Magnetic Control of Fe3O4 Nanomaterial for Fat Ablation in Microchannel

Materials

Ming Chang³  Ming-Yi Chang¹  Wei-Siou Lin¹  Jacque Lynn Gabayno² 

[1] Department of Mechanical Engineering, Chung Yuan Christian University, Chungli, Taoyuan 32023, Taiwan;Mapua Institute of Technology, Intramuros, Manila 1002, Philippines;;College of Mechanical Engineering and Automation, Huaqiao University, Xiamen 361021, Fujian, China

关键词: Fe₃O₄ nanoparticles;    magnetic control;    oleic-acid;    fat ablation;   

DOI  :  10.3390/ma8115429

来源: mdpi

【 摘 要 】

In this study, surface modification of iron (II, III) oxide Fe₃O₄ nanoparticles by oleic acid (OA) coating is investigated for the microablation of fat in a microchannel. The nanoparticles are synthesized by the co-precipitation method and then dispersed in organic solvent prior to mixing with the OA. The magnetization, agglomeration, and particle size distribution properties of the OA-coated Fe₃O₄ nanoparticles are characterized. The surface modification of the Fe₃O₄ nanoparticles reveals that upon injection into a microchannel, the lipophilicity of the OA coating influences the movement of the nanoparticles across an oil-phase barrier. The motion of the nanoparticles is controlled using an AC magnetic field to induce magnetic torque and a static gradient field to control linear translation. The fat microablation process in a microchannel is demonstrated using an oscillating driving field of less than 1200 Am⁻¹.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.