异质微纳超材料结构的优化设计及Fano共振和等离子诱导透明特性的机理研究

项目名称： 异质微纳超材料结构的优化设计及Fano共振和等离子诱导透明特性的机理研究

项目编号： No.61275174

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 李宏建

作者单位： 中南大学

项目金额： 76万元

中文摘要： 表面等离子亚波长光学的研究已渗透到诸多领域，超材料就是目前一个新奇和热门的研究领域，不仅是其背后丰富的物理机理，更重要的是在光学和光电子学领域蕴藏着巨大应用价值。本研究针对异质金属微纳超材料结构中出现的Fano共振和等离子诱导透明及相关特性展开理论与实验研究。基于FDTD数值模拟与实验方法对异质微纳超材料结构进行优化设计，分析结构参数对Fano共振、等离子诱导透明及相关特性的调制作用，以及异质超材料结构在对称耦合或对称性破缺条件下对等离子诱导透明特性的影响，探讨Fano共振和等离子诱导透明的形成与变化机制，揭示其内在的物理规律。重点围绕：1) 有限长度共轴或非共轴纳米管及其组合结构；2) 异质分裂环及其组合结构；3) 新型金属/介质微纳异质组合结构。本研究的科学意义在于通过对异质微纳超材料结构的优化设计，探讨在光开关、慢光及传感器领域中的应用，为设计微纳光电子材料与器件提供指导。

中文关键词： 微纳结构；优化设计；Fano共振；等离子诱导透明；传感特性

英文摘要： Surface plasmon sub-wavelength optics has penetrated into many fields. Nowadays, metamaterials has been an interesting research area due to their unusual electromagnetic properties, not only for the rich physical mechanisms, what's more for their potential applications in optics and optoelectronics. This project demonstrates metamaterial structures based on hetero- micro/nanomaterials and its Fano resonance, plasmon induced transparency (PIT) and other related phenomena will be studied theoretically and experimentally. We will design quality tunable hetero- micro/nanometamaterial structures by using the finite difference time domain (FDTD) and experimental methods, analyse the modulation of structural parameters on the Fano resonance, PIT and related phenomena, discuss the effect of symmetric coupled and symmetry breaking on the characteristics of PIT, and explore the formation and evolution mechanisms of the Fano resonance and PIT. Our purpose is to reveal the physical mechanism behind the phenomena. The main contents of this project are listed as follows: The study of Fano resonance and PIT 1) in finite length coaxial or non-coaxial nanotubes and their composite structures; 2) in the heterostructure split rings and their composite structures; 3) in new metal / dielectric micro-nano composite heterostructures

英文关键词： Micro-nano structure；Optimal design；Fano resonance；Plasmon induced transparency；Sensing