A paper on the active THz metamterials that can be controlled by dual-optical/electrical modulation has been published in Applied Physics Express.

Photoconductor-metadevices: an enabling platform for dual-optical/electrical modulation of terahertz waves
Lingqiang Meng, Yelong Lu, Xin Sha, Yu Zhang, Wenquan Liu, Lei Kang, Kuniaki Konishi, Douglas H. Werner and Jia Li
Appled Physics Express 15, 092007 (2022)