Super Absorbing Ultraviolet Metasurface

Li, Kai; Jiang, Suhua; Ji, Dengxin; Zeng, Xie; Zhang, Nan; Song, Haomin; Xu, Yun; Gan, Qiaoqiang

doi:10.1109/lpt.2015.2428621

Cited by 19 publications

(10 citation statements)

References 31 publications

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“…Since the first demonstration of a metamaterial perfect absorber, extensive research has been conducted in this field. The operating band of the absorber has been expanded from the initial gigahertz range [ 12 ] to many electromagnetic wavebands, including terahertz, [ 13 ] infrared [ 14 ] visible, [ 15 ] and ultraviolet [ 16 ] wavelengths. Furthermore, a perfect absorber also realizes absorption from a single band [ 17 ] to double band, [ 18 ] multi‐band, [ 19 ] and broadband.…”

Section: Introductionmentioning

confidence: 99%

Ultra‐Broadband Wide‐Angle Polarization‐Independent Enhanced Absorber with Ultraviolet to Far‐Infrared Absorption Performance

Wang

et al. 2022

Physica Status Solidi (b)

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Ultra‐thin broadband metamaterial absorbers exhibit high absorptivity and broad bandwidths. Herein, an ultra‐broadband wide‐angle polarization‐independent enhanced absorber with a metal–insulator–metal (MIM) structure is proposed and simulated. The enhanced absorber exhibits ultra‐wideband characteristics from ultraviolet to far‐infrared range (0.35–10 μm), where it achieves an average absorption > 96%. It is insensitive to variations in the polarization state, exhibits a wide‐angle absorption because of a high degree of geometric symmetry, and shows a satisfactory absorption performance for a combination of different materials. Thus, the distinct structural characteristics of the device play a pivotal role in absorption. These advantages improve the flexibility of material selection in the design and manufacturing process of ultra‐broadband enhanced absorbers, thereby broadening their application potential in solar energy harvesting, infrared detectors, and thermal imaging.

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Section: Introductionmentioning

confidence: 99%

Ultra‐Broadband Wide‐Angle Polarization‐Independent Enhanced Absorber with Ultraviolet to Far‐Infrared Absorption Performance

Wang

et al. 2022

Physica Status Solidi (b)

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“… 4 An aluminum-based square patch resonator was presented to realize near 100% absorption of ultraviolet PMAs. 5 Unfortunately, these PMAs only can achieve single-frequency point absorption, which will certainly limit their application capacities.…”

Section: Introductionmentioning

confidence: 99%

A broadband terahertz metamaterial absorber enabled by the simple design of a rectangular-shaped resonator with an elongated slot

et al. 2019

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Broadband metamaterial absorbers are of critical importance in practical applications, but their obtainment approaches are quite complex at present. We demonstrate here that a fairly simple structure design formed by a rectangular-shaped resonator having an elongated slot can be utilized to achieve a broadband absorption response at terahertz frequencies. More than 50% absorption in a continuous frequency range of 1.62 THz (with a central frequency of 2.05 THz) can be gained, and its relative absorption bandwidth is 79.02%, which is superior to that of previous broadband absorption devices. The basic principle of the broadband absorption originates from the superposition of four different but narrowly separated resonance peaks that resulted from different response positions of the suggested resonator.Results further reveal that the broadband terahertz absorption performance (or its four resonance peaks) can be controlled by the resonator dimensions. The suggested method can provide a new type of design strategy to realize broadband integrated terahertz absorption devices.

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“…Metamaterials can be designed to exhibit many different spectral behaviors in various regions in the electromagnetic spectra, and as such have many practical applications 3, . For example, metamaterials for the ultraviolet (UV) region have critical applications in biochemical sensing, defense, and communications 12,13 . In the visible region, applications include solar cells 14,15 , optical cloaking 16,17 , and imaging 18 .…”

mentioning

confidence: 99%

Magnetic field-induced thermal emission tuning of InSb-based metamaterials in the terahertz frequency regime

Caratenuto¹,

Tian²,

Antezza³

et al. 2021

Preprint

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This work theoretically and analytically demonstrates the magnetic field-induced spectral radiative properties of photonic metamaterials incorporating both Indium Antimonide (InSb) and Tungsten (W) in the terahertz (THz) frequency regime. We have varied multiple factors of the nanostructures, including composite materials, layer thicknesses and surface grating fill factors, which impact the light-matter interactions and in turn modify the thermal emission of the metamaterials. We have proposed and validated a method for determining the spectral properties of InSb under an applied direct current (DC) magnetic field, and have employed this method to analyze how these properties can be dynamically tuned by modulating the magnitude of the field. For the first time, we have designed an InSb-W metamaterial exhibiting unity narrowband emission which can serve as an emitter for wavelengths around 55 µm (approximately 5.5 THz). Additionally, the narrowband emission of this metamaterial can be magnetically tuned in both bandwidth and peak wavelength with a normal emissivity close to unity.

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Super Absorbing Ultraviolet Metasurface

Cited by 19 publications

References 31 publications

Ultra‐Broadband Wide‐Angle Polarization‐Independent Enhanced Absorber with Ultraviolet to Far‐Infrared Absorption Performance

Ultra‐Broadband Wide‐Angle Polarization‐Independent Enhanced Absorber with Ultraviolet to Far‐Infrared Absorption Performance

A broadband terahertz metamaterial absorber enabled by the simple design of a rectangular-shaped resonator with an elongated slot

Magnetic field-induced thermal emission tuning of InSb-based metamaterials in the terahertz frequency regime

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