Article
Chemistry, Physical
Tao Wang, Geng Chen, Jiahao Zhu, Hang Gong, Limin Zhang, Hongjing Wu
Summary: This paper explores the importance of impedance matching and its calculation methods for absorber designers, pointing out existing issues in literature and explaining the factors influencing impedance matching effect. By simplifying the EMW absorption process to a transmission line model, the limitations of the RL calculation formula are revealed, and doubts about the validity of the quarter wavelength theory are scientifically explained.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Review
Materials Science, Multidisciplinary
Mingrui Han, Yunfei Yang, Wei Liu, Zhihui Zeng, Jiurong Liu
Summary: This article discusses the application of carbon-based electromagnetic wave absorbing materials in solving electromagnetic wave pollution. By designing a three-dimensional porous structure, the absorption effect of the material is improved. The researchers summarize the latest research progress and propose future challenges and prospects.
SCIENCE CHINA-MATERIALS
(2022)
Article
Chemistry, Physical
Panbo Liu, Sai Gao, Yi Wang, Ying Huang, Fengtao Zhou, Peizhou Liu
Summary: This study reported the fabrication of metal porous N-doped carbon absorbers using a coordination assembly strategy, which demonstrated excellent absorption performance through structure design and composition control.
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, Multidisciplinary
Zhangtao Shen, Yapei Zu, Yuqiu Chen, Jun Gong, Chao Sun
Summary: This study prepared porous carbon particles from wheat flour through pyrolysis and activation, and modified the surface and pores of carbon particles with nickel-rich particles of different morphologies through subsequent coprecipitation and electroless plating. The experimental results show that the chain-shaped morphology of nickel particles provides the highest dielectric loss, resulting in excellent electromagnetic wave absorption performance of the composite particles under specific conditions.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Yumei Luo, Pengfei Yin, Guanglei Wu, Limin Zhang, Guojuan Ma, Jian Wang, Xiyuan Sun, Guixian Bu
Summary: To eliminate the hazards caused by electromagnetic pollution, a microwave absorbing composite consisting of biomass-derived porous carbon and efficient magnetic component was prepared. The resulting material exhibited excellent microwave absorption properties due to the synergistic effect of magnetic and dielectric loss under decent impedance matching.
Article
Materials Science, Ceramics
M. Zeeshan Ashfaq, Aamna Ashfaq, Hongyu Gong, Nayab Akhtar, Muhammad Ahmad, Adil Saleem, Muhammad K. Majeed, Shan Wang, Rashid Iqbal, Yujun Zhang
Summary: Due to the increasing demand for electronic reliability and defense security, the research on broadband and lightweight microwave absorption materials has surged. Porous composites, with their ability to attenuate waves in a balanced manner and match impedance, have the potential to be high-performance absorbers. By using a solvothermal technique, FeSe2/rGO composites with a porous topology were generated and their electromagnetic properties can be finely tuned by varying the weight of rGO. The combination of porous structure and appropriate electromagnetic parameters improves impedance matching and attenuation capability, resulting in outstanding microwave absorption performance.
CERAMICS INTERNATIONAL
(2023)
Review
Nanoscience & Nanotechnology
Zhiwei Zhang, Zhihao Cai, Ziyuan Wang, Yaling Peng, Lun Xia, Suping Ma, Zhanzhao Yin, Yi Huang
Summary: The development of microwave absorption materials (MAMs) is crucial due to the threat electromagnetic waves pose to human health. Metal-organic frameworks (MOFs) have been highly studied for their diverse properties and ability to transform into porous carbon (PC). Researchers are exploring ways to improve absorption performance by coupling MOFs with other materials.
NANO-MICRO LETTERS
(2021)
Article
Chemistry, Physical
Wentong Yang, Xiansen Yang, Jianke Hu, Deyun Liu, Yubing Dong, Yaofeng Zhu, Yaqin Fu
Summary: The study shows that reasonable structural design can significantly enhance the microwave absorption performance of materials, promoting the application of microwave absorption materials.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Yinwei Wang, Pengfei Huang, Ngo Tran, Hamdi Ayed, Abir Mouldi
Summary: This study successfully prepared strontium hexaferrite samples with different morphologies and improved their electromagnetic absorption performance by mixing different morphologies.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Physical
Peng Miao, Weixing Chen, Weifeng Zhao, Jie Kong
Summary: Broadband microwave absorption materials have always been pursued. Hierarchical interfacial structure and impedance matching design are effective strategies for enhancing broadband microwave absorption performance. This study successfully synthesized novel La(OH)3 nanorods and fabricated hierarchical LaCoC-700 nanoparticles with superior microwave absorption performance through specific processes.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Rui Shao, Fang Wang, Shenglin Yang, Junhong Jin, Guang Li
Summary: Developing lightweight and wideband microwave absorbing composites is crucial for electromagnetic wave stealth and shielding applications. The study found that hollow porous carbon nanofiber (HPCNF) performs better as an absorbent compared to porous carbon nanofiber (PCNF), exhibiting lower reflection loss and a wider absorption band.
Article
Chemistry, Physical
Zhiwei Zhang, Zhihao Cai, Yi Zhang, Yaling Peng, Ziyuan Wang, Lun Xia, Suping Ma, Zhanzhao Yin, Ruofeng Wang, Yishu Cao, Zhuo Li, Yi Huang
Summary: MXene, as a new family of two-dimensional materials, with its unique structures and properties, is considered an appropriate candidate for high-performance microwave absorption materials, potentially playing important roles in both military and civilian fields.
Article
Engineering, Manufacturing
Fu Chen, Hui Luo, Yongzhi Cheng, Rundong Guo, Wentao Yang, Xian Wang, Rongzhou Gong
Summary: The composition, magnetic properties, and electromagnetic properties of the Ni/NiP@NC composite can be flexibly regulated by controlling the phosphorization degree, exhibiting excellent microwave absorption properties.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Review
Engineering, Multidisciplinary
Hongtao Guan, Qiuyue Wang, Xiaofen Wu, Jie Pang, Zhiyang Jiang, Gang Chen, Chengjun Dong, Lihong Wang, Chunhong Gong
Summary: This article reviews the recent progress in microwave absorption properties of biomass derived porous carbon (BPC)-based materials. It summarizes the general synthesizing approaches for carbon materials from various biomass sources, discusses the performance of pure BPC as a microwave absorber, and explores strategies to enhance the microwave absorption properties of BPC.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Psychology, Developmental
Zhong Zhao, Haiming Tang, Xiaobin Zhang, Zhipeng Zhu, Jiayi Xing, Wenzhou Li, Da Tao, Xingda Qu, Jianping Lu
Summary: This study used an eye tracker to record the gaze behavior of Chinese children with ASD and children with typical development during a conversation. The results showed that children with ASD paid less attention to the interlocutor's mouth and whole-face and more to the background. Moreover, gaze behavior varied with the conversational topic.
JOURNAL OF AUTISM AND DEVELOPMENTAL DISORDERS
(2023)
Article
Engineering, Aerospace
Xingyu Zhang, Wei Zhang, Weilin LI, Xiaobin Zhang, Tao Lei
Summary: This study investigates and compares the aerodynamic-propulsion interaction characteristics of a wing section with Distributed Electric Propulsion (DEP) aircraft using multiple electric motors. The experimental results verify the effectiveness of the computational fluid dynamic analysis method and the modeling method for the DEP configuration. The findings show that the DEP system can generate significant lift increase and drag reduction simultaneously, consistent with the potential benefit of Boundary Layer Ingestion (BLI) at low airspeed.
CHINESE JOURNAL OF AERONAUTICS
(2023)
Article
Psychology, Developmental
Zhong Zhao, Jiwei Wei, Jiayi Xing, Xiaobin Zhang, Xingda Qu, Xinyao Hu, Jianping Lu
Summary: This study utilized a machine learning approach to analyze the gaze behavior time series data in face-to-face conversations between children with autism spectrum disorder (ASD) and typically developing children. By combining behavior segmentation and a threshold classifier, the study achieved a high accuracy rate in automated screening of ASD.
JOURNAL OF AUTISM AND DEVELOPMENTAL DISORDERS
(2023)
Article
Astronomy & Astrophysics
Xiang-Lei Chen, A-Li Luo, Jian-Jun Chen, Rui Wang, Xiao-Bin Zhang, Wen Hou, Bo Qiu, Fang Zuo
Summary: Based on luminosity contributions, we have developed a spectroscopic modelling method to determine the atmospheric parameters of stars in binary systems. This method is specifically designed for spectra of binaries that exhibit double-lined features due to radial-velocity differences between the component stars. The method involves deriving orbital parameters and stellar radii, calculating luminosity contributions, constructing a synthesised double-lined spectra model, and ultimately deriving atmospheric parameters using the model-fitting method. Our method provides robust results for detached eclipsing binary systems observed in different orbital phases, particularly for multi-epoch double-lined spectra obtained from the Large sky Area Multi-Object Spectroscopic Telescope (LAMOST) Medium Resolution Survey (R similar to 7500). Additionally, this method can be applied to other spectroscopic data with varying resolutions as long as the systems are detached eclipsing binaries with nearly spherical stars.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Engineering, Multidisciplinary
Xiaobin Zhang, Chenxi Huang, Jia Shen
Summary: To reduce carbon emissions, distributed photovoltaics (PVs) are connected to customer sider to form microgrids (MGs). The economic optimization of MGs with high PV penetration is challenging due to the uncontrollability of PV output and frequent charging and discharging of energy storage system (ESS). This study establishes multi-factor collaborative energy optimization models for grid-connected and islanded MGs, and uses particle swarm optimization (PSO) to find optimal solutions under stable operating constraints to obtain day-ahead energy optimal management strategy (EOMS) for the MG.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2023)
Article
Computer Science, Information Systems
Yujun Wang, Lixi Wan, Zhengli Wang, Haitao Zhang, Yunqian Song, Xiaobin Zhang, Zhi Jin
Summary: This article presents an on-chip state-adjustable 8 GHz similar to 12 GHz low-noise amplifier (LNA) with improved current reuse topology and an innovative adaptive bias circuit. The chip provides adjustable gain, output power, and quiescent current on-chip and improves the comprehensive performance of X-band LNA. Fabricated using Win Semiconductors' 0.15 um InGaAs pHEMT E-mode process, the chip has a small area and achieves high performance.
Article
Nanoscience & Nanotechnology
Jialu Yang, Bochong Wang, Hanxin Liao, Jianyong Xiang, Congpu Mu, Anmin Nie, Kun Zhai, Tianyu Xue, Fusheng Wen
Summary: In this study, multifunctional flexible silver coated carbon nanofibers/bacterial cellulose (Ag/CNFs/BC) films were fabricated as flexible electromagnetic interference (EMI) shielding materials. The EMI performance of Ag/CNFs/BC films was greatly enhanced due to the improvement of conductivity. The Ag/CNFs/BC films also showed great multifunctional thermal applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Thermodynamics
Junjie Teng, Kai Wang, Shaolong Zhu, Shiran Bao, Xiaoqin Zhi, Xiaobin Zhang, Limin Qiu
Summary: This paper evaluates the application effects of three methods for converting hydrogen ortho-para hydrogen saturation on the hydrogen liquefaction process, as well as differences in temperature distribution, conversion heat consumption, and energy consumption indicators. The optimization results show that the continuous conversion method can complete the hydrogen liquefaction process with the lowest energy consumption, reducing energy consumption by 21.8% and 28.7% compared to adiabatic and isothermal conversion methods, respectively. Thermochemical analysis results show that the exergy consumption associated with dissipating conversion heat is lowest for the continuous conversion method, followed by adiabatic conversion, and the highest for isothermal conversion.
Article
Chemistry, Multidisciplinary
Kun Ye, Junxin Yan, Lixuan Liu, Penghui Li, Zhipeng Yu, Yang Gao, Mengmeng Yang, He Huang, Anmin Nie, Yu Shu, Jianyong Xiang, Shouguo Wang, Zhongyuan Liu
Summary: Controllably grown hexagonal magnetic semiconducting alpha-MnTe nanoribbons with a highly anisotropic (100) surface exhibit outstanding photoresponse in a broadband range from ultraviolet to near infrared, along with short response times, excellent stability, and high sensitivity to polarization. These results demonstrate the promising potential of 2D alpha-MnTe nanoribbons as a platform for designing next-generation polarization-sensitive photodetectors.
Article
Physics, Applied
Bochong Wang, Yongbing Li, Xiang Li, Congpu Mu, Jianyong Xiang, Shijun Yuan, Anmin Nie, Kun Zhai, Tianyu Xue, Fusheng Wen, Zhongyuan Liu
Summary: Elemental doping is a feasible strategy to improve the Curie temperature and catalytic performance of two-dimensional magnetic materials. In this study, Ni-doped (Fe1-xNix)(5)GeTe2 single crystals were successfully grown and the amount of Ni doping could be controlled precisely. Increasing the amount of Ni doping resulted in higher long-range ferromagnetic ordering temperature, with (Fe0.7Ni0.3)(5)GeTe2 showing the highest Curie temperature Tc = 492.73 K. Doping Ni atoms enhanced the oxygen evolution reaction (OER) activities of liquid phase exfoliated (Fe1-xNix)(5)GeTe2 nanoflakes, with the (Fe0.9Ni0.1)(5)GeTe2 nanoflakes exhibiting the best catalytic performance.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Keliang Qiu, Jingpeng Hou, Shuai Chen, Xiang Li, Yonghai Yue, Bo Xu, Qi Hu, Limin Liu, Zhenyu Yang, Anmin Nie, Yufei Gao, Tianye Jin, Jing Wang, Yanhong Li, Yanbin Wang, Yongjun Tian, Lin Guo
Summary: The room-temperature self-healing behavior of a nanotwinned diamond composite is quantitatively evaluated and found to stem from both the formation of nanoscale diamond osteoblasts and the atomic interaction transition from repulsion to attraction.
Article
Nanoscience & Nanotechnology
Dan Guo, Congpu Mu, Qian Liu, Bochong Wang, Jianyong Xiang, Anmin Nie, Kun Zhai, Yu Shu, Tianyu Xue, Fusheng Wen, Zhongyuan Liu
Summary: With the rapid development of electronic components, multifunctional EMI-shielding materials have gained significant attention. In this study, flexible ANF/PPy composite films were prepared using a simple vacuum filtration method. The composite films exhibited excellent EMI shielding performance, wearable sensing, Joule heating, and photothermal conversion. The ANF/PPy-4 composite film, with a thickness of 46 μm, demonstrated outstanding EMI shielding effectiveness of 35 dB in the frequency range of 6-26.5 GHz. It also displayed superior mechanical properties, with a tensile strength of 132 MPa and a fracture strain of 5.2%. Additionally, the ANF/PPy composite film could monitor human motions and achieve high temperatures through photothermal conversion. These multifunctional films have great potential for applications in EMI shielding, wearable sensing, and personal thermal management.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Houjian Zhou, Hao Ding, Xin Gao, Zhiwei Shen, Kun Zhai, Bochong Wang, Congpu Mu, Fusheng Wen, Jianyong Xiang, Tianyu Xue, Yu Shu, Lin Wang, Zhongyuan Liu
Summary: This study investigates the spin-driven magnetoelectric effects of the perovskite-like metal-organic framework [CH3NH3][Co(HCOO)(3)]. The magnetic properties and crystal structure of [CH3NH3][Co(HCOO)(3)] under high pressure are studied. It is found that high pressure can alter the crystal structure and magnetic properties of perovskite type MOF materials.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
