"Switching terahertz waves with gate-controlled active graphene metamaterials"
Seung Hoon Lee, Muhan Choi, Teun-Teun Kim, Seungwoo Lee, Ming Liu, Xiaobo Yin, Hong Kyw Choi, Seung S. Lee, Choon-Gi Choi, Sung-Yool Choi, Xiang Zhang, and Bumki Min, Metamaterials, 2012,