Journal of Magnetism and Magnetic Materials, Год журнала: 2024, Номер unknown, С. 172688 - 172688
Опубликована: Ноя. 1, 2024
Язык: Английский
Advances in Colloid and Interface Science, Год журнала: 2024, Номер 332, С. 103250 - 103250
Опубликована: Июль 20, 2024
Язык: Английский
Процитировано
19
Small, Год журнала: 2025, Номер unknown
Опубликована: Фев. 5, 2025
Cellulose aerogels, as a novel class of carbon-based materials, exhibit immense potential in the field microwave absorption (MWA) due to their biocompatibility, low density, unique porous structure, and tunable architecture. However, development multi-dimensional components with specialized heterogeneous structures, which are based on cellulose remains significant challenge. This 0D/1D/3D structural configuration facilitates electromagnetic properties favorable impedance matching. The Schottky contact at ZnO/Ni interface, particular, induces strong interfacial polarization, design results multiple heterointerfaces. Density functional theory (DFT) calculations reveal that barrier causes band bending, facilitating directed migration electrons interface formation an internal electric field, thus significantly accelerating multipolar relaxation process. As anticipated, CCMC/ZnO@Ni aerogel exhibits minimum reflection loss (RLmin) value -64.0 dB 13.9 GHz thickness 2.0 mm, its effective bandwidth (EAB) reaches 4.9 GHz. work gives valuable guidance inspiration for materials composed dimensional gradient holds great application wave (EMW) attenuation.
Язык: Английский
Процитировано
12
Carbon, Год журнала: 2024, Номер unknown, С. 119653 - 119653
Опубликована: Сен. 1, 2024
Язык: Английский
Процитировано
11
Small, Год журнала: 2024, Номер unknown
Опубликована: Окт. 31, 2024
Abstract With the increasing application of electronic devices, absorption‐dominated electromagnetic interference shielding materials (EMISM) have garnered significant attention for preventing secondary pollution. In this study, polyethyleneimine (PEI)‐modified MXene (PEI@MXene) is fabricated and achieved its controlled distribution on pore walls polyarylene ether nitrile (PEN) porous films via phase inversion method (PIM) to obtain a closed skeleton (CPS–MPW). The resulting PEI@MXene/PEN composite film (CFx) exhibited EMIS efficiency (EMISE). Attributing strong interaction between PEI hydrophilic segment amphiphilic Pluronic F127, with hydrophobic anchored by PEN matrix, PEI@MXene directionally distributed CFx. addition, from cladding isolating it honeycomb pores, obtained CFx are insulators without forming conductive network. As result, these demonstrate EMISE highest SE T 41.2 dB coefficient A higher than 0.51. Further continuous hot pressing results in thinner denser an impressive specific up 750 cm −1 . successful fabrication CPS–MPW‐type provides reference developing preparing novel EMISM.
Язык: Английский
Процитировано
10
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Ноя. 26, 2024
Abstract The rapidly developing modern society has higher requirements for intelligent electromagnetic wave absorbing (EMA) materials than ever before. Herein, lightweight, multifunctional metal‐free carbon‐based aerogels (RCPs) with a longitudinal honeycomb porous framework and transverse neatly layered structure are obtained by heat‐treating graphene oxide/oxidized carbon nanotubes/hexachlorocyclotriphosphazene complex to simultaneously achieve the tunable EMA, flame retardancy, thermal insulation. anisotropic ensures properties of along tilt angles according environmental needs. effectively promotes multiple reflections scatterings waves compared structure, maximizing penetration inside material thus high EMA performance. optimized R 10 C 2 P‐4 exhibits minimum reflection loss in direction of−61.5 dB, while value is as low −22.4 dB direction. Furthermore, adequately inhibits spread heat, accompanied phosphorus species induced hexachlorocyclotriphosphazene pyrolysis, endowing good retardancy insulation conductivity 20.6 mW m −1 K direction, rather This work provides an ingenious insight into design materials, adapting flexibly various application requirements.
Язык: Английский
Процитировано
9
ACS Applied Nano Materials, Год журнала: 2025, Номер 8(4), С. 1912 - 1924
Опубликована: Янв. 21, 2025
Modern intelligent electronic devices require electromagnetic interference (EMI) shielding composite films with outstanding effectiveness and multifunctionality to adapt increasingly complex application environments. In this work, inspired by the morphology of cocoa trees, SiO2 is conceived as fruit one-dimensional nanomaterial silver nanowires (AgNWs) branches. Utilizing metal chelating properties polydopamine (PDA), SiO2@PDA@AgNWs were formed subsequently interwoven cellulose nanofibers (CNFs) create a nanocomposite film cocoa-tree-like structure, denoted CNFs-AgNWs-SiO2@PDA (C-A-SP). Conductive AgNWs induce conductivity losses, while contribute multiple scattering interfacial polarization losses. Therefore, C-A-SP thickness 59 μm demonstrates an impressive EMI (EMI SE) 76.91 dB exhibits specific SE (SSE/t) 15304.88 dB·cm2·g–1. Meanwhile, thermal conductivities in-plane out-plane reached 4.15 0.15 W/(m·K), respectively. Additionally, also excellent strain-sensing capability. This study provides valuable insights for designing fabricating lightweight, flexible, multifunctional efficient composites.
Язык: Английский
Процитировано
1
Polymers for Advanced Technologies, Год журнала: 2025, Номер 36(2)
Опубликована: Фев. 1, 2025
ABSTRACT The increasing proliferation of electronic devices and advanced communication networks has resulted in heightened electromagnetic interference (EMI), posing significant challenges both technological environmental contexts. Traditional EMI shielding materials, such as metals composite coatings, offer limited adaptability are unable to meet the dynamic demands modern systems. Recent advancements have introduced smart stimuli‐responsive materials for shielding, which provide real‐time tunability, thereby addressing limitations conventional static solutions. These leverage various mechanisms—such compressive tensile strains, phase transitions, shape memory effects, responses chemical agents, humidity, or crossover angle changes—to dynamically adjust their effectiveness (EMI‐SE). This review provides an in‐depth analysis recent progress technologies, highlighting tunable mechanisms, material compositions, applications. Furthermore, it discusses existing potential future research directions required advancement this technology. By enabling environments, present a promising solution telecommunications, wearable electronics, aerospace, defense sectors.
Язык: Английский
Процитировано
1
Ceramics International, Год журнала: 2024, Номер 50(22), С. 45919 - 45928
Опубликована: Авг. 29, 2024
Язык: Английский
Процитировано
5
Nanomaterials, Год журнала: 2024, Номер 14(15), С. 1291 - 1291
Опубликована: Июль 31, 2024
The increasing reliance on electronic technologies has elevated the urgency of effective electromagnetic interference (EMI) shielding materials. This review explores development and potential magnetite-incorporated one-dimensional (1D) carbon nanostructure hybrids, focusing their unique properties synthesis methods. By combining magnetite’s magnetic with electrical conductivity mechanical strength nanostructures such as nanotubes (CNTs) fibers (CFs), these hybrids offer superior EMI performance. Various techniques, including solvothermal synthesis, in situ growth, electrostatic self-assembly, are discussed detail, highlighting impact structure resulting composites. also addresses challenges achieving homogeneous dispersion nanofillers environmental economic considerations large-scale production. hybrid materials’ multifunctionality, enhanced strength, thermal stability, resistance, underscores suitability for advanced applications aerospace, electronics, protection. Future research directions focus optimizing processes exploring new configurations to further improve practical applicability.
Язык: Английский
Процитировано
4
Industrial Crops and Products, Год журнала: 2024, Номер 220, С. 119397 - 119397
Опубликована: Авг. 17, 2024
Язык: Английский
Процитировано
4