목록 Switching terahertz waves with gate-controlled active graphene metamaterials Author 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 Journal Metamaterials, 2012 Year 2009~2019