Li Lei, Zhou Qing-Li, Shi Yu-Lei, Zhao Dong-Mei, Zhang Cun-Lin, Zhao Kun, Tian Lu, Zhao Hui, Bao Ri-Ma, Zhao Song-Qing. The influence of different opening shapes of split-ring resonator on its transmittance in terahertz bandJ. Acta Physica Sinica, 2011, 60(1): 019503. DOI: 10.7498/aps.60.019503