With the development and maturity of nanofabrication technology, many nanostructures with specific electromagnetic characteristics and optical functions have been designed and demonstrated. Artificial materials with these special optical properties are known as metamaterials. In this paper, a metamaterial lens is proposed and characterized. After using the space transformation approach based on the coordinate transformation principles, the lens becomes anisotropic and inhomogeneous, thus realizing the regulation of electromagnetic waves. The electromagnetic wave transformation characteristics of the superlens are numerically analysed by irradiating a plane transverse wave with a wavelength of 300 nm onto a rectangular slab. The results show that the waveform of the incident light changes from plane waves to cylindrical after passing through the superlens. The validity of the superlens is verified by finite element method calculations.

中文翻译：

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基于坐标变换的等离子体透镜

随着纳米制造技术的发展和成熟，许多具有特定电磁特性和光学功能的纳米结构已经被设计和展示。具有这些特殊光学特性的人造材料被称为超材料。在本文中，提出并表征了一种超材料透镜。采用基于坐标变换原理的空间变换方法后，透镜变得各向异性、不均匀，从而实现对电磁波的调节。通过将波长为 300 nm 的平面横波照射到矩形板上，对超透镜的电磁波变换特性进行了数值分析。结果表明，入射光通过超透镜后波形由平面波变为柱面波。通过有限元方法计算验证了超级透镜的有效性。