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

Surface currents distributed on the top patterned aluminum film for three absorption frequencies: (a) f = 0.38 THz, (b) f = 0.7 THz, and (c) f = 0.96 THz.