Selective excitation of resonances in gammadion metamaterials for terahertz wave manipulation

作     者：WANG DaCheng HUANG Qin QIU ChengWei HONG MingHui 

作者机构：Department of Electrical and Computer Engineering National University of Singapore 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2015年第58卷第8期

页      面：43-48页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 

基　　金：supported by the National Research Foundation Prime Minister’s Office Singapore under its Competitive Research Program(Grant No.NRF-CRP10-2012-04) 

主　　题：terahertz gammadion metamaterials transmission 

摘      要：A gammadion terahertz(THz) metamaterial embedded with a pair of splits is experimentally investigated. By introducing the pair of splits at different arms, the transmitted amplitude at the resonance frequency can be manipulated from 61% to 24%. Broadband static resonance tunability from 1.11 to 1.51 THz is also demonstrated via varying the relative split positions at certain arms. The amplitude change and static resonance tunability are attributed to the introduced split pairs, which enable selective excitation of different resonance modes in the gammadion metamaterials. This work promises a new approach to design THz functional devices.