螺旋环超材料太赫兹吸波器的响应原理及特性

发布时间：2018-04-14 00:01

本文选题：螺旋环超材料 + 太赫兹吸波器　；参考：《红外与毫米波学报》2017年03期

【摘要】：提出一种表层电磁谐振器呈螺旋环的超材料太赫兹吸波器.与常规的超材料吸波器不同,在材料的种类及厚度都不变的情况下,仅通过改变表面螺旋环的环数或环的起始和终止位置,就能有效地调节螺旋环超材料的太赫兹响应性能.研究发现,该超材料的响应频率的仿真值与驻波理论计算值基本吻合,说明螺旋环超材料的响应机理可以通过驻波理论解释、其响应频率具有可预计性.为了探究螺旋环超材料的响应机理,还比较研究了闭合圆环及开口圆环超材料吸波器的性能.结果表明,螺旋环、闭合圆环、开口圆环三种超材料吸波器具有部分类似的太赫兹响应性能.但是,与另外两种超材料不同,螺旋环超材料的表层电磁谐振器是半径连续变化的螺旋环、具有更强的耦合作用以及更加简便和灵活的性能调节方式.研究成果对超材料的理论及设计研究有新的启示.
[Abstract]:A supermaterial terahertz absorber with helical ring for surface electromagnetic resonator is proposed.Unlike conventional metamaterial absorbers, the terahertz response of helical rings can be effectively adjusted by changing the number of rings on the surface or the starting and terminating positions of the rings under the condition of constant material types and thickness.It is found that the simulation value of the response frequency of the supermaterial is basically consistent with the calculated value of the standing wave theory, which indicates that the response mechanism of the helical ring supermaterial can be explained by standing wave theory, and its response frequency is predictable.In order to investigate the response mechanism of helical ring supermaterial, the performances of closed ring and open ring supermaterial absorber are compared.The results show that three kinds of metamaterial absorbers, such as helical ring, closed ring and open ring, have some similar terahertz response performance.However, unlike the other two kinds of supermaterials, the surface layer electromagnetic resonator of the helical ring supermaterial is a helical ring with continuously varying radius, which has a stronger coupling effect and a more convenient and flexible performance adjustment method.The research results have new implications for the theoretical and design research of metamaterials.
【作者单位】：电子科技大学光电信息学院电子薄膜与集成器件国家重点实验室;
【基金】：国家自然科学基金(61377063,61071032,61235006,61421002)~~
【分类号】：O441.4;TB34

【相似文献】