Electrically triggered dual-band tunable terahertz metamaterial band-pass filter based on Si3N4–VO2

Electrically triggered dual-band tunable terahertz metamaterial band-pass filter based on Si₃N₄–VO₂–Si₃N₄ sandwich

Zhao Shuai¹, Hu Fangrong^{1, †}, Xu Xinlong², Jiang Mingzhu¹, Zhang Wentao¹, Yin Shan¹, Jiang Wenying¹

Schematic diagrams of the device. (a) Oblique view of a unit cell, (b) top view of a unit cell, and (c) microscopy image of the sample.