Journal of Infrared and Millimeter Waves, Volume. 44, Issue 1, 122(2025)
Design and validation of RLC equivalent circuit model based on long-wave infrared metamaterial absorber
Fig. 1. MIM-MAs infrastructure and related performance:(a) Schematic of the proposed structure of MIM-MAs;(b) Optical parameters of AlN and Mo;(c) Design the schematic diagram of the absorption,reflectivity and transmittance curves of the MAs structure
Fig. 2. Mapping of electric and magnetic field distribution at MAs absorption peak:(a) x-y plane and(b) x-z plane electric field distribution;(c) x-y plane and(d) x-z plane magnetic field distribution;(e) x-y plane and(f) x-z plane power density distribution
Fig. 3. The proposed equivalent circuit model structure:(a) Schematic diagram of the RLC equivalent circuit model for MIM-MAs;(b) Real and imaginary parts of the relative impedance of the equivalent circuit model
Fig. 4. Comparison of RLC circuit model prediction results and FDTD simulation results: At p=3.6 µm,(a) resonant wavelength and(c) FWHM for different values of w are as follows; At w=2.6 µm,(b) resonant wavelength and(d) FWHM for different values of p are as follows
Fig. 5. Preparation by MIM-MAs process:(a) Process steps to fabrication MAs;(b) SEM image of the fabricated MAs;(c) Tested MAs absorption response(orange points) versus the absorption response predicted by the RLC equivalent circuit model(blue points)
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Ji-Cong ZHAO, Yan-Meng DANG, Hai-Yang HOU, Ye-Fan LIN, Hai-Yan SUN, Kun ZHANG. Design and validation of RLC equivalent circuit model based on long-wave infrared metamaterial absorber[J]. Journal of Infrared and Millimeter Waves, 2025, 44(1): 122
Category: Interdisciplinary Research on Infrared Science
Received: May. 4, 2024
Accepted: --
Published Online: Mar. 5, 2025
The Author Email: SUN Hai-Yan (sun.yan@ntu.edu.cn), ZHANG Kun (zhangkun@mail.sitp.ac.cn)