Current progress and frontiers in three-dimensional macroporous carbon-based aerogels for electromagnetic wave absorption: A review DOI
Hanming Ding, Bo Hu, Yuejun Wang

et al.

Nanoscale, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

In the present era of rapid development in electronic information technology, electromagnetic (EM) pollution is increasingly receiving widespread concerns due to its potential threats devices and human health. EM wave absorbing materials (EWAMs) play an important role preventing exposure waves because they can attenuate incident through sustainable energy dissipation. Among numerous EWAMs developed recent years, three-dimensional (3D) macroporous carbon-based aerogels have been considered one most promising candidates as high-performance not only their flexible component options beneficial synergies between different components but also for open skeletons, which provide a unique structural contribution accelerating consumption waves. this review, we focus on current progress 3D toward absorption highlight strategies preparation, including biomass transformation, template method, hydrothermal/solvothermal self-assembly, polymer foaming, metal-organic frameworks (MOFs) topological transformation. Moreover, discuss analyze effects composition, optimization engineering performances. After comprehensive evaluation performance aerogels, further propose some challenges perspectives envision broad application prospects future.

Language: Английский

Hetero‐Dimensional Micro‐Nano Architectures Toward Electromagnetic Devices and Hybrid Energy Transport DOI
Qi Zheng, Jingqi Wang, Wen‐Qiang Cao

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 14, 2024

Abstract Human spaceflight, lunar exploration projects, and interstellar travel are the grand visions of human universe. However, energy sustainability these projects is a concern. Electromagnetic functional materials devices expected to fulfill their potential in electronic communication utilization. Herein, hetero‐dimensional micro‐nano architectures composed Cu 3 Se 2 microspheres reduced graphene oxide (rGO) sheets fabricated for first time by sacrificial template method, anion substitution engineering, electrostatic adsorption, reduction‐oxidation reaction. Based on excellent electromagnetic response composites, they exhibit strong ultra‐wide microwave absorption ability with effective bandwidth (EAB) reaching 8.24 GHz at thickness 2.2 mm. In addition, an metamaterial EAB ≈13.5 proposed, exhibiting significant properties. More significantly, composites can be used construct range devices: spiral antenna adjustable return loss gain, maximum gain up 2.5 dBi; microstrip power divider that efficiently split input signal into four equal parts output it; hybridized transport device convert store energy. This work provides new inspiration protection, communication, development.

Language: Английский

Citations

21
In-situ growth of carbon nanotubes for the modification of wood-derived biomass porous carbon to achieve efficient Low/Mid-Frequency electromagnetic wave absorption DOI
Jiyuan Xiao, Bo Wen, Xiaofeng Liu

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 676, P. 33 - 44

Published: July 14, 2024

Language: Английский

Citations

12
Carbon Nanocoils‐Assisted Formation of Tunable Pore Graphene Aerogels for Lightweight Broadband Microwave Absorption, Thermal Insulation, and Antifreeze Devices DOI Open Access
Yuan Guo, Yuping Duan,

Shude Gu

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 9, 2025

The rational design of the aerogel pore structure facilitates maximum excitation materials physicochemical properties, which enables modulation their electromagnetic performance. However, controllable adjustment remains a significant challenge. Here, freeze-thawing process and thermal annealing treatment are introduced to prepare reduced graphene oxide (rGO)/iron (Fe)/carbon nanocoil (CNC) aerogels. composite aerogels with tunable obtained by adjusting content CNC. Both experiments simulations confirm that addition CNC presents continuous 3D conductive network, improves conductivity loss polarization loss. Meanwhile, amorphous carbon within causes structural defects, further enhance Therefore, rGO/Fe/CNC optimized has lightweight efficient wave absorption. At an ultra-low filling ratio 0.8 wt%, effective absorption bandwidth reaches 7.9 GHz optimal reflection is -43.5 dB. In addition, due network interwoven temperature stability nanomaterials, have excellent insulation, antifreeze performance, hydrophobicity. This multifunctional absorber great potential for application in complex changing environments.

Language: Английский

Citations

0
Controlling of pseudo-graphite proportion in amorphous carbon to enhance dipole polarization for microwave absorption DOI
Yuning Shi, Xueai Li,

Jinjin Yang

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137422 - 137422

Published: March 1, 2025

Language: Английский

Citations

0
Resonant-type multifunctional device using organic piezoelectrics for detecting differential pressure and acceleration DOI Creative Commons
Yuki Noda,

K. Matsubara,

Naomi Toyoshima

et al.

Applied Physics Letters, Journal Year: 2025, Volume and Issue: 126(6)

Published: Feb. 10, 2025

In this study, a multifunctional device was developed using the organic piezoelectric material polyvinylidene fluoride (PVDF) to detect mechanical operations. This utilizes mechanism in which resonance of element structure is excited and detected PVDF. enabled proposal principle that can allow detection various physical quantities, such as differential pressure acceleration. The low pressures up 1.5 kPa with sensitivity −0.19 Hz/Pa. Additionally, it measure acceleration output linearity cross-axis sensitivity. advantageous because evaluate both common sensor measurement methods, be manufactured at room temperature inexpensive materials. It holds potential for applications maintenance industrial machinery monitoring natural disasters.

Language: Английский

Citations

0
Multidimensional Co‐Design and Performance‐Mechanism Study of Novel Graphdiyne Composites with Microwave Absorbing Structures DOI

Yihao Fan,

Bingqian Zhou, Haowen Xing

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

Graphdiyne (GDY), an emerging member in the carbon material family, possesses abundant chemical bonds, extended conjugated systems, and superior charge carrier mobility, establishing it as a promising novel microwave absorption material. Capitalizing on these attributes, this work, flower-like GDY@Cu2O composite with unique nanowall structure is prepared by one-step microemulsion method. Remarkably, temperature-mediated enhancement of electron transport coupled induced multipolarization synergistically boosts performance. The optimal specimen (GDY@Cu2O-700) achieves effective bandwidth (EAB) 6.1 GHz at 2.2 mm matched thickness, minimum reflection loss -49.9 [email protected] GHz. Furthermore, metamaterial designed millimeter scale using GDY@Cu2O-700 absorbing functional component. Following optimization via 3D electromagnetic simulation software, demonstrates ultra-broad EAB spanning 34.1 range 2-40 This pioneering study delineates wave characteristics GDY-based microspheres GDY primary constituent provides valuable reference for designing innovative wave-absorbing materials.

Language: Английский

Citations

0
Building Thermal-Conduction Nanochannels in Composite Electromagnetic Interference Shielding Film for Electromagnetic Heat Management DOI

Rui Wang,

Lu Ju, Xiangyu Meng

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 4, 2025

In the 6G era, miniaturized and highly integrated wearable communications devices require electromagnetic materials with efficient thermal-management capability to mitigate interference (EMI) heat accumulation. Herein, we present a facile strategy for conducting by constructing directional thermal-conduction nanochannels within layer-by-layer EMI shielding film. This composite film consists of polyacrylonitrile/boron nitride nanosheets@polydopamine nanofibers covered an layer based on MXene sheets. Compared traditional in which dissipates randomly, one-dimensional fibrous structure can offer dissipation pathway. Under high-power microwave irradiation, it exhibits significantly lower temperatures, ensuring robust durable communication performance without overheating. The thin (0.43 mm thickness) achieves impressive specific surface efficiency 29,400 dB·cm2·g-1 at 18-24 GHz, effectiveness (SE) 88 dB its counterpart. addition, flexible maintains high SE after 10,000 bending times. Its lightweight, flexible, design makes suitable applications various environments. thermally conductive provides rapid effective signal systems, showcasing great potential thermal management next-generation technologies.

Language: Английский

Citations

0
Sugar blowing induced honeycomb porous mullite powders with low thermal conductivity and thermal stability DOI
Zhongyan Wang, Anran Guo, Liwen Yan

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180615 - 180615

Published: April 1, 2025

Language: Английский

Citations

0
Current progress and frontiers in three-dimensional macroporous carbon-based aerogels for electromagnetic wave absorption: A review DOI
Hanming Ding, Bo Hu, Yuejun Wang

et al.

Nanoscale, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

In the present era of rapid development in electronic information technology, electromagnetic (EM) pollution is increasingly receiving widespread concerns due to its potential threats devices and human health. EM wave absorbing materials (EWAMs) play an important role preventing exposure waves because they can attenuate incident through sustainable energy dissipation. Among numerous EWAMs developed recent years, three-dimensional (3D) macroporous carbon-based aerogels have been considered one most promising candidates as high-performance not only their flexible component options beneficial synergies between different components but also for open skeletons, which provide a unique structural contribution accelerating consumption waves. this review, we focus on current progress 3D toward absorption highlight strategies preparation, including biomass transformation, template method, hydrothermal/solvothermal self-assembly, polymer foaming, metal-organic frameworks (MOFs) topological transformation. Moreover, discuss analyze effects composition, optimization engineering performances. After comprehensive evaluation performance aerogels, further propose some challenges perspectives envision broad application prospects future.

Language: Английский

Citations

1