CAJ | 학술논문

利用碳纳米管在外加静电场下可产生常温太赫兹频段负微分电阻的特性,提出了太赫兹波频段的有源超材料设计方法以及块状有源超材料等效电磁特性参数提取方法.对无源金属线阵进行参数提取,证明所提出的块状有源超材料等效电磁特性参数提取方法,可以有效解决传统参数提取中的符号与多分支选择问题.通过对嵌入具有负微分电阻特性的碳纳米管的金属线阵进行参数提取,发现太赫兹波有源超材料不仅具有等效介电常数虚部为负(代表电有源)的特性,而且还具有磁性色散的特性.
이용탄납미관재외가정전장하가산생상온태혁자빈단부미분전조적특성,제출료태혁자파빈단적유원초재료설계방법이급괴상유원초재료등효전자특성삼수제취방법.대무원금속선진진행삼수제취,증명소제출적괴상유원초재료등효전자특성삼수제취방법,가이유효해결전통삼수제취중적부호여다분지선택문제.통과대감입구유부미분전조특성적탄납미관적금속선진진행삼수제취,발현태혁자파유원초재료불부구유등효개전상수허부위부(대표전유원)적특성,이차환구유자성색산적특성.
A strategy is presented to acquire active terahertz (THz) metamaterial by incorporating negative differential resistance carbon nanotubes. Furthermore, we propose a method of extracting active metamaterial effective parameters. This new method can effectively solve the problems of signs and multi-branches, while the traditional parameter extraction method becomes powerless for active case. Our results indicate that the active THz metamaterial with metal wires array not only has negative value of the imaginary part of the permittivity but also presents magnetic-dispersion characteristics.