优化超级透镜：操纵几何结构以提高分辨率
Optimizing the Superlens: manipulating geometry to enhance the resolution
摘要：
我们分析了一个平面透镜的性能的基础上现实的负折射率材料在广义几何。我们证明了传统的超透镜设计（其中透镜是在物体和图像之间的中心）是不是最佳的分辨率的观点，开发一个解析表达式的分辨率限制的广义透镜，用它来找到最佳的透镜配置，并计算最大吸收实际近场超透镜可能有。我们证明，在传统的超透镜图片相比，平面成像通常伴随着激发表面波在两个界面的透镜。
英文摘要：
We analyze the performance of a planar lens based on realistic negative index material in a generalized geometry. We demonstrate that the conventional superlens design (where the lens is centered between the object and the image) is not optimal from the resolution point-of-view, develop an analytical expression for the resolution limit of a generalized lens, use it to find the optimum lens configuration, and calculate the maximum absorption practical nearfield superlenses may have. We demonstrate that in contrast to the conventional superlens picture, planar imaging is typically accompanied by excitation of surface waves at both interfaces of the lens.
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