摘要
This paper presents a new electromagnetic functional material developed byelectron-less nickel deposition technique, with a single hollow micro-sphere as the core templateand a thin nickel layer as the shell. The micrograph taken by a scanning electron microscope showsthe microstructures of the materials in detail. Scattering parameters of the waveguide sample holderfilled with the materials have been obtained over X band. The electromagnetic parameters computedfrom the measured S parameters show that the material with metallic hollow spheres has as highrelative permeability μ'_r as 19.0 with about 0.6 magnetic loss tangent over the whole bandwidth.Compared to the material with non-metallic spheres, the permeability μ'_r and the magnetic losstangent μ'_r increase greatly, while the permittivity remains lower than 1.8.
介绍了一种新型电磁功能材料.该材料由表面无电子镀镍的空心微球组成.采用扫瞄电镜观测了镀镍前后的表面微观结构,制备成样品放入X波段波导框中,在微波网络分析仪上进行散射参数测量,计算了电磁特性参数.结果表明,该材料在表面镀镍后取得了较高的磁导率(19.0)和磁损耗正切(0.6),而介电常数保持较低(1.8).与非金属化微球材料相比,可作为超薄型多层微波吸收材料的基本材料.
