Jiang Li-Ying, Yi Ying-Ting, Yi Zao, Yang Hua, Li Zhi-You, Su Ju, Zhou Zi-Gang, Chen Xi-Fang, Yi You-Gen. A four-band perfect absorber based on high quality factor and high figure of merit of monolayer molybdenum disulfideJ. Acta Physica Sinica, 2021, 70(12): 128101. DOI: 10.7498/aps.70.20202163