超构材料是当前光学领域的热点话题。通过破缺构造基元的结构对称性，超构材料将可拥有额外的光学禁带，为激发新颖的光学边界态和非对称电磁响应提供了思路。本项目立足于超构材料中的基元非对称性质，特别针对其微观模型与宏观色散、禁带特性和场量调控应用等展开基础性机理研究，包括：通过研究非对称基元的传输线模型，建立和完善该类超构材料的非对称电磁机制和系统的禁带体系描述；研究非对称基元超构材料体块的光学表面态，分析其激励条件和传播特性，获得新颖的电磁波、光波片上调控方案；基于非对称体系超构材料及其禁带特性，运用超薄材料操控电磁点源辐射，以及实现高效的单向吸波体。本项目意在丰富超构材料的内容，填补非对称基元超构材料方面研究的不足，有效推动和促进其潜在的应用。

The metamaterial is one of the hot topics in optics. Through breaking the structural symmetry of the constructing inclusions, extra forbidden band can be observed in the interesting metamaterials, which provides the possibility to stimulate novel edge states and asymmetric electromagnetic responses. This proposal focus on the topics of microscopic modeling, macroscopic dispersion, forbidden characteristics and the applications of field manipulation, of metamaterials made of asymmetric structures. The contents of this proposal include: (a) through studying an equivalent transmission-line model, we are trying to exhibit the asymmetric mechanism and to establish the systematic description of cutting-off, of the asymmetrically structured metamaterials; (b) through studying the surface states of the bulk metamaterials, we expect to find out the excitation conditions and the propagating profiles, in order to obtain some novel approaches of on-chip wave control in the microwave and optical ranges;(c) according to the forbidden dispersion of the asymmetric metamaterials, we intend to achieve the flexible control of point source’s radiation, as well as directionally efficient absorption, with ultra-thin metamaterial structures. With the researches proposed, we expect to give solutions to the emergent problems currently existing and enrich the content of metamaterials, as well as to facilitate the potential applications of metamaterials which are asymmetrically constructed.