Center for Ion Beam Applications (CIBA), Department of Physics, National University of Singapore, 2 Science Drive 3, 117542, Singapore.
Karlsruhe Institute of Technology (KIT), Network of Excellent Retired Scientists (NES) and Institute of Microstructure Technology (IMT), Postfach 3640, 76021 Karlsruhe, Germany.
Sci Rep. 2013 Dec 18;3:3531. doi: 10.1038/srep03531.
In this paper, we present the first experimental demonstration of double- and triple-band negative refraction index meta-foils in the terahertz (THz) region. Multi-band meta-foils constructed by multi-cell S-string resonators in a single structure exhibit simultaneously negative permittivity and negative permeability responses at multiple frequencies. The phenomena are confirmed by numerical simulations and Fourier transform infrared spectroscopy measurements. The flexible, freestanding multi-band meta-foils provide a promising candidate for the development of multi-frequency THz materials and devices.
在本文中，我们首次在太赫兹（THz）区域展示了双频和三频负折射指数超材料薄膜的实验演示。由单个结构中的多单元 S 型谐振器构成的多频带超材料薄膜在多个频率处同时表现出负介电常数和负磁导率响应。这些现象通过数值模拟和傅里叶变换红外光谱测量得到了证实。这种灵活的、独立式的多频带超材料薄膜为开发多频太赫兹材料和器件提供了有前景的候选方案。
