Broadband Microwave Absorbing Composites with a Multi-Scale Layered Structure Based on Reduced Graphene Oxide Film as the Frequency Selective Surface

Ye, Fang; Chen, Song; Zhou, Qian; Yin, Xiaowei; Han, Meikang; Li, Xinliang; Zhang, Litong; Cheng, Laifei

doi:10.3390/ma11091771

Cited by 21 publications

(9 citation statements)

References 43 publications

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“…RAS should have remarkable structural and functional performance, such as minimum thickness, wideband and strong absorption, which had been a bottleneck in RAS development. 11,12 Use of meta surfaces as shields to reduce EM interferences in PCB heatsinks has also been previously reported. 13 Recently, frequency selective surfaces and periodic spatial filtering structures received much attention and were extensively employed for stealth applications such as radome, antennas, and EM shielding to achieve maximum absorption.…”

Section: Introductionmentioning

confidence: 92%

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Novel radar absorbing material using resistive frequency selective surface based polymer composites for enhanced broadband microwave absorption

Amudhu¹,

Samsingh²,

Florence³

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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In this paper, a novel approach using glass fibre laminate composite (GFLC) with nanoparticle embedded nanofibres and frequency selective surfaces (FSS) for improved electromagnetic (EM) wave absorption has been proposed. For enhanced absorption, the FSS was coated with polyvinylidene fluoride (PVDF) mixed with multi-walled carbon nanotubes (MWCNTs). The coatings were prepared through electrospinning technique. The composite prepared from FSS, PVDF-MWCNT layers and GFLC showed enhanced absorption properties. It was demonstrated that the fabricated composites reduced reflection of electromagnetic waves by the material when compared to metals. An 80% increase in EM absorption (with respect to metal) was observed over a wide frequency range with the novel composite at an overall thickness of only 3 mm. X-ray diffraction (XRD) spectra showed an improvement in the electroactive β-phases in the electrospun PVDF/MWCNTs compared to Plain PVDF. Scanning electron microscopy analysis on various weight percentages of PVDF/MWCNTs revealed the formation of nano fibres with an average diameter of 75–160 nm. In addition, the proposed novel EM wave absorbing composites were of simple configuration and the mechanical properties of the fabricated composites were comparable to that of GFLC. Experimental results indicated that RAS with 0.25 wt % MWCNT/PVDF had 87.5% bandwidth for over 90% absorption from 8.5 to 12 GHz compared to all other configurations. The tailored composite material could be used as excellent radar absorber structures (RAS) and can find tremendous application in the manufacture of stealth aircrafts.

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Section: Introductionmentioning

confidence: 92%

“…In order to achieve effective EM wave suppression, studies have been done on polymer composites filled with carbon-based materials such as carbon nanotubes, graphite, graphene oxide and carbon nanofibre. 11,30…”

Section: Introductionmentioning

confidence: 99%

Novel radar absorbing material using resistive frequency selective surface based polymer composites for enhanced broadband microwave absorption

Amudhu¹,

Samsingh²,

Florence³

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…The measurement results demonstrate effective microwave absorption from 10.4 GHz to 19.7 GHz, corresponding to a fractional bandwidth of 62%. Recently, Ye et al proposed a frequency selective surface (FSS) based metasurface absorber with a patterned multilayer rGO sandwiched between two glass fiber layers, as shown in Figure 10a [123]. Two absorption peaks are generated in their device, demonstrating broadband wave absorption at microwave frequencies.…”

Section: Multiband and Broadband Operation For Graphene Metasurface Amentioning

confidence: 99%

“…(a) image of the fabricated flexible multilayer (reduced graphene oxide) rGO. The upper inset illustrates the rGO based frequency selective surface (FSS) sandwiched between two dielectric layers and the lower inset demonstrates the dimensional of a unpatterned multilayer rGO; (b) the measured RL spectra without rGO (blue), with rGO in full coverage (black) and with rGO-FSS (red), reprinted with permission from Ref [123]…”

mentioning

confidence: 99%

Implementation of Atomically Thick Graphene and Its Derivatives in Electromagnetic Absorbers

Tian

Shi

et al. 2019

Applied Sciences

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To reduce the radar cross section at microwave frequencies, it is necessary to implement electromagnetic (EM) absorbing devices/materials to decrease the strength of reflected waves. In addition, EM absorbers also find their applications at higher spectrum such as THz and optical frequencies. As an atomic-thick two-dimensional (2D) material, graphene has been widely used in the development of EM devices. The conductivity of graphene can be electrostatically or chemically tuned from microwave to optical light frequencies, enabling the design of reconfigurable graphene EM absorbers. Meanwhile, the derivatives of graphene such as reduced graphene oxide (rGO) also demonstrate excellent wave absorbing properties when mixed with other materials. In this article, the research progress of graphene and its derivatives based EM absorbers are introduced and the future development of graphene EM absorbing devices are also discussed.

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“…The problem of mutual coupling among the radiating elements is often solved by using defected ground structure (DGS) [2], parasitic elements [3,4], electromagnetic bandgap (EBG) structures [5,6], metamaterial-based resonators [7,8], and frequency-selective surfaces (FSS) [9,10]. Among them, FSS is widely used due to its simple design, easy processing, and excellent effect [11].…”

Section: Introductionmentioning

confidence: 99%

A Graphene-Based Stopband FSS with Suppressed Mutual Coupling in Dielectric Resonator Antennas

et al. 2021

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A novel stopband frequency-selective surface (FSS) made of high-conductivity graphene assemble films (HCGFs) for reducing the mutual coupling between dielectric resonator antennas (DRAs) is investigated and presented. The FSS is a “Hamburg” structure consisting of a two-layer HCGF and a one-layer dielectric substrate. A laser-engraving technology is applied to fabricate the FSS. The proposed improved Jerusalem cross FSS, compared with cross FSS and Jerusalem cross FSS, can effectively reduce the size of the unit cell by 88.89%. Moreover, the FSS, composing of 2 × 10-unit cells along the E-plane, is proposed and embedded between two DRAs, which nearly has no effect on the reflection coefficient of the antenna. However, the mutual coupling is reduced by more than 7 dB on average (7.16 dB at 3.4 GHz, 7.42 dB at 3.5 GHz, 7.71 dB at 3.6 GHz) with the FSS. The patterns of the antenna are also measured. Therefore, it is suggested that the proposed FSS is a good candidate to reduce mutual coupling in the multiple-input–multiple-output (MIMO) antenna system for 5G communication.

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Broadband Microwave Absorbing Composites with a Multi-Scale Layered Structure Based on Reduced Graphene Oxide Film as the Frequency Selective Surface

Cited by 21 publications

References 43 publications

Novel radar absorbing material using resistive frequency selective surface based polymer composites for enhanced broadband microwave absorption

Novel radar absorbing material using resistive frequency selective surface based polymer composites for enhanced broadband microwave absorption

Implementation of Atomically Thick Graphene and Its Derivatives in Electromagnetic Absorbers

A Graphene-Based Stopband FSS with Suppressed Mutual Coupling in Dielectric Resonator Antennas

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