论文标题
通过使用由Mu-Near-Zero培养基和铁氧体组成的复合材料超材料的显着增强磁屏蔽效应
Significant enhancement of magnetic shielding effect by using the composite metamaterial composed of mu-near-zero media and ferrite
论文作者
论文摘要
磁屏将在磁性近场控制中起重要作用。但是，高效，超薄，轻巧和廉价的要求仍然是挑战。在这里，我们首先提出了一种复合材料超材料，其中Mu-Near-Zero培养基被铁氧体板覆盖。我们验证该结构可以提高小面积的屏蔽效率。此外，我们通过将散装的铁氧体平板更改为图案板来优化磁路。这样，可以在大面积中实现明显的屏蔽有效性。实验结果表明，具有图案化铁氧体的复合材料超材料的最大屏蔽有效性（SE）为20.56 dB，比单个铁氧体平板的近近19 dB，其复合材料材料的厚度相同。复合超材料的结果在涉及磁屏蔽的应用中非常有用。
The magnetic shield plays an important role in magnetic near-field control. However, the requirements of efficient, ultrathin, lightweight and cheap are still the challenges. Here, we firstly propose a composite metamaterial in which the mu-near-zero media is covered with a ferrite slab. We verify that this structure can enhance the shielding effectiveness in a small area. Furthermore, we optimize the magnetic path by changing the bulk ferrite slab into a patterned slab. In this way, significant shielding effectiveness enhancement can be achieved in a large area. Experimental results show that the maximum shielding effectiveness (SE) of the composite metamaterial with a patterned ferrite is 20.56 dB, which is nearly 19 dB higher than that of a single ferrite slab with the same thickness of the composite metamaterial. The results on the composite metamaterial would be very useful in the applications involving magnetic shielding.
