Mechanically tunable metamaterials terahertz dual-band bandstop filter
Hu Fangrong1, 3, †, Xu Xin1, Li Peng1, Xu Xinlong2, Wang Yue’e1
       

(color online) Schematic of the sample: (a) top view, (b) oblique view of a unit cell, and (c) micrograph of sample.