Yang Wang, Xuefei Xuan, Lu Zhu, Jiabing Zhu, Xiaobo Shen, Yan Wu, Qiang Gao. Design of Multi-Layer Gear-Shaped Metamaterial Absorber with Broadband and High Absorption[J]. Acta Optica Sinica, 2021, 41(18): 1823001
- Acta Optica Sinica
- Vol. 41, Issue 18, 1823001 (2021)
Fig. 1. Structural diagrams of proposed absorber. (a) Structure of array; (b) array period; (c) structure of absorber unit; (d) gear-shaped structure
Fig. 2. Absorption spectra of multi-layer gear-shaped metamaterial absorber and average absorptivity versus layer number. (a) Absorption spectra; (b) average absorptivity versus layer number
Fig. 3. Absorption spectra of multi-layer gear-shaped metamaterial absorber under different conditions. (a) Different polarization angles; (b) different incident angles
Fig. 4. Relative impedances of different structures. (a) Proposed MGMA; (b) absorbers with different layer numbers
Fig. 5. Electric field |E| distributions at different resonance points. (a)(d) λ=500 nm; (b)(e) λ=2340 nm; (c)(f) λ=3600 nm
Fig. 6. Electric field |E| and magnetic field |H| distributions in y=0 plane at different resonance points. (a)(d) λ=500 nm; (b)(e) λ=2340 nm; (c)(f) λ=3600 nm
Fig. 7. Influences of Ro on absorption spectra and average absorptivity. (a) Absorption spectra; (b) average absorptivity
Fig. 8. Influences of p on absorption spectra and average absorptivity. (a) Absorption spectra; (b) average absorptivity
Fig. 9. Influences of S on absorption spectra and average absorptivity. (a) Absorption spectra; (b) average absorptivity
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Table 1. Structural parameters of multi-layer gear-shaped metamaterial absorber
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