A tunable dual-band terahertz hybrid metamaterial absorber based on vanadium oxide (VO2) phase transition Ping Yu, Zhi-Wen Li, Rui Yao, Yu-Fei Xu, Xiao-Hong Cheng and Zi-Qiang Cheng Eur. Phys. J. D, 74 1 (2020) 5 Published online: 09 January 2020 DOI: 10.1140/epjd/e2019-100401-x