Flexible frequency-selective rasorber based on metal-graphene hybrid metamaterial

Yang, Yaojia; Wu, Bian; Chen, Biao; Zhao, Yutong

doi:10.1364/oe.451898

Cited by 22 publications

(9 citation statements)

References 41 publications

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“…In this paper, the graphene films were processed with graphene ink using screen-printing technology. The preparation and characterizations of graphene conductive ink have been reported in our previous works [ 16 , 17 , 18 ]. The raw material proportioning in this paper was modified and is given in Table 2 .…”

Section: Fabrication Measurement and Discussionmentioning

confidence: 99%

An Ultra-Broadband and Highly-Efficient Metamaterial Absorber with Stand-Up Gradient Impedance Graphene Films

Chen

et al. 2023

Materials

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Metamaterial absorbers (MMAs) that absorb electromagnetic waves among an ultra-broad frequency band have attracted great attention in military and civilian applications. In this paper, an ultra-broadband and highly-efficient MMA is presented. The unit cell of the proposed MMA was constructed with two cross-placed stand-up gradient impedance graphene films, which play a key role in improving impedance matching. Considering the trade-off between absorbing performance and processing complexity, in our design, we adopted the stand-up graphene films that have a gradient with three orders of magnitude in total. The simulated results of the proposed absorber show an ultra-broadband absorption (absorptivity > 90%) from 1.8 GHz to 66.7 GHz and a highly-efficient absorption (absorptivity > 97%) in the range of 2–21.7 GHz and 39.6–57 GHz. The field analysis was adopted to explain the mechanism of the proposed absorber. To validate this design, a prototype of 20 × 20 units was processed and assembled. The graphene films were processed with graphene conductive ink using screen print technology. The measured results are in good agreement with the simulated ones. The proposed absorber may find potential applications in the field of stealth technologies and electromagnetic interference.

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Section: Fabrication Measurement and Discussionmentioning

confidence: 99%

An Ultra-Broadband and Highly-Efficient Metamaterial Absorber with Stand-Up Gradient Impedance Graphene Films

Chen

et al. 2023

Materials

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“…Electrically heated films composed of electromagnetic shielding materials such as MXenes and graphene are commonly employed to address deicing issues. − However, MXenes are relatively expensive, rendering them unsuitable for large-scale application. Traditional graphene electric heating films, characterized by their minimal mass (with film thicknesses attainable down to the order of tens of micrometers) and superior heating efficiency, are prevalently employed for deicing applications. − Nonetheless, this methodology predominantly relinquishes electromagnetic wave transmission capabilities to secure effective deicing outcomes. , Frequency Selective Surfaces (FSSs) have been extensively applied in the realm of wave-transmissive materials in recent years. , Through intricate pattern design that leverages their selective transmission properties, films with both heating and wave-transmission capabilities can be fabricated. However, an optimal electrical conductivity is a requisite for FSSs, whereas excessive conductivity in electric heating materials is typically undesirable.…”

Section: Introductionmentioning

confidence: 99%

A Tri-Layer Structural Film Containing Nickel Nanocoating for Electromagnetic Transmittance and Joule Heating

Zhao,

Xu,

et al. 2024

ACS Appl. Nano Mater.

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In the realm of military applications, the effective management of ice accumulation on strategic equipment without compromising the integrity of the electromagnetic signal transmission is a perennial challenge. To confront this issue, a revolutionary trilayered material composite known as MPE (metal-polyimide-electric heating layer) has been developed, demonstrating a sophisticated balance between deicing functionality and electromagnetic transparency. The MPE composite is ingeniously architected in a trilayer configuration, comprising a frequency-selective wave-transmissive stratum, an interjacent insulating dielectric interlayer, and an electric heating layer. The former is the result of a pioneering surface grafting modality of keratin, subsequently metallized with a nickel (Ni) coat via a chemical plating technique, which concurrently imparts the composite with a temperature-sensitivity range between −10 and 80 °C. The latter is formulated from a cyanate ester (CE) resin with organic conductive fillers, endowing the material with a high thermal threshold of up to 220 °C. Experimental evaluations of the MPE material have yielded a remarkable 88% transmissivity at the designated resonant frequency, a significant improvement over traditional graphene heating layer. This high level of performance, combined with the material's inherent deicing properties and the capacity for remote control via integrated sensing technology, positions the MPE as a substantial breakthrough for military operations.

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“…To further enhance the stealth performance of FSS design, an integrated design with metamaterial absorbers, known as superstrate absorbers, has been proposed. From the relationship between absorption bands and transmission windows, FSS absorbers can be classified into three types: (1) low-frequency absorption and high-frequency transmission [6,7] (2) low-frequency transmission and high-frequency absorption [8,9], and (3) absorption bands on both sides of the passband [10][11][12]. Metamaterial absorbers are a type of artificial, sub-wavelength, two-dimensional structure capable of absorbing specific frequency bands of electromagnetic waves [13,14].…”

Section: Introductionmentioning

confidence: 99%

A compact frequency-selective absorber with optical transparency

Deng,

Li,

Wang

et al. 2024

Mater. Res. Express

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This article proposes a new method for designing an optical transparent frequency-selective surface absorber using indium tin oxide (ITO) conductive film with different sheet resistances. This novel optical transparent frequency-selective absorber exhibits excellent optical transparency, ensuring a visible light transmittance exceeding 76%. Simultaneously, it exhibits broadband absorption characteristics covering the entire X-Ku band, with an absorption rate exceeding 90%. Due to the simplicity of the design, the overall structure is easily processable, and the desired product can be rapidly fabricated using laser etching equipment without adding any lumped elements in the design. Simulation and experimental results indicate that the S11-10dB frequency range of the frequency-selective absorber is 7.7-18.4 GHz, with a transmission frequency range below -3dB between 26.7-29.4 GHz. The findings suggest that this structure holds potential applications in microwave stealth design requiring optical transparency and high-throughput satellite communication scenarios.

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Flexible frequency-selective rasorber based on metal-graphene hybrid metamaterial

Cited by 22 publications

References 41 publications

An Ultra-Broadband and Highly-Efficient Metamaterial Absorber with Stand-Up Gradient Impedance Graphene Films

An Ultra-Broadband and Highly-Efficient Metamaterial Absorber with Stand-Up Gradient Impedance Graphene Films

A Tri-Layer Structural Film Containing Nickel Nanocoating for Electromagnetic Transmittance and Joule Heating

A compact frequency-selective absorber with optical transparency

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