Dual Imaging Metamaterial Composed of Periodic Bi-Fold Transformation Media Made of 3-D Printed TiO<sub>2</sub> Nanoparticles Mixed Resin
Dual Imaging Metamaterial Composed of Periodic Bi-Fold Transformation Media Made of 3-D Printed TiO<sub>2</sub> Nanoparticles Mixed Resin
复制标题
由 3D 打印 TiO<sub>2</sub> 纳米颗粒混合树脂制成的周期性双折转变介质组成的双成像超材料
DOI：
10.1109/tmtt.2021.3087711
复制
发表时间：
2021
影响因子：
4.3
通讯作者：
Sanada Atsushi
中科院分区：
文献类型：
--
作者：
Takano Yuma;Sanada Atsushi
研究了由3d打印tio2纳米颗粒混合树脂制成的由周期性双重转换介质组成的双成像超材料的宽带运行。考虑了空间不连续边界（sbs）上的特殊折射和双重变换介质中随坐标变换而发生的折射，并基于射线追踪法导出了双重成像条件。设计了以±30°入射角工作的双成像超材料，并通过射线追踪法和等效电路模拟对其工作进行了数值模拟。实验得到的介电常数为3.2，质量分数为0.075的tio2混合树脂实现了双重相变介质。近场测量结果也证实了所制备的超材料的有效性。能量透过率与模拟结果吻合较好。通过能量透射率评估的带宽显示宽带工作范围为30 ~ 40 GHz。
Broadband operation of a dual imaging metamaterial composed of periodic bi-fold transformation media made of 3-D printed TiO2nanoparticles mixed resin is demonstrated. Peculiar refractions on the spatially discontinuous boundaries (SDBs) and refractions along with the coordinate transformations in the bi-fold transformation media are taken into account and the dual imaging conditions are derived based on the ray-tracing method. The dual imaging metamaterial operating with the incident angles of ±30° is designed and its operation is numerically demonstrated by the ray-tracing method and the equivalent circuit simulations. The bi-fold transformation media are implemented by the TiO2mixed resin with the experimentally obtained permittivity of 3.2 with a mass fraction of 0.075. The operation of the fabricated metamaterial is also confirmed by the near-field measurements. The energy transmittances well correspond to those of the simulated results. The bandwidth evaluated by the energy transmittances shows broadband operation as wide as from 30 to 40 GHz.