Chemical Research in Chinese Universities ›› 2016, Vol. 32 ›› Issue (6): 1052-1056.doi: 10.1007/s40242-016-6143-1

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Fabrication and Manipulation of Magnetic Composite Particles with Specific Shape and Size

SHI Qing, WANG Gong, LÜ Chao, XIA Hong   

  1. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, P. R. China
  • Received:2016-04-13 Revised:2016-07-15 Online:2016-12-01 Published:2016-10-08
  • Contact: XIA Hong, E-mail:hxia@jlu.edu.cn E-mail:hxia@jlu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.61435005, 51335008, 51373064, 61378053).

Abstract:

The fabrication of microscale polyethylene glycol diacrylate(PEGDA) hydrogel particles was demonstrated via magnetic property ultraviolet(UV) lithography techniques, polydimethylsiloxane(PDMS) soft stamp pre-paration techniques and micro-nano imprint technology in this paper. The results of compositional and morphological characterizations of magnetic microparticles show that the Fe3O4 nanoparticles with an average diameter of 100 nm are uniformly dispersed in hydrogel. Owing to the excellent magnetism of Fe3O4 nanoparticles, the fabricated hydrogel microparticles with different sizes and shapes were manipulated in water via applying an external magnetic fields. Three types of motions, translation, rotation and flip, were demonstrated with the manipulator. These microscale magnetic PEGDA hydrogel particles have a great application potential in manufacturing process, micro/nanomotors, and machines.

Key words: Magnetic nanoparticle, Hydrogel particle, Micro-nano imprint, Magnetic motor