%0 Journal Article
%T Extraction of effective constitutive parameters of active terahertz metamaterial with negative differential resistance carbon nanotubes<br>基于负微分电阻碳纳米管的太赫兹波有源超材料特性参数提取
%A Si Li-Ming
%A Hou Ji-Xuan
%A Liu Yong
%A L&#
%A Xin
%A <br>司黎明
%A 侯吉旋
%A 刘埇
%A 吕昕
%J 物理学报
%D 2013
%I 
%X 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.
%K active metamaterial
%K terahertz wave
%K parameter extraction
%K carbon nanotubes<br>有源超材料
%K 太赫兹波
%K 参数提取
%K 碳纳米管
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=96293AEB9294B34D961E821589C75980&yid=FF7AA908D58E97FA&iid=38B194292C032A66&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=0