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Recent developments in three-dimensional Zn metal anodes for battery applications

InfoMat 2024年第1期6卷 1-30页

作者： Jianyu Chen Yizhou Wang Zhengnan Tian Jin Zhao Yanwen Ma Husam N.Alshareef State Key Laboratory of Organic Electronics and Information Displays(KLOEID)and Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials(IAM)Nanjing University of Posts&Telecommunications(NUPT)Nanjingthe People's Republic of China Materials Science and Engineering King Abdullah University of Science and Technology(KAUST)ThuwalSaudi Arabia Suzhou Vocational Institute of Industrial Technology Suzhouthe People's Republic of China

Aqueous zinc(Zn)ion batteries(AZIBs)are regarded as one of the promising candidates for next-generation electrochemical energy storage systems due to their low cost,high safety,and environmental ***,the commercialization of AZIBs has been severely restricted by the growth of dendrite at the Zn metal *** the planar-structured Zn anodes into threedimensional(3D)structures has proven to be an effective way to modulate the plating/stripping behavior of Zn anodes,resulting in the suppression of dendrite *** review provides an up-to-date review of 3D structured Zn metal anodes,including working principles,design,current status,and future *** aim to give the readers a comprehensive understanding of 3D-structured Zn anodes and their effective usage to enhance AZIB performance.

关键词： 3D metal anodes aqueous Zn ion batteries dendrite suppression Zn dendrite Zn metal anodes

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Deformation Evolution and Perceptual Prediction for Additive Manufacturing of Lightweight Composite Driven by Hybrid Digital Twins

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Chinese Journal of Mechanical engineering 2024年第5期37卷 94-112页

作者： Jinghua Xu Linxuan Wang Mingyu Gao Chen Jia Qianyong Chen Kang Wang Shuyou Zhang Jianrong Tan Shaomei Fei State Key Lab of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310058China Zhejiang Key Lab of Advanced Manufacturing Technology School of Mechanical EngineeringZhejiang UniversityHangzhou 310058China State Key Laboratory of Materials Processing and Die and Mould Technology Huazhong University of Science and TechnologyWuhan 430074China Institute of Design Engineering Zhejiang UniversityHangzhou 310058China School of Mechanical and Aerospace Engineering Nanyang Technological UniversitySingapore City 639798Singapore

This paper proposes a deformation evolution and perceptual prediction methodology for additive manufacturing of lightweight composite driven by hybrid digital twins(HDT).In order to improve manufacturing quality of irregular lightweight composite through boosting conceptual design in aeronautic and aerospace engineering,the HDT meaning hybridization of physical and digital domains,including deformation and energy efficiency can be built,where the essential parameters can be perceptually predicted in advance,by virtue of the fusion of physical sensors and digital *** long short term memory(LSTM)can be employed to void vanishing gradient problem and improve predicting precision via Recurrent Neural Networks,thereby laying a foundation for the *** diverse manufacturing requirements of different regions are integrated into the parameters designing phase by attaching region weights confirmed via empiricism and in-service *** effects of slicing strategy and external support structures on manufacturing quality are considered from the perspective of improving dimensional *** manufacturing efficiency and comprehensive costs are accounted as consideration factors,which are perceptually predicted via *** designed manufacturing parameters through HDT were virtually examined by evaluating the deformation and equivalent stress distributions of fabricated lightweight component with composite material through AM process *** physical experiments were conducted to verify the HDT-based pre-designing and optimization method of manufacturing parameters via fused deposition modeling(FDM).The energy consumption of actual manufacturing process was measured via digital power meter and applied to evaluate accuracy of perceptual prediction *** dimensional accuracy and distortion distribution of the manufactured lightweight prototype made with composite material were measured through the coordinate measuring machine(CMM)and 3D optica

关键词： Deformation evolution Perceptual prediction Lightweight composite Hybrid digital twins(HDT) Long short term memory(LSTM)

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Improvement of titanium alloy TA19 fatigue life by submerged abrasive waterjet peening:Correlation of its process parameters with surface integrity and fatigue performance

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Chinese Journal of Aeronautics 2024年第1期37卷 377-390页

作者： Gongyu WANG Shulei YAO Yuxin CHI Chengcheng ZHANG Ning WANG Yalong CHEN Rongsheng LU Zhuang LI Xiancheng ZHANG Key Laboratory of Pressure Systems and Safety Ministry of EducationSchool of Mechanical and Power EngineeringEast China University of Science and TechnologyShanghai 200237China AECC Commercial Aircraft Engine Co.LTD Shanghai Engineering Research Center for Commercial Aircraft EngineShanghai 201108China

Submerged abrasive waterjet peening(SAWJP)is an effective anti-fatigue manufacturing technology that is widely used to strengthen aeroengine *** study investigated the correlation of SAWJP process parameters on surface integrity and fatigue life of titanium alloy *** with different water pressures and standoff distances(SoDs)was conducted on the TA19 *** surface integrity of the specimens before and after SAWJP with different process parameters was experimentally studied,including microstructure,surface roughness,microhardness,and compressive residual stress(CRS).Finally,fatigue tests of the specimens before and after SAWJP treatment with different process parameters were carried out at room *** results highlighted that the fatigue life of the TA19 specimen can be increased by 5.46,5.98,and 6.28 times under relatively optimal process parameters,which is mainly due to the improved surface integrity of the specimen after SAWJP ***,the fatigue life of specimens treated with improper process parameters is decreased by 0.55 to 0.69 times owing to the terrible surface roughness caused by the material *** work verifies that SAWJP can effectively improve the surface integrity and fatigue life of workpieces,and reveals the relationship between process parameters,surface integrity,and fatigue life,which provides support for the promotion of SAWJP in the manufacturing fields.

关键词： Fatigue testing Process parameters Submerged abrasive waterjet peening Surface integrity Surface treatment Titanium alloy TA19

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RMGNet: The Progressive Relationship-Mining Graph Neural Network for Text-to-Image Person Re-Identification

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IEEE Transactions on Circuits and systems for Video technology 2025年第6期35卷 5749-5761页

作者： Zhang, Xin Liu, Kun Wang, Xinwang Zhou, Zhong Chen, Haiyong Hebei University of Technology School of Artificial Intelligence Tianjin300130 China Southeast University School of Instrument Science and Engineering Jiangsu Nanjing210018 China Wuxi Institute of Technology School of Integrated Circuit Wuxi214121 China Zhongguancun Laboratory Beijing100086 China Beihang University State Key Laboratory of Virtual Reality Technology and Systems School of Computer Science and Engineering Beijing100191 China

The Text-to-Image Person Re-identification (TI-ReID) task objective is to precisely identify the person’s images with the textual description of the person. The mainstream research methods focus on cross-modal aligning local features, and overlook the learning of intra-modal and cross-modal relationships between different features. This renders the person features lacking in high-level semantic information. To resolve such issues, we propose the Progressive Relationship-Mining Graph Network (RMGNet), including the Intra-Modal Relationship-Mining (IMRM) and the Cross-Modal Relationship-Mining (CMRM) module. These modules are employed to model and mine semantic relationship information among different features. Specifically, the IMRM module models and mines the high-level semantic interrelationships inherent in the image and text features. The CMRM module introduces the nearest neighbor method to model cross-modal semantic relationships to enhance the cross-modal semantic correspondence capabilities of person features. On this basis, we design the Adaptive Corner Center (Acc) loss and the Coarse-to-Fine Learning (C2FL) strategy. These ensure the network receives consistent and effective metric learning supervision throughout the entirety of the training process. To validate the efficacy of the proposed method, extensive experiments are conducted on three prevalent datasets: CHUK-PEDES, ICFC-PEDES, and RSTPReid. The achieved mAP of 70.59%, 41.62%, and 49.58% surpassed those current state-of-the-art methods. © 1991-2012 IEEE.

关键词： Graph neural networks

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A Situation Awareness Model with Human-Machine Collaboration

A Situation Awareness Model with Human-Machine Collaboration

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2022 IEEE International Conference on Unmanned systems, ICUS 2022

作者： Meng, Xiangxia Li, Tingting Diao, Lianwang Science and Technology On Information Systems Engineering Laboratory Nanjing China

ISBN: (数字)9781665484565

ISBN: (纸本)9781665484565

To improve the understanding of battlefield situation, the mechanisms of human cognition, it is necessary to investigate the models and techniques associated with situation awareness. Based on a model with human-machine collaboration, the process completed by machine is discussed, while two mechanisms including attention mechanism and memory mechanism, and three methods are studied to realize situation awareness using mechine intelligence. The attention mechanism can be divided into purpose-drived and data-drived, while memory mechanism includes long-term memory and short-term memory. The three methods are situation awareness based on knowledge, the method on multi-level battlefield, and the method with hypothesis-testing. These approaches can contribute to achieving deeper understanding on the situation awareness, which can be helpful for the construction of command and control systems. © 2022 IEEE.

关键词： Command and control systems

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Uniform Ag_(6)Mo_(10)O_(33) meso/nanowires:High-efficient fabrication,novel growth mechanism,and reversibly high-energy sodium-ion battery

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Nano Research 2025年第4期18卷 189-198页

作者： Yuqing Yang Juan Liu Meiqi Zhang Qing Wang Ziqing Gui Xucheng Gu Chunsheng Li Yan Sun Yuxuan Sun Lianghuan Qin Yuzhen Zhao Wanzheng Lu Xiaofang Xu Xufeng Wang Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China School of Chemistry and Life SciencesSuzhou University of Science and TechnologySuzhou 215009China Xi’an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device School of Electronic InformationXijing UniversityXi’an 710123China School of Safety Science and Engineering Changzhou UniversityChangzhou 213164China Suzhou Key Laboratory of Biophotonics School of Optical and Electronic InformationSuzhou City UniversitySuzhou 215104China State Key Laboratory of Advanced Chemical Power Sources Guizhou Meiling Power Sources Co.LtdZunyi 563003China

Silver molybdate(Ag_(6)Mo_(10)O_(33))exhibits excellent catalytic properties and photocatalytic degradation owing to its unique chemical and structural characteristics,but its prospective applications in electrochemistry energy storage have not received sufficient ***,the Ag_(6)Mo_(10)O_(33) meso/nanowires with superior morphological characteristics are fabricated employing a high-efficient microwave irradiation ***,the novel synthesizing mechanism of ultralong Ag_(6)Mo_(10)O_(33) mesowires is also proved to be a“self-assembly-dissolution-recrystallization-Ostwald-ripening”process,by exploring through the parallel experiments on the dramatic alterations in topology and size of Ag_(6)Mo_(10)O_(33) at continuous reaction ***,the properties of the ultralong uniform Ag_(6)Mo_(10)O_(33) mesowires for the sodium storage are investigated via cyclic voltammetry,electrochemical impedance spectroscopy and galvanostatic ***,these as-obtained Ag_(6)Mo_(10)O_(33) mesowires exhibit an outstanding initial capacity(1587.9 mAh·g^(-1)),a remarkable specific capacity for the second cycle(817.9 mAh·g^(-1)),and an excellent reversible capacity(551.5 mAh·g^(-1) after 30 cycles).The superior electrochemical properties of the nanoscaled silver molybdate are ascribed to the lower charge transfer resistance due to the microstructure of the smallest size Ag_(6)Mo_(10)O_(33) nanosheets that exhibit a thickness of around 5 nm,which can provide a great contact with the electrolyte,facilitating the rapid diffusion of sodium ions at the electrode/electrolyte interface and the rapid transport of sodium ions within the electrode ***,the proposed synthetic strategy and achieved deep insights will stimulate the development of Ag_(6)Mo_(10)O_(33) for high-safety and long-life sodium ion batteries.

关键词： sodium-ion batteries self-assembly-dissolution-recrystallization-Ostwald-ripening fabricating mechanism microwave irradiation fabrication Ag_(6)Mo_(10)O_(33)meso/nanowires energy storage and conversion

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An Interference Cancellation technology of Almost Blank Subframe based on Hierarchical Parameter Estimation 24

An Interference Cancellation Technology of Almost Blank Subf...

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7th International Conference on Signal Processing and Machine Learning, SPML 2024

作者： Chen, Xiangzhu Ning, Zeqiang Chen, Ronghai Liu, Yan Xiong, Yuyang Ma, Wanzhi School of Information and Communication Engineering University of Electronic Science and Technology of China China National Key Laboratory of Wireless Communications University of Electronic Science and Technology of China China

ISBN: (纸本)9798400717192

Ultra-dense networking is one of the key technologies used in 5G communications. The method of almost blank subframes (ABS) based on interference cancellation can solve the problem of inter-cell interference while ensuring the efficiency of the base station. However, the conventional scheme is difficult to meet the demand for cancellation in the complex channel environment. Under such circumstances, in order to ensure the transmission quality of communication base station, jamming base stations have to set up a large number of ABS, which will greatly diminish their communication efficiency. Therefore, a new ABS scheme based on hierarchical parameter estimation is proposed in this paper. In this scheme, a hierarchical channel parameters estimation method is designed by only using three ABS, and then the obtained parameters are used to reconstruct the interference signal for interference cancellation at the terminal. According to the simulation results, the suggested method may improve conventional interference cancellation schemes by approximately 7dB in a complex channel environment. This ensuring the availability of interference cancellation ABS scheme in challenging conditions. © 2024 ACM.

关键词： Base stations

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A Low-profile Broadband Reconfigurable Reflectarray with Reflective Feed

A Low-profile Broadband Reconfigurable Reflectarray with Ref...

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2024 Photonics and Electromagnetics Research Symposium, PIERS 2024

作者： Li, Changhao Xi, Mengkai Zhao, Luyu Xidian University Key Laboratory of Science and Technology on Antennas and Microwaves China Anhui University School of Electronic and Information Engineering China

ISBN: (纸本)9798350375909

A broadband reconfigurable reflectarray antenna with an electromagnetic control mechanism is presented in this communication. The phase control of antenna is achieved by loading a 4-bit phase shifter, which is located on the back of the gnd. A biasing network is also designed to isolate the RF signal from DC. The element is a square of length 42.25mm (0.5 × λ at 3.55GHz). The equivalent circuit model is verified with the full-wave analysis. The proposed element provides low loss and a phase error of less than 22.5° in 3.3-3.8GHz. A reflective feed is inserted into the center of reflectarray. The electromagnetic wave is reflected to the reflectarray through the top of the reflective feed. Then, through the phase control of the reflectarray control radiation, the reflectarray realizes a high-gain antenna pattern, and has good beam forming and beam scanning capabilities. © 2024 IEEE.

关键词： Directional patterns (antenna)

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Improving luminescence and thermometric performance of Ba_(2)CaWO_(6):Er^(3+) by tri-doping with Yb^(3+) and Na^(+)

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Journal of Rare Earths 2023年第1期41卷 42-50页

作者： Lingyun Li Ziwei Zhou Fazheng Huang Senlin Peng Yantang Huang Guoqiang Wang Xinxu Li Fei-Fei Chen Chengkai Yang Xin-Xiong Li Yan Yu Key Laboratory of Advanced Materials Technology College of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China College of Chemistry Fuzhou UniversityFuzhou 350108China College of Physics and Information Engineering Fuzhou UniversityFuzhou 350108China

The Er3+doped double perovskite Ba_(2)CaWO_(6) crystal is a promising ratiometric thermometer based on the fluorescence intensity ratio(FIR) of transitions from ^(2)H_(11/2) and ^(4)S_(3/2) to the lowered ^(4)I_(15/2) ***,the Ca^(2+) vacancy defect caused by the charge difference between rare-earth ions and the substituted alkaline-earth ions gives rise to the non-radiative probability and limits the thermal ***,the up-conversion luminescence and thermometric performance of Er^(3+),Yb^(3+) dopedBa_(2)CaWO_(6) are tuned by tri-doping with alkaline *** Ca^(2+) vacancy defect can be eliminated by the introduction of Na^(+),which occupies the Ca^(2+) site when it is doped into Ba_(2)CaWO_(6) with Er^(3+) and Yb^(3+).On the contrary,the doping of Cs^(+) into Ba_(2)CaWO_(6) with Er^(3+) and Yb^(3+) enhances the defect concentration because it occupies the site of Ba^(2+).Thus,the tri-doping of Na^(+) reduces the non-radiative probability and enhances the quantum efficiency of Er^(3+),leading to the improvement of the thermometric sensitivity of Ba_(2)CaWO_(6).As a result,we get an excellent thermometric Ba_(2)CaWO_(6):8%Yb^(3+),3.5%Er^(3+),6%Na^(+) powder with a luminescence lifetime of 515 μs and maximum thermal sensitivity(S_(r)) of 1.45%/K,which is more than three times higher than that of the BCWO:Er^(3+) powder.

关键词： Up-conversion luminescence Optical thermometry Ba_(2)CaWO_(6) Er^(3+) Double perovskite Rare earths

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Performance-Optimize Adaptive Robust Tracking Control for USV-UAV Heterogeneous systems With Uncertainty

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IEEE Transactions on Vehicular technology 2025年第5期74卷 7251-7262页

作者： Chen, Guangjun Wang, Wencheng Dong, Jiuxiang Northeastern University College of Information Science and Engineering Liaoning Province Key Laboratory of Safe Operation Technique for Autonomous Unmanned Systems Shenyang110819 China Northeastern University State Key Laboratory of Synthetical Automation for Process Industries Shenyang110819 China Weifang University College of Machinery and Automation Weifang261061 China

This paper investigates the performance-optimized tracking control problem of the heterogeneous system consisting of the unmanned surface vehicle (USV) and the unmanned aerial vehicle (UAV) under uncertain dynamics. Based on the target tracking strategy, a performance optimization control framework for cooperative tracking in sea-air 3D space is established. To avoid the singularity of the UAV in the position loop inverse solution of the desired attitude, the saturation control strategy is designed to solve the UAV guidance problem, and the UAV position loop obtains bounded thrust. For the kinematic layer of the USV-UAV system, based on the prescribed performance control and optimal control methods, a prescribed performance-optimized control strategy is designed to optimize the virtual control input while ensuring the prescribed control performance. In addition, to reduce the impact of uncertainty on the USV-UAV control system, a prescribed performance compensation control scheme is proposed in the kinetic loop, which improves the USV-UAV control system robustness. The established sea-air 3D cooperative target tracking control framework can also be extended to complex formation control. Finally, experimental simulations verify the effectiveness of the designed control scheme. © 1967-2012 IEEE.

关键词： Unmanned aerial vehicles (UAV)

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