本文研究垂直入射条件下水平极化和垂直极化时金属开口谐振环(split ring resonator,SRR)的电磁响应行为.通过分析这两种情况下的透射系数、介电常数和磁导率,发现垂直极化时,SRR可以产生电谐振实现负介电常数,其频段远高于磁谐振频段;...本文研究垂直入射条件下水平极化和垂直极化时金属开口谐振环(split ring resonator,SRR)的电磁响应行为.通过分析这两种情况下的透射系数、介电常数和磁导率,发现垂直极化时,SRR可以产生电谐振实现负介电常数,其频段远高于磁谐振频段;水平极化时,SRR只能产生磁谐振实现负磁导率,其频段与水平入射时的SRR的磁谐振频段相对应.通过仿真对此进行了证明,并对产生电谐振和磁谐振的原因进行了分析.展开更多
We propose a novel metamaterial structure operating at the terahertz band. This structure is assembled by a split ring resonator (SRR) with a metal mesh within a unit cell. Our experimental studies on the composite st...We propose a novel metamaterial structure operating at the terahertz band. This structure is assembled by a split ring resonator (SRR) with a metal mesh within a unit cell. Our experimental studies on the composite structure indicate that the coupling of the SRR and metal mesh significantly contribute to the transparency at the terahertz range. Moreover, we experimentally demonstrated the verity of transmission peak of this structure by changing the relative positions of the SRR and the metal mesh. The simulated electric field redistributions support the dependence between position of the two components and the transmission response. This study is the first to report a hybrid metamaterial structure consisting of an SRR array and a metal mesh within a unit cell. The designed process and resonance characteristics of this composite structure make it an excellent candidate for developing tunable terahertz components via integration with the MEMS (Micro Electronic Mechanical System) technology.展开更多
文摘本文研究垂直入射条件下水平极化和垂直极化时金属开口谐振环(split ring resonator,SRR)的电磁响应行为.通过分析这两种情况下的透射系数、介电常数和磁导率,发现垂直极化时,SRR可以产生电谐振实现负介电常数,其频段远高于磁谐振频段;水平极化时,SRR只能产生磁谐振实现负磁导率,其频段与水平入射时的SRR的磁谐振频段相对应.通过仿真对此进行了证明,并对产生电谐振和磁谐振的原因进行了分析.
基金supported by the Program of "One Hundred Talented People" of the Chinese Academy of Sciences and the Organization Department of Sichuanthe National Natural Science Foundation of China (Grant No.11176033)the Natural Science Foundation of Beijing (Grant No.4102016)
文摘We propose a novel metamaterial structure operating at the terahertz band. This structure is assembled by a split ring resonator (SRR) with a metal mesh within a unit cell. Our experimental studies on the composite structure indicate that the coupling of the SRR and metal mesh significantly contribute to the transparency at the terahertz range. Moreover, we experimentally demonstrated the verity of transmission peak of this structure by changing the relative positions of the SRR and the metal mesh. The simulated electric field redistributions support the dependence between position of the two components and the transmission response. This study is the first to report a hybrid metamaterial structure consisting of an SRR array and a metal mesh within a unit cell. The designed process and resonance characteristics of this composite structure make it an excellent candidate for developing tunable terahertz components via integration with the MEMS (Micro Electronic Mechanical System) technology.
