论文标题
深度亚波长耦合双层独立式柔性超材料中的超高Terahertz指数
Ultra-high terahertz index in deep subwavelength coupled bi-layer free-standing flexible metamaterials
论文作者
论文摘要
我们通过利用独立的，薄膜金属 - 金属 - 金属 - 金属棋盘棋盘结构中的深层次波长耦合来报告人工设计的超材料的折射指数的广泛增强。在Terahertz频率上获得了创纪录的高折射率为77.02+43.22i。详细的研究表明，通过双层设计中的深层次波长耦合增强结构的有效折射率，这是由幂定律支配的，这是一种设计高指数超材料的有效，更简单的方法。该方法依赖于深度次波长耦合来获得极高的折射率值，这些折射率值可能导致在成像，光刻，延迟线和干涉仪的设计领域的许多实际应用。
We report extensive enhancement in the refractive index of artificially designed metamaterials by exploiting the deep subwavelength coupling in a free-standing, thin-film metal-dielectric-metal checkboard structure. A record high refractive index of 77.02+43.22i is obtained at terahertz frequencies. The detailed investigations reveal that the enhancement of the effective refractive index of the structure via deep subwavelength coupling in a bilayer design is governed by a power law, which is an effective and simpler approach to design high index metamaterial. The approach relies on deep subwavelength coupling to obtain extremely high refractive index values that can lead to many practical applications in the field of imaging, lithography, design of delay lines and interferometers.
