超材料耦合表面等离激元诱导的电磁波透明研究

项目名称： 超材料耦合表面等离激元诱导的电磁波透明研究

项目编号： No.11204378

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： 王甲富

作者单位： 中国人民解放军空军工程大学

项目金额： 30万元

中文摘要： 电磁波透明在能源、军事、通信等领域具有广阔的应用前景，针对微波频段电磁波透明的实现这一问题，提出了利用超材料对表面等离激元的高效耦合激发实现电磁波透明的思想。围绕这一主题，研究表面等离激元诱导的电磁波透明机理，阐明电磁波透明与表面等离激元耦合效率、传输特性等的关系；研究超材料表面等离激元耦合层的优化设计及性能调控，建立理论分析模型，得到结构单元参数、基板损耗特性、耦合层厚度等对耦合效率的影响；研究弯曲界面上表面等离激元的传播、辐射和损耗，得到其色散关系、传播长度、衰减系数和辐射系数，并研究不同表面等离激元模式之间的相互作用；最后基于超材料表面等离激元耦合层实现微波频段的电磁波透明，加工制作原理器件并进行测试，验证表面等离激元诱导的电磁波透明机理。本项目将为微波频段电磁波透明的实现开辟新途径，研究成果可望用于高性能滤波器、传感器、天线罩、隐身天线等新型微波器件的研发。

中文关键词： 表面等离激元；超材料；电磁波透明；超表面；纵向耦合

英文摘要： Electromagnetic wave transparency possesses great application prospectives in fields such as energy, military weapons and communications. Dealing with the realization of electromagnetic wave transparency at microwave frequencies, this project proposes the idea of realizing electromagnetic wave transparency using metamaterial-coupled surface plasmon polaritons. With this aim, the mechanism of electromagnetic wave transparency induced by metamaterial-coupled surface plasmon polaritons will be firstly investigated. Relations between electromagnetic wave transparency and coupling efficiency, transmission properties of surface plasmon polaritons will be deliberated. Secondly, optimized design and performance improvement of metamaterial coupling layer will be investigated as the key part of this project, with well-established theoretical model.The influences of the unit geometrical parameters, substrate loss and coupling layer thickness on the coupling efficiency of surface plasmon polaritons will be determined. Thirdly, we will investigate the propagation, radiation and losses of surface plasmon polaritons on curved interfaces and obtain the dispersion, propagation length, attenuation coefficient and radiation coefficient, plus in-depth studies on interactions between different surface plasmon polariton modes. Finall

英文关键词： surface plasmon polariton；metamaterial；electromagnetic transparency；metasurface；longitudinal coupling