Double layer microwave absorber based on Cu dispersed SiC composites

Singh, Samarjit; Sinha, Ankur; Zunke, Raj Hemant; Kumar, Abhishek; Singh, Dharmendra

doi:10.1016/j.apt.2018.05.008

Cited by 47 publications

(15 citation statements)

References 26 publications

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“…In Figure 11c-e, another bilayer EM absorber was reported by Singh et al [101] SiC was selected as the matrix, and Cu particles were used to optimize its matching and absorbing ability. By ball milling, the two-layered structure was synthesized.…”

Section: Density Fieldmentioning

confidence: 99%

A Novel Strategy in Electromagnetic Wave Absorbing and Shielding Materials Design: Multi‐Responsive Field Effect

et al. 2021

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With the rapid development of 5th Generation Mobile Communication Technology (5G), late-model electromagnetic wave absorbing and shielding (EMAS) materials have proven to be the research emphasis of electromagnetic (EM) wave shelter. Great efforts have been made to optimize EMAS functional materials for diverse EM wavebands. [1] Each range of EM wave bands has a specific application in communication, electrical engineering, or information transmission. [2] For instance, ultrahigh frequency (UHF) EM wave of 0.3 < f < 3 GHz, also known as P/L/S or B/C/D/E band, is applied to television radar air navigation and mobile communication as well as microwave relay systems; the superhigh frequency (SHF) EM wave of 3 < f < 30 GHz, including S/C/X/Ku/K/ Ka-band or F/G/H/I/J/K band, is customarily adopted in digital telecommunication and satellite communication as well as waveguide communication. Moreover, EM waves in other frequency ranges, like terahertz wave and gamma ray, have been widely used in label-free DNA detection, high-temperature superconducting material research, radiographic testing, and even oncotherapy. In these cases, each specific application scenario requires specific EM waves in a specific frequency range, illustrating that EM wave clutters should be absorbed or otherwise shielded. Under these circumstances, developing novel and practical EMAS materials may meet the demands of EM wave science, especially in multifunctional fields.Traditional EMAS materials consist of resistance absorber, [3] dielectric absorber, [4] magnetic medium absorber, [5] and composites based on monomaterials as mentioned earlier, [6] including CuS, [7] MoSe 2 , [8] ferrites and alloys (Co x Fe 3Àx O 4 @C), [9] modified carbons (hollow carbon spheres), [10] etc. In the past decade, 2D transition metal carbides or nitrides, or MXenes, have been prefabricated and naturally applied to EMAS materials synthesis due to their outstanding EM wave loss capacity. [11] Many scholars have devoted themselves to MXene materials and structure design. The electrical conductivity of MXenes can reach 10 3 S cm À1 , leading to extraordinary EM wave shielding property. [12] Many reported MXene absorbers are monolayers, [13] whereas macrostructure design is introduced. Thus, macrodevices, like hollow MXene sphere foam, [14] are synthesized. It is

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Section: Density Fieldmentioning

confidence: 99%

A Novel Strategy in Electromagnetic Wave Absorbing and Shielding Materials Design: Multi‐Responsive Field Effect

et al. 2021

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“…Different from the traditional dielectric substrates (such as FR4 and Rogers), ferritebased heterogeneous nanocomposite material acts as a functional material, which can tune complex dielectric permititivity and complex magnetic permeability (ɛ r and µ r ). The absorption mechanism in nanocomposites can be explained on the basis of dielectric and magnetic loss phenomena results of distinct polarisation effects [2,[6][7][8][9][10][11][12][13]19]. The detailed absorption mechanisms for FSS-based advanced EM structures are provided in our recent work [14,19].…”

Section: Critical Analysis Of Periodic Fractal Fss Coupled With Synthmentioning

confidence: 99%

“…In recent years, nanocomposite materials have become the area of considerable interest for researchers due to their exceptional dielectric properties [5][6][7][8][9][10][11][12][13]. One of the efficient methods for expanding the range of operation frequencies of absorbers is the involvement of frequency selective surfaces (FSSs) and multi-layer structures [3,6,8,9,[12][13][14][15]. FSSs have been proposed for various applications, such as antenna, radar cross section reduction, absorbers, radomes, polarisers, dichroic reflectors, metamaterials, etc.…”

Section: Introductionmentioning

confidence: 99%

Critical analysis of periodic fractal frequency selective surfacescoupled with synthesised ferrite‐based dielectric substrates for optimal radarwave absorption

Mishra¹,

Panwar

Singh

et al. 2019

IET Science, Measurement & Technology

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“…However, ordinary SiC is not suitable for EM absorption due to its poor dielectric behavior, which can be effectively improved by changing its morphology in the nanoscale [9][10][11][12] or blending with relatively higher dielectric materials (e.g., CNTs [13], graphene [14], PPy [15]). The doping or decoration with heterogeneous metal (e.g., Fe [16], Ni [17], Co [18], Al [19], Cu [20]) or compound (Fe 3 O 4 [21], NiO [22], ZnO [23], HfC [24]) is another effective method for obtaining SiC-based absorbers. Generally, SiC-based EA materials with multiple features are designed and supposed to exhibit a more impressive performance, and consists of complicated microstructure and components at the same time.…”

Section: Introductionmentioning

confidence: 99%

Controllable Fabrication of SiC@C-Fe3O4 Hybrids and Their Excellent Electromagnetic Absorption Properties

Duan

Dai

et al. 2021

Nanomaterials

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In this work, a batch of novel ternary hybrids (SiC@C-Fe3O4), characterized by SiC nanowires core, carbon shell, and adhered Fe3O4 nanoparticles were controllably synthesized via surface carbonization of SiCnw followed by hydrothermal reaction. Carbon, which was derived from SiC with nanometer thickness, possesses an amorphous structure, while Fe3O4 nanoparticles are in a crystalline state. Simultaneously, the inducement of Fe3O4 nanoparticles can provide significant magnetic loss, which is well-tuned by changing the molar content of iron precursors (FeCl3·6H2O and FeCl2·4H2O). SiC@C-Fe3O4 hybrids show great electromagnetic absorption performance owing to the synergy effect of dielectric and magnetic losses. The minimum refection loss can reach to −63.71 dB at 11.20 GHz with a thickness of 3.10 mm, while the broad effective absorption bandwidth (EAB) can reach to 7.48 GHz in range of 10.52–18.00 GHz with a thickness of 2.63 mm. Moreover, the EAB can also cover the whole X band and Ku band. The outstanding performance of the obtained material implys that it is a promising candidate as an electromagnetic absorber.

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Double layer microwave absorber based on Cu dispersed SiC composites

Cited by 47 publications

References 26 publications

A Novel Strategy in Electromagnetic Wave Absorbing and Shielding Materials Design: Multi‐Responsive Field Effect

A Novel Strategy in Electromagnetic Wave Absorbing and Shielding Materials Design: Multi‐Responsive Field Effect

Critical analysis of periodic fractal frequency selective surfacescoupled with synthesised ferrite‐based dielectric substrates for optimal radarwave absorption

Controllable Fabrication of SiC@C-Fe3O4 Hybrids and Their Excellent Electromagnetic Absorption Properties

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