| 磁流体在交变磁场中的热效应研究 |
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| 引用本文： | 王煦漫,古宏晨,杨正强,王建华.磁流体在交变磁场中的热效应研究[J].功能材料,2005,36(4):507-508,512. |
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| 作者姓名： | 王煦漫 古宏晨 杨正强 王建华 |
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| 作者单位： | 华东理工大学,材料科学与工程学院,上海,200237;上海交通大学,纳米科学与技术工程中心,上海,200030;复旦大学,附属中山医院,上海,200032 |
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| 基金项目： | 上海市科技发展资助项目(0249nm071) |
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| 摘 要： | 制备了平均粒径分别为4、6 和8nm 的Fe3O4 粒子,将其分散在不同的介质中,在63kHz、7kA/m的交变磁场中研究其热效应。实验结果显示,粒径较大的Fe3O4 粒子具有较高的产热比功率(SAR),Fe3O4 粒子经过表面处理后SAR显著增加,而且SAR随表面活性剂不同而不同,还显示SAR与磁场强度的平方成正比。
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| 关 键 词： | 磁流体 磁流体热疗 热效应 交变磁场 |
| 文章编号： | 1001-9731(2005)04-0507-02 |
The study of heat effect of magnetic fluids under an alternating magnetic field |
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| WANG Xu-man,GU Hong-chen,YANG Zheng-qiang,WANG Jian-hua.The study of heat effect of magnetic fluids under an alternating magnetic field[J].Journal of Functional Materials,2005,36(4):507-508,512. |
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| Authors: | WANG Xu-man GU Hong-chen YANG Zheng-qiang WANG Jian-hua |
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| Affiliation: | WANG Xu-man~1,GU Hong-chen~2,YANG Zheng-qiang~3,WANG Jian-hua~3 |
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| Abstract: | The magnetite particles with different diameter were prepared and their heat effect was studied under a 63kHz, 7kA/m alternating magnetic field. The results showed that larger magnetite particles generated higher SAR values. By means of surface treatment by surfactants, SAR values of magnetite particles were enhanced greatly, and varied with different surfactants. Meanwhile, SAR values of magnetite particles were in direct proportion to the square law of amplitude of alternating magnetic field. |
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| Keywords: | magnetic fluid magnetic fluid hyperthermia heat effect alternating magnetic field |
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