Broadband tunable liquid crystal terahertz waveplates driven with porous graphene electrodes

Lei Wang, Xiao Wen Lin, Wei Hu, Guang Hao Shao, Peng Chen, Lan Ju Liang, Biao Bing Jin, Pei Heng Wu, Hao Qian, Yi Nong Lu, Xiao Liang, Zhi Gang Zheng, Yan Qing Lu