Article
Chemistry, Physical
Konghu Tian, Yanan Huang, Jing Wang, Chao Zhang, Ruiwen Shu, Zhihong Chen, Xiaowei Liu, Yufei Li, Lixin Xu
Summary: The demand for flexible electromagnetic wave absorbing materials has increased, highlighting the importance of designing efficient and adaptable EMW absorbing materials. In this study, flexible Co3O4/carbon cloth (Co3O4/CC) composites with high EMW absorption properties were prepared via a static growth method and annealing process. The composites exhibited remarkable properties, with the minimum reflection loss (RLmin) and maximum effective absorption bandwidth (EAB, RL & LE; -10 dB) of -54.43 dB and 4.54 GHz, respectively. The study proposes a promising approach to preparing flexible Co3O4/CC composites with significant reference value for the field of flexible EMW.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Ceramics
Peng He, Meng-Jiao Zheng, Qi Liu, Zi-Yi Liu, Ru-Zhong Zuo, Wen-Qiang Cao, Jie Yuan, Mao-Sheng Cao
Summary: MXenes are highly sought-after for their exceptional electrical conductivity, mechanical stability, and other properties, making them the leading materials for EM wave absorption. The crystal and electronic structures of MXene hybrids, as well as their EM functions, are systematically arranged and their relationship revealed. Major challenges and future directions in this rapidly expanding field are proposed.
CERAMICS INTERNATIONAL
(2022)
Article
Nanoscience & Nanotechnology
Haitang Yang, Yun Tan, Yanwei Zhang, Yihang Xiong, Gaosheng Nie, Heng Luo, Pei He, Junliang Yang, Xiangguo Zhao, Jinchao Tong, Yi Zhang
Summary: Maintaining dynamic microwave synchronization between a target and its background is crucial for achieving electromagnetic invisibility in real environments. This study introduces a paradigmatic example of ultra-elastic films made of graphene-functionalized ionic gel, which exhibit tunable microwave-absorbing behaviors. By changing the shape of a 3D wrinkled structure with ridge walls of moderate impedance, the reflected wave can be minimized and energy attenuation can be promoted. Experimental and finite element simulations demonstrate an optimal RL value of -43.6 dB and a valid regulatory amplitude of 41.5 dB, covering a range from microwave-absorbing to shielding state.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Multidisciplinary
Ming Qin, Limin Zhang, Hongjing Wu
Summary: Comprehensive views on dielectric loss mechanisms provide important guidance for understanding the attenuation behavior of materials. Current researches focus more on materials synthesis rather than in-depth mechanism study. Therefore, further research on in-depth mechanisms, emphasis on new dielectric loss mechanisms, and new modulation strategies are needed to achieve simple and effective EM wave attenuation behavior modulation.
Article
Chemistry, Multidisciplinary
Yue Liu, Xinfeng Zhou, Zirui Jia, Hongjing Wu, Guanglei Wu
Summary: Polymeric metal-organic framework (MOF)-derived composites are functional materials with exceptional chemical homogeneity, designable components, and adjustable pore size. This study presents the design of laminate-stacked sphere-shaped trimetallic CoNiMn-MOFs and the successful synthesis of CoNi/MnO@C composites, which exhibit excellent electromagnetic wave-absorbing performance. The modulation of oxygen and Mn vacancies through the introduction of heteroatoms and changes in annealing temperature contributes to the improvement of electromagnetic loss capacity.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Zhu Zhang, GeHuan Wang, Weihua Gu, Yue Zhao, Shaolong Tang, Guangbin Ji
Summary: In this study, high-performance electromagnetic wave absorption and shielding materials were developed by preparing interweaving cellulose/polyaniline nanofiber (CPF) composite through electrospinning technology and in-situ polymerization process. The CPF exhibited excellent EM absorption performance and EMI shielding capability, with adjustable electrical conductivity and lightweight fabric characteristics such as mechanical flexibility, breathability, and wash resistance, making it highly suitable for wearable devices.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Wei Hou, Qingwei Liao, Mengze Wu, Kexuan Liao, Yujun Song, Lei Qin
Summary: Designing multihierarchical electromagnetic wave-absorbing composites using metal-organic frameworks (MOFs) and in situ pyrolysis is an effective approach for enhancing absorption performance. A new magnetic carbon composite (gamma-Fe2O3 @N-rGO/MWCNT) with multihierarchical structure was prepared via an in situ anisotropic-oriented growth strategy. The composite exhibited exceptional absorption performance with a minimum reflection loss (RLmin) of -59.2 dB at 5.51 GHz, and the strategy used in this work has great potential for producing various multihierarchical nanocomposites with abundant absorption effects.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Xuyang Sun, Rui Guo, Bo Yuan, Hongzhang Wang, Minghui Duan, Yaxiong Yang, Xiyu Zhu, Xuelin Wang, Sen Chen, Jiashu Cheng, Yubo Fan, Jing Liu
Summary: This study proposes an implantable electrode with tunable stiffness for wirelessly enhanced electromagnetic therapy, which can achieve hyperthermia for tumor growth inhibition and prolong survival time. The electrode, fabricated by magnetic liquid metal, demonstrates excellent biocompatibility and biosafety, providing broad application scenarios in tumor therapeutics and nervous system monitoring and stimulation.
APPLIED MATERIALS TODAY
(2022)
Article
Materials Science, Multidisciplinary
Lu Feng, Wanchong Li, Yan Wang
Summary: Researchers in this study utilized a metamaterial designing method to optimize FeSiAl alloy for improved electromagnetic wave absorption properties. By adjusting the macrostructural size, absorption performance could be easily regulated, resulting in a well-performing broadband FeSiAl metamaterial.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Chemistry, Physical
Kai Yang, Lixia Long, Yaning Feng, Yu Wei, Tianen Wu, Zhenguo Gao, Jiaoqiang Zhang
Summary: In this study, Ag/ZnO@C hybrid materials with metal-semiconductor heterostructures were synthesized using adjustable cation exchange. The electromagnetic response and absorption mechanism of the materials were systematically investigated. The results showed that the product exhibited low reflection loss and wide absorption bandwidth, providing guidance for the design of hybrid structural MAMs using phase transformation MOFs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Huili Yang, Xiang Zhang, Zhiqiang Xiong, Zhongjing Shen, Chongbo Liu, Yu Xie
Summary: This study successfully addresses the impedance mismatch issue of carbon-based materials in the field of microwave absorption by synthesizing Cu2O@nanoporous carbon composites. This results in superior ultrabroad-bandwidth absorptivity, offering a new opportunity for obtaining ultrabroad effective bandwidth.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Mingrui Han, Runa Zhang, Qilei Wu, Na Wu, Jiurong Liu
Summary: The rapid development of communication technology and electronic industry has caused serious electromagnetic interference (EMI) and electromagnetic wave (EMW) pollution. The high price, density, and corrosion of traditional metal or magnetic EMI shields and EMW absorbers have been criticized. Aerogels, known for their low density and efficient dissipation of electromagnetic energy, have become a promising solution. Biopolymers, including cellulose, lignin, chitin/chitosan, and alginate, have breathed new life into aerogels for high-efficiency EMW shielding and absorbing. The review highlights the contributions, challenges, and future prospects of biopolymers in the field of aerogels for EMI shields and EMW absorbers.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Yilin Huang, Weidong Xue, Xingwang Hou, Rui Zhao
Summary: This paper discusses the excellent broadband microwave absorption performance of Cu/CuO/carbon nanosheet composites, which have a unique ripple-like structure at a cracking temperature of 900 degrees Celsius, promoting hierarchical interfacial polarization. The prepared material exhibits a maximum absorption bandwidth of 4.48 GHz at an exceedingly thin thickness of 1.7 mm and a maximum reflection loss of -25.3 dB at a thickness of 2 mm, making it a relatively ideal material for electromagnetic wave absorption.
Article
Construction & Building Technology
Hongda Guo, Ziqing Tang, Qing Liu, Jianyu Xu, Miaomiao Wang, Rui Liang, Guoxing Sun
Summary: This study investigates the use of a new villus-like nanocomposite hydrogel (V-NC gel) as an additive for underwater cement grout, significantly improving its anti-washout performance. The villus-like structure of V-NC gel and its chemical interaction with cement particles are the key factors contributing to its effectiveness in enhancing the anti-washout performance.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Multidisciplinary
Ming Chang, Zirui Jia, Shuangqiao He, Jixi Zhou, Shuo Zhang, Mengli Tian, Bingbing Wang, Guanglei Wu
Summary: This study presents a novel NiS/MoS2/Ti3C2Tx hybrid system with a unique multilayer-scale structure, which exhibits excellent absorption performance through intense dielectric loss and multiple reflection, achieving wide effective absorption bandwidth and minimal reflection loss.
COMPOSITES PART B-ENGINEERING
(2021)
