Rahman Md Atiqur, Islam Mohammad Tariqul, Singh Mandeep Singh Jit, Samsuzzaman Md, Chowdhury Muhammad E H
Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia.
Department of Computer and Communication Engineering, Faculty of Computer Science and Engineering, Patuakhali Science and Technology University, Dhaka, Bangladesh.
Sci Rep. 2021 Apr 7;11(1):7654. doi: 10.1038/s41598-021-87100-6.
In this article, we propose SNG (single negative) metamaterial fabricated on Mg-Zn ferrite-based flexible microwave composites. Firstly, the flexible composites are synthesized by the sol-gel method having four different molecular compositions of MgZnFeO which are denoted as Mg, Mg Mg and Mg. The structural, morphological, and microwave properties of the synthesized flexible composites are analyzed using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and conventional dielectric assessment kit (DAK) to justify their possible application as dielectric substrate at microwave frequency regime. Thus the average grain size is found from 20 to 24 nm, and the dielectric constants are 6.01, 5.10, 4.19, and 3.28, as well as loss tangents, are 0.002, 0.004, 0.006, and 0.008 for the prepared Mg-Zn ferrites, i.e., Mg Mg Mg and Mg respectively. Besides, the prepared low-cost Mg-Zn ferrite composites exhibit high flexibility and lightweight, which makes them a potential candidate as a metamaterial substrate. Furthermore, a single negative (SNG) metamaterial unit cell is fabricated on the prepared, flexible microwave composites, and their essential electromagnetic behaviors are observed. Very good effective medium ratios (EMR) vales are obtained from 14.65 to 18.47, which ensure the compactness of the fabricated prototypes with a physical dimension of 8 × 6.5 mm Also, the proposed materials have shown better performances comparing with conventional FR4 and RO4533 materials, and they have covered S-, C-, X-, Ku-, and K-band of microwave frequency region. Thus, the prepared, flexible SNG metamaterials on MgZnFeO composites are suitable for microwave and flexible technologies.
在本文中，我们提出了一种基于镁锌铁氧体的柔性微波复合材料上制备的单负（SNG）超材料。首先，通过溶胶-凝胶法合成具有四种不同分子组成的MgZnFeO柔性复合材料，分别记为Mg、Mg Mg和Mg。使用X射线衍射（XRD）、场发射扫描电子显微镜（FESEM）和传统介电评估套件（DAK）分析合成的柔性复合材料的结构、形态和微波性能，以证明它们在微波频率范围内作为介电基板的潜在应用。因此，所制备的镁锌铁氧体，即Mg、Mg Mg、Mg和Mg的平均晶粒尺寸为20至24nm，介电常数分别为6.01、5.10、4.19和3.28，损耗角正切分别为0.002、0.004、0.006和0.008。此外，所制备的低成本镁锌铁氧体复合材料具有高柔韧性和轻质特性，这使其成为超材料基板的潜在候选材料。此外，在制备的柔性微波复合材料上制作了一个单负（SNG）超材料单元胞，并观察了其基本电磁行为。获得了从14.65到18.47的非常好的有效介质比（EMR）值，这确保了物理尺寸为8×6.5mm的制作原型的紧凑性。此外，与传统的FR4和RO4533材料相比，所提出的材料表现出更好的性能，并且它们覆盖了微波频率区域的S、C、X、Ku和K波段。因此，在MgZnFeO复合材料上制备的柔性SNG超材料适用于微波和柔性技术。
