金属涂覆层的环境稳定性对双左手材料传输特性的影响

本项目以不同金属涂覆层的左手材料为研究对象，探索双左手特性左手材料的设计实现以及环境因素对不同导电涂层左手材料的影响规律。我们利用左手传输线等效电路模型原理，设计和调整单元结构，制定优化方案，得出传输性能良好的双左手材料结构。同时，由于左手材料在工作过程中不可避免的要接触高低温、湿热和盐雾腐蚀环境，我们将加工制备出不同金属涂覆层的双左手材料，对其进行多方面的环境模拟试验，分析环境对左手频带的涂层微观结构、左手带宽及中心频率大小的影响，进一步反馈双左手材料的设计和制备，目标是获取损耗低、器件小型化，且具有环境稳定性的双左手材料。本项目对左手材料环境稳定性的研究将为探索和开发双左手材料在宽带和多频带的工程应用提供重要的知识储备。

In this project, we will investigate the design of left-handed materials (LHM) with dual-left-handed properties and the influence of environmental factors on the left-handed characteristics for LHM with different metal coating. We will design and optimize the unit structure to obtain a left-handed material with good double-left-handed transmission performance using the theory of equivalent circuit model of the left-handed transmission line. Since the high-low temperature, humidity heat and salt spray corrosion are inevitably in real environment, the LHM structure with dual-left-handed properties will be fabricated with different metal coating and multi-aspects environment tests are carried out. The influence of environment on the coating microstructure, the left bandwidth and center frequency of left-handed band will be investigated, which will further feedback on the design and fabrication of LHM with double-left-handed properties. The project aims to obtain the LHM structures with low loss, device with miniaturization improvement and environment stability. The research on the environmental stability of LHM will also supply important knowledge resource for the exploration and development of double-left-handed LHM in broadband and multi-band applications.