Yanhong Liu, Mina Ren, Lijuan Dong, Xiaoqiang Su, Yunlong Shi. Novel Electromagnetic Propagation in Hyperbolic Metamaterials with Flat Iso-Frequency Planes[J]. Acta Optica Sinica, 2022, 42(2): 0216001
- Acta Optica Sinica
- Vol. 42, Issue 2, 0216001 (2022)
Fig. 1. Diagrams of material structures. (a) Schematic diagram of transmission line of normal material and hyperbolic metamaterial; (b) schematic diagram of unit cell of transmission line hyperbolic metamaterial; (c) illustration of unit structure lumped element loading
Fig. 2. Wave vector dispersion diagrams. (a) Diagram of isofrequency line shape; (b) analysis of electromagnetic wave propagation based on isofrequency line shape
Fig. 3. Simulated electric field distributions for different incident angles for frequency of 0.95 GHz. (a) 0°; (b) 15°; (c) 30°; (d) 45°; (e) 60°; (f) 75°
Fig. 4. Physical photo of experimental sample (wedge is normal material and rectangle is hyperbolic metamaterial)
Fig. 5. Simulated and experimental electric field distributions when incident angle is 15°. (a)(c) Frequnecy is 0.95 GHz;(b)(d) frequnecy is 1.86 GHz
Fig. 6. Sample diagram and field distributions. (a) Schematic diagram of experimental sample structure; (b) physical picture of experimental sample; (c) simulated electric field pattern |E0| at 1.5 GHz; (d) experimentlly measured voltage magnitude distribution |U|
Fig. 7. Normalized power curves at frequencies of 0.95 GHz and 1.5 GHz
Fig. 8. Electric field patterns simulated by two point-sources with intervals of 2 cm and 4 cm when frequency is 0.95 GHz. (a) Interval is 2 cm; (b) interval is 4 cm
Fig. 9. Power distribution simulated by two point sources with interval of 2 cm when frequency is 0.95 GHz
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