Toward high performance microwave absorber by implanting La0.8CoO3 nanoparticles on rGO

Chang, Li; Wang, Yu-Ze; Zhang, Xin-Ci; Li, Lin; Zhai, Hua-Zhang; Cao, Mao-Sheng

doi:10.1016/j.jmst.2023.06.062

Cited by 37 publications

(2 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To further investigate polarization relaxation, the Cole–Cole plots of MT-3 are plotted. According to Debye’s theory, semicircles in the Cole–Cole plots indicate occurring polarization relaxations in the materials [ 31 ]. As shown in Figs.…”

Section: Resultsmentioning

confidence: 99%

In Situ Atomic Reconstruction Engineering Modulating Graphene-Like MXene-Based Multifunctional Electromagnetic Devices Covering Multi-Spectrum

Liu,

Zheng,

Cao

et al. 2024

Nano-Micro Lett.

Self Cite

View full text Add to dashboard Cite

With the diversified development of big data, detection and precision guidance technologies, electromagnetic (EM) functional materials and devices serving multiple spectrums have become a hot topic. Exploring the multispectral response of materials is a challenging and meaningful scientific question. In this study, MXene/TiO2 hybrids with tunable conduction loss and polarization relaxation are fabricated by in situ atomic reconstruction engineering. More importantly, MXene/TiO2 hybrids exhibit adjustable spectral responses in the GHz, infrared and visible spectrums, and several EM devices are constructed based on this. An antenna array provides excellent EM energy harvesting in multiple microwave bands, with |S11| up to − 63.2 dB, and can be tuned by the degree of bending. An ultra-wideband bandpass filter realizes a passband of about 5.4 GHz and effectively suppresses the transmission of EM signals in the stopband. An infrared stealth device has an emissivity of less than 0.2 in the infrared spectrum at wavelengths of 6–14 µm. This work can provide new inspiration for the design and development of multifunctional, multi-spectrum EM devices.

show abstract

Section: Resultsmentioning

confidence: 99%

In Situ Atomic Reconstruction Engineering Modulating Graphene-Like MXene-Based Multifunctional Electromagnetic Devices Covering Multi-Spectrum

Liu,

Zheng,

Cao

et al. 2024

Nano-Micro Lett.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The RL of the PS-based samples was estimated by the transmission line theory. − The relative permittivity (ε), relative permeability (μ), and impedance matching ( Z ) are the salient parameters tuning microwave-absorbing features. Conductive loss and polarizations, including dipole and interfacial polarization, bring permittivity; meanwhile, natural resonance, exchange resonance, and eddy current loss establish permeability.…”

Section: Resultsmentioning

confidence: 99%

Plasma Engineering toward Improving the Microwave-Absorbing/Shielding Feature of a Biomass-Derived Material

Selseleh-Zakerin,

Mirkhan,

Shafiee

et al. 2024

Langmuir

View full text Add to dashboard Cite

During the past decade, ever-increasing electromagnetic pollution has excited a global concern. A sustainable resource, facile experimental scenario, fascinating reflection loss (RL), and broad efficient bandwidth are the substantial factors that intrigue researchers. This research led to the achievement of a brilliant microwave-absorbing material by treating pampas as biomass. The carbon-based microfibers attained by biowaste were treated by plasma under diverse environments to amplify their microwave-absorbing features. Moreover, a pyrolysis scenario was performed to compare the results. The reductive processes were performed by H 2 plasma and carbonization. However, the CO 2 plasma was performed to regulate the heteroatoms and defects. Interestingly, polystyrene (PS) was applied as a microwaveabsorbing matrix. The aromatic rings existing in the absorbing medium establish electrostatic interactions, elevating interfacial polarization, and physical characteristics of PS augment the practical applications of the final product. The manipulated biomasses were characterized by Raman, X-ray diffraction, energy-dispersive spectroscopy, field emission scanning electron microscopy, and diffuse reflection spectroscopy analyses. Eventually, the microwave-absorbing features were estimated by a vector network analyzer. The plasma-treated pampas under H 2 /Ar blended with PS gained a maximum RL of −90.65 dB at 8.79 GHz and an efficient bandwidth (RL ≤ −10 dB) of 4.24 GHz with a thickness of 3.20 mm; meanwhile, plasma treatment under CO 2 led to a maximum RL of 97.99 dB at 14.92 GHz and an efficient bandwidth of 7.74 GHz with a 2.05 mm thickness. Particularly, the biomass plasmolyzed under Ar covered the entire X and K u bands with a thickness of 2.10 mm. Notably, total shielding efficiencies of the treated bioinspired materials were up to ≈99%, desirable for practical applications.

show abstract

A Pomegranate‐Like Nanolayer Featuring A Core‐Shell Architectural Design for Thermal‐Mechanical‐Electromagnetic Responses and Sensor

Fan,

Zhang,

Zhang

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

Multifunctional electromagnetic wave (EMW) absorbing materials are attracting attention because of their potential applications in medical, livelihood, and military. In this study, a pomegranate‐like nanolayer featuring a core‐shell architecture (PNCS) is prepared using a confinement strategy. Introducing metal atoms into this unique pomegranate‐like design (M‐PNCS, M = Mn, Fe, Co, Ni, and Cu) effectively tuned the electromagnetic response and improved the electromagnetic functions. The Mn‐PNCS composite exhibited the highest electromagnetic absorption. Its reflection loss (RL) reached −62.39 dB with an effective absorption bandwidth (EAB) at 1.8 mm of 6.0 GHz. As the charge transport capacity of the Mn‐PNCS increases, its absorption can be transformed into shielding, with a green shielding index of up to 3.54. On this basis, Mn‐PNCS is used to fabricate a multifunctional film and a new design of strain sensor. This multifunctional film integrated electromagnetic absorption, thermal insulation, hydrophobicity, flexibility, and sensing, thus showing potential for use in wearable electromagnetic protective clothing. In addition, the sensors in the simulation design achieved strain sensing through the coupling effect between the Mn‐PNCS patterns. These findings demonstrate that Mn‐PNCS is an excellent multifunctional material with potential applications in the technical fields of EMW absorption, electromagnetic shielding, and wearable devices.

show abstract

Toward high performance microwave absorber by implanting La0.8CoO3 nanoparticles on rGO

Cited by 37 publications

References 46 publications

In Situ Atomic Reconstruction Engineering Modulating Graphene-Like MXene-Based Multifunctional Electromagnetic Devices Covering Multi-Spectrum

In Situ Atomic Reconstruction Engineering Modulating Graphene-Like MXene-Based Multifunctional Electromagnetic Devices Covering Multi-Spectrum

Plasma Engineering toward Improving the Microwave-Absorbing/Shielding Feature of a Biomass-Derived Material

A Pomegranate‐Like Nanolayer Featuring A Core‐Shell Architectural Design for Thermal‐Mechanical‐Electromagnetic Responses and Sensor

Contact Info

Product

Resources

About