左手材料与负折射

Left-Handed Materials and Negative Refraction

左手材料和负折射是近几年来物理学家关注的热点问题之一。本文从理论构想和实验两个方面对左手材料做了详细的综述,围绕负折射频率从微波到近红外的研究进展这一主线,具体介绍了实现左手介质的方法。文中着重综述了两个方面的内容:一是左手介质最有应用前景的超透镜效应;二是与左手介质相关而又有所区别的光子晶体。本文还简要介绍了国内负折射材料的研究现状,提出了利用高分子功能材料实现负折射的两种可能的途径。

This paper focused on left-handed materials（LHM） both from theoretical point and experimental aspects. The methods to realize left-handed medium are reviewed, including combination of split ring resonators （SRRs） with thin metal wires, and those beyond SRRs. We concentrated on superlens effect, the most promising effect of LHM, and photonic crystals, which bear some analogy to LHM but distinguished from LHM. A brief introduction to domestic research of negative refracting materials is given, and two possible routes to negative refracting via functional polymeric materials are suggested.