Vertical split-ring resonator based anomalous beam steering with high extinction ratio

Wei Lun Hsu, Pin Chieh Wu, Jia Wern Chen, Ting Yu Chen, Bo Han Cheng, Wei Ting Chen, Yao Wei Huang, Chun Yen Liao, Greg Sun, Din Ping Tsai

研究成果: Article同行評審

38 引文 斯高帕斯(Scopus)

摘要

Metasurfaces created artificially with metal nanostructures that are patterned on surfaces of different media have shown to possess "unusual" abilities to manipulate light. Limited by nanofabrication difficulties, so far most reported works have been based on 2D metal structures. We have recently developed an advanced e-beam process that allowed for the deposition of 3D nanostructures, namely vertical split-ring resonators (VSRRs), which opens up another degree of freedom in the metasurface design. Here we explore the functionality of beam steering with phase modulation by tuning only the vertical dimension of the VSRRs and show that anomalous steering reflection of a wide range of angles can be accomplished with high extinction ratio using the finite-difference-time-domain simulation. We also demonstrate that metasurfaces made of 3D VSRRs can be made with roughly half of the footprint compared to that of 2D nano-rods, enabling high density integration of metal nanostructures.

原文English
文章編號11226
期刊Scientific reports
5
DOIs
出版狀態Published - 2015 六月 8

All Science Journal Classification (ASJC) codes

  • 多學科

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