Investigation of graphene-integrated tunable metamaterials in THz regime

被引:2
作者
Demir, S. Mahircan [1 ]
Yuksek, Yahya [1 ]
Sabah, Cumali [1 ,2 ]
机构
[1] Middle East Tech Univ, Dept Elect & Elect Engn, Northern Cyprus Campus METU NCC,TRNC Mersin 10, Kalkanli, Guzelyurt, Turkey
[2] Middle East Tech Univ, Kalkanli Technol Valley KALTEV, Northern Cyprus Campus METU NCC,TRNC Mersin 10, Kalkanli, Guzelyurt, Turkey
来源
PRAMANA-JOURNAL OF PHYSICS | 2018年 / 90卷 / 05期
关键词
Graphene-integrated metamaterials; fishnet; sensor applications; tunability; POLARIZATION; ABSORBER; BAND; RESONATORS; DESIGN; SENSOR; RING;
D O I
10.1007/s12043-018-1558-5
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A metallic fishnet metamaterial structure in sub-THz region is presented. The proposed structure is based on hexagonal resonators. Simulations have been performed by a 3D full-wave electromagnetic simulator and a negative refractive index has been observed at the frequency range between 0.55 and 0.70 THz with the help of the graphene layer. In order to observe the effect of the graphene layer, the metamaterial structure has been simulated and examined before and after graphene integration. Significant modification in the propagation properties has been observed after the graphene integration. Change in S-parameters with the size variation of hexagonal resonators and alteration in graphene thickness are also presented as a parametric study to show the tunability of the structure. Suitability of the metamaterial for sensor applications has been investigated. The proposed metamaterial structure is promising to be effectively used for tunability and sensor applications.
引用
收藏
页数:9
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