Structural, Morphological, Electrical, Magnetic, and dielectric properties of Zn0.5-xCa0.1Co0.4+xFe2O4 through the sol-gel method for flexible substrates in food chemical sensing

Materials & Design, Год журнала: 2024, Номер 244, С. 113219 - 113219

Опубликована: Июль 31, 2024

Food safety is a critical public health priority, as food chemicals such formalin, saccharin, sucralose, and sodium benzoate present significant threat. A flexible substrate based on Zn-Ca-Co ferrite proposed solution to concerns, addressing limitations found in conventional microwave sensors. This study explores the possibilities of Zn0.5-xCa0.1Co0.4+xFe2O4 (x ranging from 0 0.30) nanoparticles synthesized by sol–gel substrate, modified labyrinth-shape metamaterial structure reveals μ-negative characteristics 7.084 7.48 GHz. The dielectric constant varied with composition, generating values 1.34 1.84 for x 0.0 0.3. sensor's performance assessed at various concentrations each analyte, showing clear link between chemical concentration sensor response. resonant frequency shift decreased analyte increased, formalin shifting 110 MHz 5 % 40 20 saccharin 470 25 210 33 notable sensitivity, 0.56 7.01 %. perceptible novelty this that it introduces enhanced magnetic properties, designed sensing, integrated into flexible, applications.

Язык: Английский

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Carbon Based Composite Materials for Microwave Absorption in Low Frequency S and C Band: A Review

ChemNanoMat, Год журнала: 2024, Номер unknown

Опубликована: Окт. 7, 2024

Abstract With the rapid advancement of 5G technologies and electronic devices, there is a growing demand for microwave absorbing materials, especially those effective in low frequency bands (2–8 GHz), making it an essential requirement. In recent years, many innovative absorbers have been developed absorption, with carbon/magnetic composite materials becoming particularly promising due to their various loss mechanisms optimized impedance matching characteristics over wide range. However, currently lack comprehensive review that summarizes findings on absorbers. This article thoroughly examines current research efficient absorption performance low‐frequency S C bands. It provides detailed discussion these materials. Furthermore, design strategies, synthesis techniques, microstructure relationship, attenuation are summarized. Lastly, challenges future outlook addressed. aspires provide new insights into designing synthesizing accomplish thereby promoting practical applications.

Язык: Английский

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Periodic magnetically oriented gradient structures with flower-like surface for enhancing microwave absorption efficiency

Composite Structures, Год журнала: 2024, Номер 338, С. 118121 - 118121

Опубликована: Апрель 13, 2024

Язык: Английский

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Structural Design of FeCo/C Magnetic Nanocomposites: Implications Toward C-Band Electromagnetic Wave Absorption

ACS Applied Nano Materials, Год журнала: 2024, Номер 7(16), С. 19602 - 19618

Опубликована: Авг. 11, 2024

The rapid advancements in radar and electromagnetic communication technologies have sparked a pressing need for thin, lightweight, highly efficient low-frequency absorbing materials (EAMs) tailored the C-band. However, close linear correlation between real imaginary permittivity components of EAMs at low frequencies hinders decoupling wave impedance dissipation, posing formidable challenge achieving satisfactory absorption performance. In this study, strategy targeting C-band encompassing material design structural engineering has been formulated. Leveraging high-efficiency microwave plasma-assisted reduction chemical vapor deposition (MPARCVD) technique, FeCo/C magnetic nanocomposites were successfully synthesized, offering cost-effective energy-saving solution. growth carbon microspheres on FeCo alloy particle surfaces significantly regulated permittivities within broad range, attributed to drastic improvement interfacial polarization electrical conductivity. This versatile platform facilitated engineering, enabling optimization matching layer layer. Notably, our achieved minimal reflection loss −36.8 dB, along with an effective bandwidth spanning from 3.84 12 GHz, covering both X-band. work provides attaining superior performance C-band, opening up promising avenues applications interference shielding stealth technology frequency range.

Язык: Английский

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High electromagnetic wave absorption and thermal conductivity of vertically oriented boron nitride/carbonyl iron/silicone rubber composites

Journal of Alloys and Compounds, Год журнала: 2024, Номер unknown, С. 176567 - 176567

Опубликована: Сен. 1, 2024

Язык: Английский

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Fabrication of hollow Fe3O4 microspheres encapsulated by single-walled carbon nanohorns for high-performance microwave absorption

Ceramics International, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 1, 2024

Язык: Английский

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One-step solvothermal synthesis of hollow Fe3O4/single walled carbon nanohorns composites with excellent microwave absorption properties

Diamond and Related Materials, Год журнала: 2024, Номер unknown, С. 111783 - 111783

Опубликована: Ноя. 1, 2024

Язык: Английский

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A Robust Hierarchical Mxene Nanocomposite by Valid Magnetoelectric Coordination for Efficient Electromagnetic Response

Опубликована: Янв. 1, 2025

Язык: Английский

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The “two birds with one stone” strategy enhances the high corrosion resistance and electromagnetic wave absorption of NiSe2/NC/MXene composites

Applied Surface Science, Год журнала: 2025, Номер unknown, С. 162621 - 162621

Опубликована: Фев. 1, 2025

Язык: Английский

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Synthesis of a Leaf-Like Co/C Nanosheet for Efficient Microwave Absorption

Langmuir, Год журнала: 2025, Номер unknown

Опубликована: Фев. 24, 2025

Elaborate engineering of the microstructure electromagnetic (EM) absorption materials affords infinite potential for achieving superior EM wave performance. In this work, a leaf-like Co/C nanosheet was rationally fabricated by facile pyrolysis CoZn-based zeolitic imidazolate framework-L (Co/Zn-ZIF-L) precursor. Herein, Co nanoparticles (NPs) are uniformly confined in porous carbon matrix, forming attractive heterostructures. A suitable 2D morphology and binary components endow composite with impedance matching synergetic losses excellent microwave radar stealth When filler content is as low 25 wt %, strong intensity −47.6 dB reached at thickness 2.1 mm, broad effective bandwidth 4.9 GHz achieved only 1.6 mm. At detection theta 0°, maximum cross-sectional (RCS) reduction value reaches 17.9 dB·m2. Hence, it expected that exhibits significant advantages field stealth, which paves way future exploration high-performance materials.

Язык: Английский

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