微波/太赫兹电磁特异介质的实验研究

项目名称： 微波/太赫兹电磁特异介质的实验研究

项目编号： No.11204040

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 物理学I

项目作者： 何琼

作者单位： 复旦大学

项目金额： 30万元

中文摘要： 电磁特异介质（Metamaterials）是利用亚波长微结构单元构造的人工合成材料，它能实现自然界常规材料所不具备的奇异光学性质。对电磁特异介质的研究极大的拓宽了电磁波的传统理论，并且伴随着理论的发展，发现了一大批新奇的物理现象和实际应用。利用电磁特异介质来调控电磁波的传输特性成为的一大研究热点。申请人拟以实验研究为主，结合理论分析和数值模拟，研究电磁特异介质对微波和太赫兹波段电磁波传播特性的调控能力及潜在应用。为此我们将开展如下研究：1）根据理论设计和制备出真实的常规电磁体特异介质体系，实现对电磁（光）波诸多传输特性（如偏振、传播方向等）的更有效调控，特别是对太赫兹波的调控；2）利用具有梯度变化性质的电磁特异介质实现对电磁波传输特性的调控。3）利用分型结构等离特异介质具有的表面等离子体的局域增强效应实现微波乃至太赫兹波段的超透镜效应。

中文关键词： 电磁特异介质超表面；表面等离激元；石墨烯；太赫兹；电磁波调控

英文摘要： Metamaterials, artificial materials composed by subwavelength micro-structure, can exhibit extraordinary optical properties which cannot be found in nature material. The conventional theory of electromagnetic (EM) waves has been significantly extended through studying EM metamaterials, and lots of potential applications are proposed. Manipulation of EM wave's propagation properties have become one of the hot research topics. Applicant plan to study the manipulation capability of metamaterials, especially at microwave and Terahertz region, mainly based on experimental research integrating with theoretical analysis and numerical simulation. To reach this goal, we plan to conduct the following three parts of research: 1).Designs and realizations of traditional metamaterials to manipulate EM wave's propagation properties(such as polarization, direction of propagation), especially for Terahertz wave;2).Manipulation of EM wave with Gradient index meta-materials;3). Hyperlensing effect at microwave and terahertz region realized with fractal-shape metamaterials.

英文关键词： metasurface；surface plasmon polariton；graphene；Terahertz；EM wave manipulation