1] Institute of Micro &Nano Optics, Shenzhen University, Shenzhen, 518060, China [2] School of Electrical and Computer Engineering, RMIT University, Melbourne, Victoria 3001, Australia [3] School of Physics, University of Melbourne, VIC 3010, Australia.
Institute of Materials Research and Engineering, A*STAR, Singapore 117602, Singapore.
Sci Rep. 2015 May 21;5:10529. doi: 10.1038/srep10529.
Metasurfaces are promising two-dimensional metamaterials that are engineered to provide unique properties or functionalities absent in naturally occurring homogeneous surfaces. Here, we report a type of metasurface for tailored reconstruction of surface plasmon waves from light. The design is based on an array of slit antennas arranged in a way that it matches the complex field distribution of the desired surface plasmon wave. The approach is generic so that one can readily create more intricate designs that selectively generate different surface plasmon waves through simple variation of the wavelength or the polarization state of incident light. The ultra-thin metasurface demonstrated in this paper provides a versatile interface between the conventional free-space optics and a two-dimensional platform such as surface plasmonics.
超表面是一种有前途的二维超材料，经过工程设计可提供自然界中均匀表面所不具备的独特性质或功能。在这里，我们报告了一种用于从光中定制表面等离激元波重建的超表面。该设计基于以匹配所需表面等离激元波的复杂场分布方式排列的狭缝天线阵列。该方法是通用的，因此人们可以通过简单地改变入射光的波长或偏振态来轻松创建更复杂的设计，从而选择性地产生不同的表面等离激元波。本文演示的超薄超表面在传统的自由空间光学和二维平台（如表面等离激元学）之间提供了一个通用接口。
