材料科学
电磁屏蔽
超材料
微波食品加热
聚偏氟乙烯
铁氧体(磁铁)
介电常数
静电纺丝
光电子学
电磁干扰
电磁辐射
复合材料
电介质
钛酸钡
光学
聚合物
电子工程
工程类
物理
量子力学
作者
V. Revathi,Sandeep Kumar,V. Subramanian,C. Muthamizhchelvan
出处
期刊:European Physical Journal-applied Physics
日期:2015-11-01
卷期号:72 (2): 20402-20402
被引量:8
标识
DOI:10.1051/epjap/2015150368
摘要
Metamaterial structures are artificial structures that are useful in controlling the flow of electromagnetic radiation. In this paper, composite fibers of sub-micron thickness of barium substituted magnesium ferrite (Ba0.2Mg0.8Fe2O4) – polyvinylidene fluoride obtained by electrospinning is used as a substrate to design electromagnetic interference shielding structures. While electrospinning improves the ferroelectric properties of the polyvinylidene fluoride, the presence of barium magnesium ferrite modifies the magnetic property of the composite fiber. The dielectric and magnetic properties at microwave frequency measured using microwave cavity perturbation technique are used to design the reflection as well as absorption based tunable metamaterial structures for electromagnetic interference shielding in microwave frequency region. For one of the structures, the simulation indicates that single negative metamaterial structure becomes a double negative metamaterial under the external magnetic field.
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