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engineering Bipolar Doping in a Janus Dual‑Atom Catalyst for Photo‑Enhanced Rechargeable Zn‑Air Battery

Nano-Micro Letters 2025年第9期17卷 29-44页

作者： Ning Liu Yinwu Li Wencai Liu Zhanhao Liang Bin Liao Fang Yang Ming Zhao Bo Yan Xuchun Gui Hong Bin Yang Dingshan Yu Zhiping Zeng Guowei Yang State Key Laboratory of Optoelectronic Materials School of Materials Science and EngineeringSun Yat-Sen UniversityGuangzhou 510275People’s Republic of China Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education Key Laboratory of High‑Performance Polymer‑Based Composites of Guangdong ProvinceSchool of ChemistrySun Yat-Sen UniversityGuangzhou 510275People’s Republic of China School of Materials Science and Engineering Suzhou University of Science and TechnologySuzhou 215009People’s Republic of China State Key Laboratory of Optoelectronic Materials and Technologies School of Electronics and Information TechnologySun Yat-Sen UniversityGuangzhou 510275People’s Republic of China

Harnessing solar energy to enhance the rechargeable zinc-air batteries(RZABs)performance is a promising avenue toward sustainable energy storage and *** enhancing light-absorption capacity and carrier separation efficiency in nanomaterials,as well as improving electrical conductivity and configuration for electrocatalysis,presents a formidable challenge due to inherent trade-offs and ***,we have developed a Janus dual-atom catalyst(JDAC)with bifunctional centers for efficient charge separation and electrocatalytic performance through a bipolar doping *** in situ X-ray absorption near-edge structure and Raman spectroscopy analyses demonstrated that the Ni and Fe centers in JDAC not only function as effective sites for oxygen evolution reaction and oxygen reduction reaction,respectively,but also serve as efficient hole and electron enrichment sites,effectively suppressing photoelectron recombination while enhancing photocurrent *** a result,the assembled JDAC-based lightassisted RZABs exhibited extraordinary stability at large current *** work delivers pivotal insight to design Janus dual-atom catalysts that efficiently convert solar energy into electric and chemical energy.

关键词： Janus dual-atom catalyst Bifunctional center Bipolar doping Oxygen redox reaction Fuel cell

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Learning Scalable Task Assignment with Imperative-Priori Conflict Resolution in Multi-UAV Adversarial Swarm Defense Problem

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Journal of systems science & Complexity 2024年第1期37卷 369-388页

作者： ZHAO Zhixin CHEN Jie XIN Bin LI Li JIAO Keming ZHENG Yifan School of Electronics and Information Engineering Tongji UniversityShanghai 201804China Shanghai Institute of Intelligent Science and Technology Tongji UniversityShanghai 201804China School of Automation Beijing Institute of TechnologyBeijing 100081China National Key Laboratory of Autonomous Intelligent Unmanned Systems Beijing 100081China Shanghai Institute of Intelligent Science and Technology Tongji UniversityShanghai 201804China.

The multi-UAV adversary swarm defense(MUASD)problem is to defend a static base against an adversary UAV swarm by a defensive UAV *** the problem into task assignment and low-level interception strategies is a widely used ***-based approaches for task assignment are a promising *** studies on learning-based methods generally assume decentralized decision-making architecture,which is not beneficial for conflict *** contrast,centralized decision-making architecture is beneficial for conflict resolution while it is often detrimental to *** achieve scalability and conflict resolution simultaneously,inspired by a self-attention-based task assignment method for sensor target coverage problem,a scalable centralized assignment method based on self-attention mechanism together with a defender-attacker pairwise observation preprocessing(DAP-SelfAtt)is ***,an imperative-priori conflict resolution(IPCR)mechanism is proposed to achieve conflict-free ***,the IPCR mechanism is parallelized to enable efficient *** validate the algorithm,a variant of proximal policy optimization algorithm(PPO)is employed for training in scenarios of various *** experimental results show that the proposed algorithm not only achieves conflict-free task assignment but also maintains scalability,and significantly improve the success rate of defense.

关键词： Conflict resolution reinforcement learning scalability task assignment.

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Oblique shock train motion based on schlieren image processing

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Chinese Journal of Aeronautics 2023年第3期36卷 30-41页

作者： Longsheng XUE Chuan CHENG Chengpeng WANG Lantian ZHANG Kang LI Keming CHENG College of Aerospace Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China Key Laboratory of Unsteady Aerodynamics and Flow Control Ministry of Industry and Information TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016China Beijing Institute of Tracking and Telecommunication Technology Beijing 100094China Aerospace System Engineering Shanghai Shanghai 201109China

In this paper,shock train motion in a Mach number 2.7 duct is studied experimentally,and large numbers of schlieren images are obtained by a high-speed *** image processing method based on Maximum Correlation Detection(MCD)is proposed to detect shock train motion from the schlieren images,based on which the key structures,e.g.,separation positions and separation shock angles on the top and bottom walls,can be analysed in *** oscillations of the shock train are generated by rhombus and ellipse shafts at various excitation *** to the analysis of MCD results,the distributions of the frequency components of shock train oscillation generated by the two shafts are distinctly different,in which the motion generated by the ellipse shaft is much smoother;shock train motion is mainly characterized by the oscillation of separation position while the separation shock strength is not so sensitive to downstream disturbance;there is a hysteresis loop relation between the downstream pressure and separation position.

关键词： Frequency components Hysteresis loop Maximum Correlation Detection(MCD) Schlieren image processing Shock train oscillation

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Modal-Dispersion Statistics in Multiple-Mode Fibers from Weak to Strong Coupling Regimes

Modal-Dispersion Statistics in Multiple-Mode Fibers from Wea...

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2024 Asia Communications and Photonics Conference, ACP 2024 and International Conference on information Photonics and Optical Communications, IPOC 2024

作者： Sun, Fengtao Zhu, Xinran Liu, Xiaoxiao Yang, Zhenshan Zhang, Xia Shandong Provincial Key Laboratory of Optical Communications Science and Technology School of Physics Science and Information Engineering Liaocheng University Liaocheng Shandong252000 China

We numerically simulate the joint probability distributions of the modal dispersion in a 6-mode fiber and show that the modal-dispersion statistics has qualitatively distinct features in the weak and strong mode-coupl... 详细信息

ISBN: (纸本)9798350379266

关键词： Modal analysis

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Reversible solid-liquid conversion enabled by self-capture effect for stable non-flow zinc-bromine batteries

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Green Energy & Environment 2024年第6期9卷 1035-1044页

作者： Xixi Zhang Xiaoke Wang Guangmeng Qu Tairan Wang Xiliang Zhao Jun Fan Cuiping Han Xijin Xu Chunyi Zhi Hongfei Li School of Physics and Technology University of JinanShandong250022China Songshan Lake Materials Laboratory DongguanGuangdong523808China Department of Materials Science and Engineering City University of Hong Kong83 Tat Chee AvenueHong KongChina Faculty of Materials Science and Engineering and Low Dimensional Energy Materials Research Center Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong518055China School of System Design and Intelligent Manufacturing Southern University of Science and TechnologyShenzhenGuangdong518055China

Non-flow aqueous zinc-bromine batteries without auxiliary components(e.g.,pumps,pipes,storage tanks)and ion-selective membranes represent a cost-effective and promising technology for large-scale energy ***,they generally suffer from serious diffusion and shuttle of polybromide(Br^(-),Br^(3-))due to the weak physical adsorption between soluble polybromide and host carbon materials,which results in low energy efficiency and poor cycling ***,we develop a novel self-capture organic bromine material(1,10-bis[3-(trimethylammonio)propyl]-4,4'-bipyridinium bromine,NVBr4)to successfully realize reversible solid complexation of bromide components for stable non-flow zinc-bromine battery *** quaternary ammonium groups(NV^(4+)ions)can effectively capture the soluble polybromide species based on strong chemical interaction and realize reversible solid complexation confined within the porous electrodes,which transforms the conventional“liquid-liquid”conversion of soluble bromide components into“liquid-solid”model and effectively suppresses the shuttle ***,the developed non-flow zinc-bromide battery provides an outstanding voltage platform at 1.7 V with a notable specific capacity of 325 mAh g^(-1)NVBr4(1 A g^(-1)),excellent rate capability(200 mAh g^(-1)NVBr4 at 20 A g^(-1)),outstanding energy density of 469.6 Wh kg^(-1)and super-stable cycle life(20,000 cycles with 100%Coulombic efficiency),which outperforms most of reported zinc-halogen *** mechanism analysis and DFT calculations demonstrate that the chemical interaction of quaternary ammonium groups and bromide species is the main reason for suppressing the shuttle *** developed strategy can be extended to other halogen batteries to obtain stable charge storage.

关键词： Solid-liquid conversion Self-capture Non-ﬂow zinc-bromine batteries Quaternary ammonium

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Analysis on the Influence of Regional Agricultural Planting Factors on Grain Yield Based on Genetic Feedback Process Neural Network 1

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15th International Conference on Genetic and Evolutionary Computing, ICGEC 2023

作者： Tian, Yuan Liang, Yongquan College of Computer Science and Engineering Shandong University of Science and Technology Shandong Qingdao China Provincial Key Laboratory for Information Technology of Wisdom Mining of Shandong Province Shandong University of Science and Technology Shandong Qingdao China

ISBN: (数字)9789819700684

ISBN: (纸本)9789819700677

With the accumulation of Agricultural Big Data, the management and decision-making of agricultural planting production based on single factor expose the problem of lack of comprehensive analysis. In this paper, considering the high dimensions and time-varying characteristics of agricultural big data, a new time series analysis model based on Genetic Feedback Process Neural Network (GFPNN) is proposed to analyze the influence of regional agricultural planting factors on grain yield. Take China as an example, the data of 11 agricultural planting factors in China from 1980 to 2020 constitute a time series. Analyze the time series by GFPNN to establish the influence model of agricultural planting factors on grain yield. Results show that this model can estimate grain yield with an accuracy of 97.83%, which is more accurate and efficient than traditional neural network. It can evaluate the influence of changes in agricultural planting factors on grain yield. It can be a reference for taking measures to deal with the change of grain yield and making grain policy;in the long run, developing and introducing appropriate agricultural machinery, popularizing efficient water-saving irrigation technology, further investing in rural education, and reducing planting costs can improve the grain yield to a certain extent. © 2024, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Time series analysis

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High-resolution tumor marker detection based on microwave photonics demodulated dual wavelength fiber laser sensor

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Opto-Electronic Advances 2024年第12期7卷 61-77页

作者： Jie Hu Weihao Lin Liyang Shao Chenlong Xue Fang Zhao Dongrui Xiao Yang Ran Yue Meng Panpan He Zhiguang Yu Jinna Chen Perry Ping Shum Department of Electronic and Electrical Engineering Southern University of Science and TechnologyShenzhen 518055China School of Electrical Information Engineering Hunan Institute of TechnologyHengyang 421002China Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Institute of Photonics TechnologyJinan UniversityGuangzhou 510632China Department of Clinical Laboratory Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhou 511436China Medcaptain Medical Technology Co. Ltd.Shenzhen 518055China

The specific detection of tumor markers is crucial in early tumor screening and subsequent treatment *** ac-curately distinguish the signal response caused by trace markers,the high demodulation resolution of the sensor is *** this paper,we propose a dual-wavelength fiber laser sensing system enhanced with microwave photonics de-modulation technology to achieve high-resolution tumor marker *** sensing system can simultaneously perform spectral wavelength-domain and frequency-domain *** results demonstrate that this system's refractive index(RI)sensitivity reaches 1083 nm/RIU by wavelength analysis and-1902 GHz/RIU by frequency analysis,with ideal detection resolutions of 1.85×10^(-5)RIU and 5.26×10^(-8)RIU,*** with traditional wavelength domain analysis,the demodulation resolution is improved by three orders of magnitude,based on the same sensing *** validate its biosensing performance,carcinoembryonic antigen-related cell adhesion molecule 5(CEACAM5)is selected as the detection *** results show that the improved sensing system has a limit of detection(LOD)of 0.076 ng/mL and a detection resolution of 0.008 ng/*** results obtained from human serum samples are consistent with clinical data,highlighting the strong clinical application potential of the proposed sens-ing system and analysis method.

关键词： optical fiber sensor optical fiber laser microwave photonics demodulation high-resolution detection tumor marker detection

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Analysis of the impact of long-term service of inverter devices on electromagnetic compatibility 2

Analysis of the impact of long-term service of inverter devi...

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2nd China Power Supply Society Electromagnetic Compatibility Conference, CPEMC 2024

作者： Zhang, Ruiheng Pei, Xuejun Meng, Jin Fan, Hongming Zhou, Peng Yuan, Yuzhang Power Electronics and Energy Management Key Laboratory Ministry of Education of China Huazhong University of Science and Technology Wuhan China National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering Wuhan China

ISBN: (纸本)9798331509552

Taking the IGBT power module of the inverter device as the research object, finite element analysis technology was used to explore the influence of long-term service on the thermal characteristics and stress-strain of the IGBT module. At the same time, the influence of service aging on the electromagnetic compatibility performance of the device was studied, and the finite element simulation results were verified through accelerated aging experiments. The results showed that during the long-term operation of the IGBT module, due to the different thermal expansion coefficients of its materials, strain differences were found, ultimately leading to an increase in its ground capacitance, resulting in an increase in the amplitude of the common mode conducted noise of the device by 3dBμA in the frequency band after 20MHz. This study will provide theoretical guidance for the electromagnetic compatibility design of inverter devices for long-term service. ©2024 IEEE.

关键词： Insulated gate bipolar transistors (IGBT)

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Efficient and accurate numerical-projection of electromagnetic multipoles for scattering objects

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Frontiers of Optoelectronics 2023年第4期16卷 215-226页

作者： Wenfei Guo Zizhe Cai Zhongfei Xiong Weijin Chen Yuntian Chen School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China Department of Electrical and Computer Engineering National University of SingaporeSingapore 117576Singapore Wuhan National Laboratory of Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Optics Valley Laboratory Wuhan 430074China

In this paper,we develop an efcient and accurate procedure of electromagnetic multipole decomposition by using the Lebedev and Gaussian quadrature methods to perform the numerical ***,we briefy review the principles of multipole decomposition,highlighting two numerical projection methods including surface and volume ***,we discuss the Lebedev and Gaussian quadrature methods,provide a detailed recipe to select the quadrature points and the corresponding weighting factor,and illustrate the integration accuracy and numerical efciency(that is,with very few sampling points)using a unit sphere surface and regular *** the demonstrations of an isotropic dielectric nanosphere,a symmetric scatterer,and an anisotropic nanosphere,we perform multipole decomposition and validate our numerical projection *** obtained results from our procedure are all consistent with those from Mie theory,symmetry constraints,and fnite element simulations.

关键词： Multipole decomposition Numerical quadrature Light scattering

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An SIE Formulation with Loop Analysis for Large-Scale Arbitrarily Shaped Interconnects

An SIE Formulation with Loop Analysis for Large-Scale Arbitr...

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2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio science Meeting, AP-S/URSI 2023

作者： Zhu, Zekun Gong, Ningbo Diao, Guijie Yang, Shunchuan School of Electronic and Information Engineering Beihang University Beijing China Beijing Electro-mechanical Engineering Institute Beijing China Science and Technology on Complex System Control and Intelligent Agent Cooperation Laboratory China

ISBN: (纸本)9781665442282

A magneto-quasi-static (MQS) surface integral equation (SIE) formulation with loop analysis is proposed to extract the impedance of interconnects in packages. The loop analysis is developed with an independent and complete set of unknowns according to the graph theory, which can significantly reduce the dimension of the final matrix. With the pre-corrected fast Fourier Transform (pFFT), large-scale interconnects can be efficiently modelled. A practical example in packages is carried out to validate the effectiveness and scalability of the proposed formulation. Results show that the proposed formulation is accurate and flexible to model complex interconnects in packages compared with the industrial solver. © 2023 IEEE.

关键词： Fast Fourier transforms

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