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Decisive role of the dielectric spacer on metamaterial hybridization

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In our recent work, we have theoretically shown that a broad negative permeability band can be achieved by introducing hybridized meta-materials [N. T. Tung et al., Appl. Phys. Express 5, 112001 (2012)]. To step forward an experimental realization of the above proposal, evaluating the loss contribution at resonant frequencies is indispensable. In this report, we study the metallic and dielectric losses that directly influence the strength of permeability negativity at microwave regime. The results show that the dielectric loss plays a decisive role in forming the meta-material hybridization. | Decisive role of the dielectric spacer on metamaterial hybridization Vật lý DECISIVE ROLE OF THE DIELECTRIC SPACER ON METAMATERIAL HYBRIDIZATION PHAN THI DUYEN*, NGO DUC VIET*, NGUYEN THI HIEN**, NGUYEN THANH TUNG****, VU DINH LAM* Abstract: Since the first observation of the fascinating negative refractive-index property, meta-materials have been in the scientific spotlight. A typical interest has been paid for negative refractive meta-materials with a broad operating band, which are more useful for applications. In our recent work, we have theoretically shown that a broad negative permeability band can be achieved by introducing hybridized meta-materials [N. T. Tung et al., Appl. Phys. Express 5, 112001 (2012)]. To step forward an experimental realization of the above proposal, evaluating the loss contribution at resonant frequencies is indispensable. In this report, we study the metallic and dielectric losses that directly influence the strength of permeability negativity at microwave regime. The results show that the dielectric loss plays a decisive role in forming the meta-material hybridization. Keywords: Meta-materials, Hybridization, Dielectric loss. 1. INTRODUCTION Recent development of science and technology investigates new materials with novel properties, which have large potential applications in science and engineering to replace conventional ones. In the last decade, meta-materials emerged as a completely new class of materials, attracted great attention of the scientific community by fascinating properties [1]. Meta-material is known to be a kind of artificial materials with sub-wavelength scaled unit cell. These unit cells function as the atoms in the material. A meta-material “atom” is generally composed of two main components: electric component creating negative permeability εNghiên cứu khoa học công nghệ introducing a strong plasmonic hybridization. In this report, we evaluate the .