Design of Narrow-Band Absorber Based on Symmetric Silicon Grating and Research on Its Sensing Performance

Pan, Mingyang; Huang, Huazhu; Chen, Wenzhi; Li, Shuai; Xie, Qinglai; Xu, Feng; Wei, Dongwei; Fang, Jun; Fan, Baodian; Cai, Lihan

doi:10.3390/coatings11050553

Cited by 6 publications

(2 citation statements)

References 61 publications

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“…In the combination of absorbers and the PSOs in the past, most researchers often choose the average absorption rate of the region as the figure of merit (FOM), which ignores the need for broadband absorbers to meet a wider absorption bandwidth. Therefore, after discussion, we define the formula of FOM as follows [32][33][34]:…”

Section: Particle Swarm Optimizationmentioning

confidence: 99%

Active Broadband Absorber Based on Phase-Change Materials Optimized via Evolutionary Algorithm

Ma,

Tian,

Cheng

et al. 2023

Coatings

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This article proposes a temperature-controlled absorber based on VO2, which consists of five layers: a disk-shaped VO2 layer array, a dielectric layer, a circular hole VO2 array, a SiO2 layer, and a gold substrate from top to bottom. We optimized the thickness of the other four layers of the absorber, except for the gold layer, using PSO. After ten iterations, we determined that the optimal parameters for the top-to-bottom four-layer thicknesses were 0.183 μm, 0.452 μm, 0.557 μm and 1.994 μm. At this point, our absorber reached the optimal absorption parameters, and we plotted the absorption spectrum under these conditions. We found that the absorption rate at 29.1–47.2 THz was higher than 90%, and the absorption bandwidth was as high as 18.1 THZ. This frequency band covers most of the atmospheric window area (23–37.5 THz), so it will have good practicality. At 30.8 THz and 43.12 THz, there were perfect absorption peaks with absorption rates of 99.99% and 99.99%, respectively. We explained the cause of absorption from the perspective of electric field, and then we studied the change in the absorption curve of the absorber when the temperature of VO2 changed, and we can directly observe the changes in the electric field to explain this. Finally, we can tune the bandwidth and absorption rate of the absorber by changing the structure of the VO2 pattern. After comparing with other absorbers developed in recent years, our absorber still has good competitiveness, and we believe that our solution is expected to have outstanding performance in fields such as photothermal conversion and thermal stealth in the future.

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Section: Particle Swarm Optimizationmentioning

confidence: 99%

Active Broadband Absorber Based on Phase-Change Materials Optimized via Evolutionary Algorithm

Ma,

Tian,

Cheng

et al. 2023

Coatings

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“…Since then, many researchers have developed broadband absorption based on the narrowband singlefrequency absorber presented by Landy, and its absorption efficiency has been greatly improved [23][24][25]. Nowadays, various perfect absorbers with different characteristics are becoming active in increasingly more fields [26][27][28]. However, these absorbers mentioned above exhibit a defect: once the structure of the absorber is proposed, the optical properties cannot be changed flexibly.…”

Section: Introductionmentioning

confidence: 99%

A Tunable “Ancient Coin”-Type Perfect Absorber with High Refractive Index Sensitivity and Good Angular Polarization Tolerance

Luo

Shangguan

et al. 2021

Coatings

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In this paper, we design and present a graphene-based “ancient coin”-type dual-band perfect metamaterial absorber, which is composed of a silver layer, silicon dioxide layer, and a top “ancient coin” graphene layer. The absorption performance of the absorber is affected by the hollowed-out square in the center of the graphene layer and geometric parameters of the remaining nano disk. The optical properties of graphene can be changed by adjusting the voltage, to control the absorption performance of the absorber dynamically. In addition, the centrally symmetric pattern structure greatly eliminates the polarization angle dependence of our proposed absorber, and it exhibits good angular polarization tolerance. Furthermore, the proposed “ancient coin”-type absorber shows great application potential as a sensor or detector in biopharmaceutical, optical imaging, and other fields due to its strong tunability and high refractive index sensitivity.

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Dielectric‐Based Metamaterials for Near‐Perfect Light Absorption

Wang,

Qin,

Duan

et al. 2024

Adv Funct Materials

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The emergence of metamaterials and their continued prosperity have built a powerful working platform for accurately manipulating the behavior of electromagnetic waves, providing sufficient possibility for the realization of metamaterial absorbers with outstanding performance. However, metamaterial absorbers composed of metallic materials typically possess many unfavorable factors, such as non‐adjustable absorption, easy oxidation, low‐melting, and expensive preparation costs. The selection of dielectric materials provides excellent alternatives due to their remarkable properties, thus dielectric‐based metamaterial absorbers (DBMAs) have attracted much attention. To promote breakthroughs in DBMAs and guide their future development, this work systematically and deeply reviews the recent research progress of DBMAs from four different but progressive aspects, including physical principles; classifications, material selections and tunable properties; preparation technologies; and functional applications. Five different types of theories and related physical mechanisms, such as Mie resonance, guided‐mode resonance, and Anapole resonance, are briefly outlined to explain DBMAs having near‐perfect absorption performance. Mainstream material selections, structure designs, and different types of tunable DBMAs are highlighted. Several widely utilized preparation methods for customizing DBMAs are given. Various practical applications of DBMAs in sensing, stealth technology, solar energy absorption, and electromagnetic interference suppression are reviewed. Finally, some key challenges and feasible solutions for DBMAs’ future development are provided.

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Design of Narrow-Band Absorber Based on Symmetric Silicon Grating and Research on Its Sensing Performance

Cited by 6 publications

References 61 publications

Active Broadband Absorber Based on Phase-Change Materials Optimized via Evolutionary Algorithm

Active Broadband Absorber Based on Phase-Change Materials Optimized via Evolutionary Algorithm

A Tunable “Ancient Coin”-Type Perfect Absorber with High Refractive Index Sensitivity and Good Angular Polarization Tolerance

Dielectric‐Based Metamaterials for Near‐Perfect Light Absorption

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