Review
Chemistry, Multidisciplinary
Seong-Hwang Kim, Seul-Yi Lee, Yali Zhang, Soo-Jin Park, Junwei Gu
Summary: This review provides a comprehensive overview of stealth technology and radar absorbing materials (RAMs), with a particular focus on carbon-based materials. It discusses the history and basic concepts of stealth technology and RAMs, and explores recent advancements and strategies in carbon-based RAMs for electromagnetic attenuation. The review highlights the potential of carbon-based RAMs for practical applications and emphasizes the need for further research to enhance their performance.
Article
Materials Science, Multidisciplinary
Zhi Zhang, Yilu Xia, Yao Yao, Fan Wu, Zhongwei Zhang, Zhiqian Yang, Shuo Wang, Pin Zhang, Wenke Zhou
Summary: The MoO3@Fe-2(MoO4)(3)/rGO composite material was studied for its chemical composition, micromorphology, and absorption performance. The optimal composite showed minimal reflection loss at 14.4 GHz and an effective absorption bandwidth of 5.8 GHz.
Article
Materials Science, Ceramics
Peng Wu, Wenting He, Hongbo Guo
Summary: A novel microwave absorbing material, sodium cobaltates (Na0.78CoO2), with a lamellar structure, was synthesized and showed good electromagnetic attenuate property. The composite with 50 wt% Na0.78CoO2 and 50 wt% paraffin achieved a minimum reflection loss (RL) of around -51.7 dB at a frequency of 8.2 GHz when the thickness was about 2.41 mm. Its effective absorbing bandwidths (RL <-10 dB) were in the range of 12.5 to 15.6 GHz for a sample thickness of around 1.5 mm. The electromagnetic attenuation mechanisms of the composite were related to conductive loss, multiple reflection loss, and dipole or interfacial polarization loss.
CERAMICS INTERNATIONAL
(2022)
Review
Chemistry, Physical
Dheeraj Gunwant, Ajitanshu Vedrtnam
Summary: This article discusses the development of carbon fiber-based microwave absorbing materials, including four different types of carbon fiber-based materials and the parameters affecting their microwave absorption properties. The research points out that optimal material performance can be achieved by manipulating factors such as geometry, concentration, etc.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Hafiz Shehbaz Ahmad, Tanveer Hussain, Yasir Nawab, Shuaib Salamat
Summary: In this study, carbon fiber reinforced unidirectional composite (CFRC) structures were developed by adding various dielectric and magnetic nanofillers at a 2% loading concentration of the weight of the matrix. The microwave absorption properties were investigated in a wide frequency range, and it was found that the absorption increased with frequency, with the maximum value observed in the X frequency range (8.2-12.4 GHz)。
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Muhammad Misbah Muhammad Zulkimi, Raba'ah Syahidah Azis, Ismayadi Ismail, Nurhidayaty Mokhtar, Mehmet Ertugrul, Mohd Nizar Hamidon, Intan Helina Hasan, Yasar Ozkan Yesilbag, Fatma Nur Tuzluca, Gokhan Ozturk, Ugur Cem Hasar
Summary: A highly feasible method to achieve a broad bandwidth of radar absorbing materials (RAM) is reported in this study. Magnetic Sr-hexaferrite was prepared using a conventional sintering process and hybridized with coiled carbon nanotubes (CNT) via a chemical vapour deposition (CVD) method. The permittivity was tremendously increased after the hybridization, enhancing the RL. Multiple relaxations of dielectric and eddy current losses were responsible for the enhancement. The report is significant for future research on obtaining desired broad bandwidth RAM.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Materials Science, Ceramics
Xiaojun Chen, Hongyang Liu, Dechao Hu, Huaqing Liu, Wenshi Ma
Summary: Carbon nanotubes have emerged as a potential candidate to address issues related to electromagnetic pollution and interference, offering advantages like high dielectric loss and remarkable thermodynamic stability. Recent advances in CNTs-based microwave absorbing materials have shown promising prospects, particularly in the development of composites for better microwave absorption capabilities.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Composites
T. Haritha, K. Ramji
Summary: Radar absorbing structures (RAS) containing MnZn ferrite/Polyaniline coated multi-walled carbon nanotubes were fabricated and characterized in this study, showing promising microwave absorption behavior in the X-band frequency range. Different concentrations of ferrite particles and PCNTs were used to investigate their microwave absorption behavior, with minimum reflection loss estimated at -29.06 dB and -33.07 dB for ferrite fixed and PCNT fixed samples, respectively. Mechanical behavior of the structures was also examined.
PLASTICS RUBBER AND COMPOSITES
(2022)
Article
Engineering, Electrical & Electronic
Hongliang Luo, Hua Hao, Qinghu Guo, Minghe Cao, Zhonghua Yao, Hanxing Liu
Summary: In this study, Sr4Fe6O13 ferrites were synthesized by solid-state method and their high-frequency microwave absorption performance was investigated. The addition of carbon nanotubes (CNTs) into Sr4Fe6O13 ferrites resulted in the formation of Sr4Fe6O13/CNTs composites with a network structure, which improved the high-frequency dielectric performance and microwave absorption capacity. The Sr4Fe6O13/CNTs composites achieved the strongest absorption capacity (- 51 dB) at a frequency of 15 GHz with a thickness of 1.2 mm when the mass ratio of Sr4Fe6O13 and CNTs was 20. These results suggest that Sr4Fe6O13/CNTs composites have a potential application in high-frequency communication devices for suppressing electromagnetic interference.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Xihua Wang, Jing Qin, Jin Cui, Li Huang, Ye Yuan, Yibin Li
Summary: In this study, reduced graphene oxide/carbon nanofiber (rGO/CNF) based composite fabrics with spider web-like structure were successfully synthesized by electrostatic spinning technique. These composite fabrics demonstrate stable microwave absorbing performance, excellent mechanical properties, and heat insulation properties.
ADVANCED FIBER MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Ravindra N. Kambale, Krishnakumar M. Sagar, Sunil M. Patange, Sagar E. Shirsath, K. G. Suresh, Vaishali A. Bambole
Summary: Nd3+-substituted Ni-Zn ferrite nanoparticles were synthesized using the sol-gel autocombustion technique, and a nanocomposite with polyaniline (PANI) was prepared through in situ polymerization. The microwave absorbing properties of both the ferrite nanoparticles and the ferrite/PANI nanocomposite were investigated, showing that the nanocomposite has excellent absorption properties for incident microwaves.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2022)
Article
Mechanics
Sang Min Baek, Won Jun Lee
Summary: Functional composites with nanofillers are used to enhance radar absorbing structures (RAS), with the relative permittivity of RAS substrate measured under various environmental conditions. Maximum likelihood estimation is used to determine probability distributions of dielectric materials for RAS, and RBDO is applied for reliability-based design optimization. RBDO results in a significant reduction in failure probability despite a slight increase in total thickness.
COMPOSITE STRUCTURES
(2021)
Article
Materials Science, Composites
Mohammad Danesh, Hamid Beheshti, Mohammad Heidari-Rarani
Summary: The main challenge in the design of radar-absorbing composite structures is the variety of parameters affecting the absorbing performance. This study investigates the impact of different parameters, including reinforcing materials, geometric parameters, and manufacturing methods, on the radar-absorbing feature of composite structures.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2023)
Article
Materials Science, Multidisciplinary
Siyao Guo, Yunfeng Bao, Ying Li, Hailong Guan, Dongyi Lei, Tiejun Zhao, Baomin Zhong, Zhihong Li
Summary: In this work, hierarchical CoFe alloy/porous carbon@carbon nanotubes (CoFe/PC@CNTs) nanocomposites were developed through revising the proportion of Fe2+ in the metal-organic frameworks (MOFs) precursor and one-step simple pyrolysis process. The nanocomposites exhibited excellent electromagnetic wave absorption (EMA) capability, with the optimized composition achieving a minimum reflection loss (RLmin) value of -68.94 dB at 13.69 GHz and an effective absorption band (EAB) reaching up to 9.14 GHz.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Shuang Yang, Xianxian Sun, Shasha Wang, Yuanhao Ning, Ye Yuan, Weilong Yin, Yibin Li
Summary: Lightweight and low-cost carbon materials are considered promising microwave absorbing materials. This study introduces a high-quality microwave-absorbing nanocomposite made from coconut shell and magnetic material, which exhibits superior microwave absorption due to the synergy of dielectric-magnetic effect and enhanced interfacial polarization.
