Polymer-based nanocomposites: Role of interface for effective microwave absorption

Wang, Junwei; Sun, Qihui; Li, Jinyao; Guo, Yang; Tian, Wei; Liu, Yifan; Wu, Baoshan; Deng, Longjiang; Mahmood, Nasir; Jian, Xian

doi:10.1016/j.mtphys.2023.100981

Cited by 37 publications

(21 citation statements)

References 133 publications

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“…The heterogeneous interfaces are tunable, which probably improves the mobility of charges, charge pair separation, and fast mass transfer. 104 Han et al 105 fabricated a heterogeneous interface by constructing carbon aerogels. A 3D hierarchical structure of rGO-CNT-vertical edge-rich graphene formed by covalent bonding, containing a large number of heterogeneous interfaces led to increased polarization (both charge and interface) and dielectric relaxation.…”

Section: Influence Of Interface On Emi Shieldingmentioning

confidence: 99%

“…Morphology was studied with the aid of HRTEM. 104 FESEM was used to analyze the surface morphology of the fractured NC by Li et al 108 and Bheema et al 56 Fallah et al 53 used SEM to study the NP morphology. Fang et al 64 studied the morphology of vitrimers and segregation of MWCNT with the aid of an optical microscope.…”

Section: Characterization Techniques Of Ep Ncs Used For Emi Shieldingmentioning

confidence: 99%

“…Hence, managing the interface is crucial to attaining the desired balance between mechanical strength and EMI SE. The heterogeneous interfaces are tunable, which probably improves the mobility of charges, charge pair separation, and fast mass transfer 104 …”

Section: Influence Of Interface On Emi Shieldingmentioning

confidence: 99%

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Review on recent progress in epoxy‐based composite materials for Electromagnetic Interference(EMI) shielding applications

Albert,

Parthasarathy,

Kumar

2023

Polymer Composites

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The densely packed electronic components in electronic devices emit electromagnetic (EM) radiations, and the interaction of the emitted EM radiations with external EM signals of neighboring components leads to device malfunctions and also creates health issues in human beings. Particularly, in aircraft, EM interference is a serious threat that leads to disastrous outcomes. The shielding of electronic components is an ideal way to reduce the pollution of electromagnetic interference (EMI). The mechanism of EMI shielding efficiency is discussed elaborately in this article. The factors associated with the EMI shielding of materials are discussed in detail. The EMI shielding by reflection and absorption are two possible routes to improve the shielding performance of the shielding materials. This article also highlights the EMI shielding mechanisms by reflection and absorption. However, the risk of secondary EM pollution is associated with the reflection of EM waves. This review also outlines the methods to improve the absorption‐based shielding performance of the materials. The significance of the microstructure of the shielding materials in enhancing the absorption‐dominant shielding efficiency is also presented with a detailed analysis. This helps to fabricate the absorption‐dominant EMI shielding materials with suitable microstructures. The EM loss is associated with the magnetic, dielectric, and conduction losses according to EM theory.Highlights This article highlights the recent progress in epoxy‐based EMI shielding materials. EMI shielding mechanisms by reflection and absorption are discussed elaborately. Reviewed the methods to improve the absorption‐based shielding performance in detail. Materials with EMI shielding efficiency greater than 30 dB are highly preferable.

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Section: Influence Of Interface On Emi Shieldingmentioning

confidence: 99%

Section: Characterization Techniques Of Ep Ncs Used For Emi Shieldingmentioning

confidence: 99%

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Review on recent progress in epoxy‐based composite materials for Electromagnetic Interference(EMI) shielding applications

Albert,

Parthasarathy,

Kumar

2023

Polymer Composites

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“…“Thin thickness, low density, broadband, strong absorption, and excellent stability” have become the research and development goals of today’s absorbing materials. , However, a single loss mechanism prevents single-phase materials from meeting the above requirements. In the past decade, due to the synergistic effect of different components, composite materials have shown better EWA performance, which has attracted extensive research. − Hence, developing composite materials that meet the demand will become a focus of future research.…”

Section: Introductionmentioning

confidence: 99%

Amorphous Carbon Regulates Defects to Achieve TaC Nanowires with Enhanced Microwave Absorption

Wen,

Guan,

Zhang

et al. 2024

ACS Appl. Nano Mater.

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Carbon/carbon composite materials, as electromagnetic wave-absorbing (EWA) materials, have been widely studied due to their excellent impedance matching and high dielectric loss. In this work, we introduced amorphous carbon into the TaC nanowire (TaC nws ) matrix, effectively optimizing impedance matching. The inclusion of amorphous carbon introduces a substantial quantity of imperfections and interfaces, thereby promoting polarization. The multipolarization loss and magnetic loss mechanism generate electromagnetic synergistic loss effects, significantly improving the attenuation performance of EW. The TaC nws /C sample exhibits exceptional EWA performance, achieving a minimum reflection loss (RL min ) of −54.25 dB and an effective absorption bandwidth (EAB) of 3.6 GHz at a low thickness of merely 1.4 mm. This study presents a novel methodology for the future fabrication of TMC composite materials, thereby holding substantial research implications.

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“…The recent interest to the polymeric nanocomposite materials owes to their unique mechanical, chemical, electro-dynamical, and optical properties relevant for numerous applications. − …”

Section: Introductionmentioning

confidence: 99%

Heterogeneous Model for Precursor-Mediated Nanoparticle Growth in Polymer Film

Bityurin,

Sapogova,

Pikulin

2023

J. Phys. Chem. C

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The inorganic nanoparticle growth within a polymer matrix is due to generation of the elementary species, the monomers, because of decomposition of the precursor compounds. The nucleation of the nanoparticles can be either homogeneous or heterogeneous. The model for heterogeneous nucleation and growth considered in this paper with some natural assumptions can explain experimentally observed exposure dependence of the UV-initiated CdS nanoparticle growth in poly(methyl methacrylate) (PMMA). The constraints on the values of the parameters imposed by the assumptions are discussed. Analytical solutions for the dynamics of the particle size distributions are obtained by reduction of the set of ordinary differential equations to the partial differential equation. The dependences of the particle size distributions on the parameters involved are found. This allows modeling the evolution of the optical absorption spectrum of the nanocomposite material due to nanoparticle growth.

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Polymer-based nanocomposites: Role of interface for effective microwave absorption

Cited by 37 publications

References 133 publications

Review on recent progress in epoxy‐based composite materials for Electromagnetic Interference(EMI) shielding applications

Review on recent progress in epoxy‐based composite materials for Electromagnetic Interference(EMI) shielding applications

Amorphous Carbon Regulates Defects to Achieve TaC Nanowires with Enhanced Microwave Absorption

Heterogeneous Model for Precursor-Mediated Nanoparticle Growth in Polymer Film

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