DaCheng WANG, Qin HUANG, ChengWei QIU, MingHui HONG,
http://engine.scichina.com/publisher/scp/journal/SCPMA/58/8/10.1007/s11433-015-5674-7?slug=fulltext
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.
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