%0 Journal Article %T Tunable Extraordinary Optical Transmission in a Metal Film Perforated with Two-Level Subwavelength Cylindrical Holes %A Zhang, Xiangnan %A Liu, Guiqiang %A Hu, Ying %A Liu, Zhengqi %A Chen, Yuanhao %A Cai, Zhengjie %A Liu, Xiaoshan %A Gu, Gang %A Fu, Guolan %J Plasmonics %V 9 %N 5 %P 1149-1153 %@ 1557-1955 %D 2014-05-27 %I Springer US %~ DeepDyve