We concentrated on superlens effect,the most promising effect of LHM,and photonic crystals,which bear some analogy to LHM but distinguished from LHM.

• 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。