论文标题

用任意培养基构建双曲线超材料

Constructing Hyperbolic Metamaterials with Arbitrary Medium

论文作者

Yin, Li-Zheng, Han, Feng-Yuan, Zhao, Jin, Wang, Di, Huang, Tie-Jun, Liu, Pu-Kun

论文摘要

双曲线材料的最新进展刺激了操纵光传播领域的许多突破。但是,异常的电磁特性也对其组成材料提出了极高的需求。受天然材料的有限相对介电常数的限制,构造的双曲线材料的有效介电常数也仅限于狭窄范围。在这里,基于提出的结构诱导的欺骗表面等离子体的概念,我们证明可以选择任意材料来构建具有独立相对有效介电常数的独立的超质材料。此外,相对有效介电常数组件的理论可实现范围是无限的。作为该方法的证明,设计了三个新型的双曲线材料,其功能通过指定的方向传播在数值和实验上验证。为了进一步说明该方法的优势,提出并证明了一个全金属低损坏的超叠层超材料的超材料。提出的方法有效地减少了双曲线超材料的设计需求,并为需要大量介电常数的情况提供了新的想法,例如微波炉和Terahertz Focus,Super-Soluction Imaging,Electromagnetic Cloaking,等等。

Recent advances in hyperbolic metamaterials have spurred many breakthroughs in the field of manipulating light propagation. However, the unusual electromagnetic properties also put extremely high demands on its compositional materials. Limited by the finite relative permittivity of the natural materials, the effective permittivity of the constructed hyperbolic metamaterials is also confined to a narrow range. Here, based on the proposed concept of structure-induced spoof surface plasmon, we prove that arbitrary materials can be selected to construct the hyperbolic metamaterials with independent relative effective permittivity components. Besides, the theoretical achievable ranges of the relative effective permittivity components are unlimited. As proofs of the method, three novel hyperbolic metamaterials are designed with their functionalities validated numerically and experimentally by specified directional propagation. To further illustrate the superiority of the method, an all-metal low-loss hyperbolic metamaterial filled with air is proposed and demonstrated. The proposed methodology effectively reduces the design requirement for hyperbolic metamaterials and provides new ideas for the scenarios where large permittivity coverage is needed such as microwave and terahertz focus, super-resolution imaging, electromagnetic cloaking, and so on.

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