Ultrabroadband absorber based on a funnel-shaped anisotropic metamaterial

Abdelatif, G.; Hameed, Mohamed Farhat O.; Obayya, S. S. A.; Hussein, Mohamed

doi:10.1364/josab.36.002889

Cited by 18 publications

(13 citation statements)

References 31 publications

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“…[ 159 ] In the frequency range of 7.8–14.7 GHz, the average absorption exceeds 90%. In the meantime, BMAs using tungsten (W)‐based [ 160 ] and funnel‐shaped resonators [ 161 ] have been proposed to enrich the evidence of the slow light effect. Indeed, BMAs based on the slow light effect usually employ many metal‐dielectric stacks, leading to a more expensive construction cost.…”

Section: Theoretical Foundations or Principles Of Broadband Metamater...mentioning

confidence: 99%

“…For the vertical design of BMAs, this section mainly discusses two kinds of stacking strategies according to their metal–insulator pairs (or broadband types): 1) Stacking methods with less than 10 pairs of metal–insulator for broadband absorption; [ 366–368 ] 2) stacking methods with greater than 10 pairs of metal–insulator based on slow light theory or mechanism for ultra‐broadband absorption. [ 160,161,369 ]…”

Section: Design Strategies Of Broadband Metamaterials Absorbersmentioning

confidence: 99%

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Review of Broadband Metamaterial Absorbers: From Principles, Design Strategies, and Tunable Properties to Functional Applications

Wang

Duan

et al. 2023

Adv Funct Materials

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Metamaterial absorbers have been widely studied and continuously concerned owing to their excellent resonance features of ultra-thin thickness, light-weight, and high absorbance. Their applications, however, are typically restricted by the intrinsic dispersion of materials and strong resonant features of patterned arrays (mainly referring to narrow absorption bandwidth). It is, therefore essential to reassert the principles of building broadband metamaterial absorbers (BMAs). Herein, the research progress of BMAs from principles, design strategies, tunable properties to functional applications are comprehensively and deeply summarized. Physical principles behind broadband absorption are briefly discussed, typical design strategies in realizing broadband absorption are further emphasized, such as top-down lithography, bottom-up self-assembly, and emerging 3D printing technology. Diversified active components choices, including optical response, temperature response, electrical response, magnetic response, mechanical response, and multi-parameter responses, are reviewed in achieving dynamically tuned broadband absorption. Following this, the achievements of various interdisciplinary applications for BMAs in energy-harvesting, photodetectors, radar-IR dual stealth, bolometers, noise absorbing, imaging, and fabric wearable are summarized. Finally, the challenges and perspectives for future development of BMAs are discussed.

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Section: Theoretical Foundations or Principles Of Broadband Metamater...mentioning

confidence: 99%

Section: Design Strategies Of Broadband Metamaterials Absorbersmentioning

confidence: 99%

Review of Broadband Metamaterial Absorbers: From Principles, Design Strategies, and Tunable Properties to Functional Applications

Wang

Duan

et al. 2023

Adv Funct Materials

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“…Their metamaterialbased architecture displays a broadband and omnidirectional response at infrared and visible wavelengths, thus representing a promising platform for energy-efficient photodetection and energy harvesting beyond the bandgap spectral limit. More recently, Abdelatif et al proposed a funnel-shaped anisotropic metamaterial absorber made of periodic array of nickel-germanium (Ni/ Ge) enabling enhanced broadband absorption (up to 96%) due to the excitation of multiple orders of slow-light modes over a wavelength range from the ultraviolet to NIR range [100]. In 2017, Riley et al have synthetized transferrable hyperbolic metamaterial particles showing broadband, selective, omnidirectional, perfect absorption.…”

Section: Enabling Highly Tunable Engineering Of the Optical Density Omentioning

confidence: 99%

Hyperbolic dispersion metasurfaces for molecular biosensing

et al. 2020

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Sensor technology has become increasingly crucial in medical research and clinical diagnostics to directly detect small numbers of low-molecular-weight biomolecules relevant for lethal diseases. In recent years, various technologies have been developed, a number of them becoming core label-free technologies for detection of cancer biomarkers and viruses. However, to radically improve early disease diagnostics, tracking of disease progression and evaluation of treatments, today’s biosensing techniques still require a radical innovation to deliver high sensitivity, specificity, diffusion-limited transport, and accuracy for both nucleic acids and proteins. In this review, we discuss both scientific and technological aspects of hyperbolic dispersion metasurfaces for molecular biosensing. Optical metasurfaces have offered the tantalizing opportunity to engineer wavefronts while its intrinsic nanoscale patterns promote tremendous molecular interactions and selective binding. Hyperbolic dispersion metasurfaces support high-k modes that proved to be extremely sensitive to minute concentrations of ultralow-molecular-weight proteins and nucleic acids.

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“…For instance, Han et al realized a metamaterial graphene absorber consisting of four patch resonators so that the absorption rate exceeded 90% in the frequency range of 20.5–70 THz [ 34 ]. Abdelatif and co-workers proposed a funnel-shaped anisotropic MMA with absorption of 96% in the wavelength range of 200–9000 nm, which consisted of nickel–germanium (Ni/Ge) multilayer stacks [ 35 ]. Despite the significant development of the above method in high-efficiency broadband absorption, it is still challenging to achieve ultra-broadband absorption of metamaterial absorbers with a simple structure, low processing cost, and simple experimental processing procedures for practical applications.…”

Section: Introductionmentioning

confidence: 99%

Ultra-Broadband Refractory All-Metal Metamaterial Selective Absorber for Solar Thermal Energy Conversion

Chen

Niu

et al. 2021

Nanomaterials

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A full-spectrum near-unity solar absorber has attracted substantial attention in recent years, and exhibited broad application prospects in solar thermal energy conversion. In this paper, an all-metal titanium (Ti) pyramid structured metamaterial absorber (MMA) is proposed to achieve broadband absorption from the near-infrared to ultraviolet, exhibiting efficient solar-selective absorption. The simulation results show that the average absorption rate in the wavelength range of 200–2620 nm reached more than 98.68%, and the solar irradiation absorption efficiency in the entire solar spectrum reached 98.27%. The photothermal conversion efficiency (PTCE) reached 95.88% in the entire solar spectrum at a temperature of 700 °C. In addition, the strong and broadband absorption of the MMA are due to the strong absorption of local surface plasmon polariton (LSPP), coupled results of multiple plasmons and the strong loss of the refractory titanium material itself. Additionally, the analysis of the results show that the MMA has wide-angle incidence and polarization insensitivity, and has a great processing accuracy tolerance. This broadband MMA paves the way for selective high-temperature photothermal conversion devices for solar energy harvesting and seawater desalination applications.

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Ultrabroadband absorber based on a funnel-shaped anisotropic metamaterial

Cited by 18 publications

References 31 publications

Review of Broadband Metamaterial Absorbers: From Principles, Design Strategies, and Tunable Properties to Functional Applications

Review of Broadband Metamaterial Absorbers: From Principles, Design Strategies, and Tunable Properties to Functional Applications

Hyperbolic dispersion metasurfaces for molecular biosensing

Ultra-Broadband Refractory All-Metal Metamaterial Selective Absorber for Solar Thermal Energy Conversion

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