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Wang Y, Li X, Wu S, Hu C, Liu Y. Design of metamaterial perfect absorbers in the long-wave infrared region. Phys Chem Chem Phys 2023; 26:551-557. [PMID: 38086645 DOI: 10.1039/d3cp05333d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
We designed a narrow-band metamaterial absorber (NMA) and an ultra-broadband metamaterial perfect absorber (UMPA) based on the impedance matching theory. The narrow-band metamaterial absorber mainly consists of Si3N4 cylinders with Si3N4 and Ti substrates. Numerical analysis shows that the absorption peak of the NMA is about 99.9% and the absorption bandwidth with more than 90% absorption is about 4.8 μm (9.5-14.3 μm). To further extend the absorption bandwidth, an ultra-broadband absorber was designed by integrating a Ti hyperbolic rectangle into the Si3N4 cylinder of the NMA. Numerical analysis shows that the absorption bandwidth of the UMPA is up to 10 μm (7-17 μm) with an average absorption rate of 96.6%. The designed UMPA has polarization insensitive properties with wide-angle absorption characteristics, and the average absorption can reach 85% and 76% in transverse magnetic (TM) and transverse electric (TE) modes, respectively, at 60° oblique incidence. The high absorption and wide band are mainly dominated by localized surface plasmon resonance, Fabry-Perot resonance and inter-resonance interactions. The designed absorber achieves excellent absorption in the long infrared wavelength band, which has potential applications in energy absorption, infrared sensing and other fields.
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Affiliation(s)
- Yang Wang
- School of Electronic Engineering, Huainan Normal University, Huainan 232000, China
| | - Xiu Li
- School of Economics and Management, Huainan Normal University, Huainan 232000, China
| | - Shenbing Wu
- School of Electronic Engineering, Huainan Normal University, Huainan 232000, China
| | - Changjun Hu
- School of Electronic Engineering, Huainan Normal University, Huainan 232000, China
| | - Yuanyuan Liu
- School of Information Engineering, East China Jiaotong University, Nanchang 330013, China.
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Li X, Liu D, Su J, Sun L, Luo H, Chen G, Ma C, Zhang Q. Enhanced Near-Infrared Ultra-Narrow Absorber Based on a Dielectric Nano-Resonant Ring for Refractive Index Sensing. SENSORS (BASEL, SWITZERLAND) 2023; 23:8402. [PMID: 37896499 PMCID: PMC10611014 DOI: 10.3390/s23208402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 09/21/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023]
Abstract
In this paper, a plasmon resonance-enhanced narrow-band absorber based on the nano-resonant ring array of transparent conductive oxides (TCOs) is proposed and verified numerically. Due to the unique properties of TCOs, the structure achieves an ultra-narrowband perfect absorption by exhibiting a near-field enhancement effect. Consequently, we achieve a peak absorption rate of 99.94% at 792.2 nm. The simulation results indicate that the Full Width Half Maximum (FWHM) can be limited to within 8.8 nm. As a refractive index sensor, the device reaches a sensitivity S of 300 nm/RIU and a Figure of Merit (FOM) value of 34.1 1/RIU. By analyzing the distribution characteristics of the electromagnetic field at the 792.2 nm, we find high absorption with a narrow FWHM of the ITO nano-resonant ring (INRR) owing to plasmon resonance excited by the free carriers at the interface between the metal and the interior of the ITO. Additionally, the device exhibits polarization independence and maintains absorption rates above 90% even when the incident formed by the axis perpendicular to the film is greater than 13°. This study opens a new prospective channel for research into TCOs, which will increase the potential of compact photoelectric devices, such as optical sensing, narrowband filtering, non-radiative data transmission and biomolecular manipulation.
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Affiliation(s)
- Xingyu Li
- Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China; (X.L.); (J.S.); (L.S.); (G.C.); (C.M.); (Q.Z.)
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 200031, China
| | - Dingquan Liu
- Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China; (X.L.); (J.S.); (L.S.); (G.C.); (C.M.); (Q.Z.)
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 200031, China
- School of Optoelectronics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Junli Su
- Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China; (X.L.); (J.S.); (L.S.); (G.C.); (C.M.); (Q.Z.)
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 200031, China
| | - Leihao Sun
- Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China; (X.L.); (J.S.); (L.S.); (G.C.); (C.M.); (Q.Z.)
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 200031, China
| | - Haihan Luo
- Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China; (X.L.); (J.S.); (L.S.); (G.C.); (C.M.); (Q.Z.)
- School of Optoelectronics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Gang Chen
- Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China; (X.L.); (J.S.); (L.S.); (G.C.); (C.M.); (Q.Z.)
- School of Optoelectronics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chong Ma
- Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China; (X.L.); (J.S.); (L.S.); (G.C.); (C.M.); (Q.Z.)
| | - Qiuyu Zhang
- Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China; (X.L.); (J.S.); (L.S.); (G.C.); (C.M.); (Q.Z.)
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 200031, China
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