Metamaterials in the Terahertz Regime
Metamaterials in the Terahertz Regime
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DOI：
10.1109/jphot.2009.2026288
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发表时间：
2009-01-01
影响因子：
2.4
通讯作者：
Abbott, Derek
中科院分区：
文献类型：
--
作者：
Withayachumnankul, Withawat;Abbott, Derek
超材料是一种人工合成材料，其电磁特性来自于嵌入的亚波长金属结构。理论上，超材料在任何频率下的有效电磁特性都可以被设计成任意值，包括那些自然界中没有出现的值。因此，这类新材料可以大大增加电磁波控制的自由度。幸运的是，超材料的出现与人们对太赫兹辐射（T射线）的强烈兴趣不谋而合，人们正在寻找有效的电磁操纵形式。考虑到自然界存在的能够控制太赫兹的材料的稀缺性，超材料成为理想的替代品，有望在太赫兹研究中取得进展。最终，太赫兹超材料将在许多领域带来科学和技术优势。本文介绍了超材料的基本原理，综述了太赫兹超材料从制备、表征到实现的最新研究动态。
Metamaterials are artificial composites that acquire their electromagnetic properties from embedded subwavelength metallic structures. In theory, the effective electromagnetic properties of metamaterials at any frequency can be engineered to take on arbitrary values, including those not appearing in nature. As a result, this new class of materials can dramatically add a degree of freedom to the control of electromagnetic waves. The emergence of metamaterials fortunately coincides with the intense emerging interest in terahertz radiation (T-rays), for which efficient forms of electromagnetic manipulation are sought. Considering the scarcity of naturally existing materials that can control terahertz, metamaterials become ideal substitutes that promise advances in terahertz research. Ultimately, terahertz metamaterials will lead to scientific and technological advantages in a number of areas. This article covers the principles of metamaterials and reviews the latest trends in terahertz metamaterial research from the fabrication and characterization to the implementation.