particles prepared through coprecipitation suspend stably in the fluid of polydimethylsiloxane after twice dispersing,and so the polydimethylsiloxane based ferrofluid is prepared.

But changes in magnetization orientation(superparamagnetism) tend to occur when the size of magnetic particles is reduced below its critical size ,resulting in lost information, and the media can not be used for data storage any more- So reducing the critical size and increasing the thermal stability of magnetic particles are the keys to high density of data storage.

Herein, a novel high-throughput SNP genotyping method using magnetic particles (MPs) in situ PCR and universal tags was described.

Results: Magnetic preparations were made of magnetic granules and drug by pharmaceutical technology and were used widely in many drug-releasing system.

Preparation and characterization of polystyrene-acrylamide/ferrite magnetic particle;

Preparation and characterization of macromolecular magnetic particle enhanced by PAMAM dendrimers;

The preparation and characterization of polystyrene-acrylamide magnetic particle;

The fluidization behavior of SiO_2 nano-particles in magnetic fluidized bed (MFB) by adding coarse magnets was investigated.

By adding coarse magnets with the average size of 2 mm into the fluidized bed, the large agglomerate, bubble and channeling can be broken up, the bubbling and elutriation were also restrained because of coarse magnets vibrating violently under an axial magnetic filed.