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24th COTA International Conference of Transportation Professionals: Resilient, Intelligent, Connected, and Lowcarbon Multimodal Transportation, CICTP 2024

作者： Luo, Shuyuan Hu, Jia Lai, Jintao Key Laboratory of Road and Traffic Engineering Ministry of Education Tongji Univ. Shanghai China State Key Laboratory of Advanced Design and Manufacturing Technology for Vehicle China Dept. of Control Science and Engineering Tongji Univ. Shanghai China

ISBN: (数字)9780784485484

ISBN: (纸本)9780784485484

An enhanced cooperative perception system based on Roadside Units (RSUs) and Vehicle-to-Infrastructure (V2I) communication is proposed. The objective is to improve the perception capabilities of Connected Autonomous Vehicles (CAVs) by leveraging perception information obtained from RSUs. CAV’s perception performance determines the reliability of autonomous driving. In the proposed system, the infrastructure-enabled perception algorithm realizes wide-range and high-precision perception, while V2I communication transmits data collected by the RSUs to CAVs. In this way, the enhanced cooperative perception system can furnish CAVs with precise and prompt awareness of their Region of Interest (RoI), even when the RoI extends beyond the CAV’s perceivable range. The proposed system has been evaluated using a software-in-the-loop approach. Experiments have confirmed that the proposed system shows superiority in enhancing safety and efficiency for CAVs. © ASCE.

关键词： Autonomous vehicles

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Spin transfer nano-oscillator based on synthetic antiferromagnetic skyrmion pair assisted by perpendicular fixed magnetic field

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Chinese Physics B 2022年第10期31卷 319-325页

作者： Yun-Xu Ma Jia-Ning Wang Zhao-Zhuo Zeng Ying-Yue Yuan Jin-Xia Yang Hui-Bo Liu Sen-Fu Zhang Jian-Bo Wang Chen-Dong Jin Qing-Fang Liu Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education Lanzhou UniversityLanzhou 730000China Key Laboratory for Special Function Materials and Structural Design of the Ministry of Education Lanzhou UniversityLanzhou 730000China College of Physics Science and Technology Hebei UniversityBaoding 071002China

As a microwave generator, spin transfer nano-oscillator(STNO) based on skyrmion promises to become one of the next-generation spintronic devices. However, there still exist a few limitations to the practical applications. In this paper, we propose a new STNO based on synthetic antiferromagnetic(SAF) skyrmion pair assisted by a perpendicular fixed magnetic field. It is found that the oscillation frequency of this kind of STNO can reach up to 5.0 GHz, and the multiple oscillation peak with higher frequency can be realized under a fixed out-of-plane magnetic field. Further investigation shows that the skyrmion stability is improved by bilayer antiferromagnetic coupling, which guarantees the stability process of skyrmion under higher spin-polarized current density. Our results provide the alternative possibilities for designing new skyrmionbased STNO to further improve the oscillation frequency, and realize the output of multiple frequency microwave signal.

关键词： nano-oscillator skyrmion spin-polarized current spintronic devices

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Cosolvent electrolyte chemistries for high-voltage potassium-ion battery

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National science Review 2024年第11期11卷 172-182页

作者： Mengkang Shen Zhongqin Dai Ling Fan Hongwei Fu Yuanhui Geng Jie Guan Fanfei Sun Apparao M.Rao Jiang Zhou Bingan Lu School of Physics and Electronics Hunan University School of Physical Science and Technology Shanghai Tech University Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai Institute of Applied Physics Chinese Academy of Sciences Department of Physics and Astronomy Clemson Nanomaterials Institute Clemson University School of Materials Science and Engineering Central South University State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan University

The poor oxidation resistance of traditional electrolytes has hampered the development of high-voltage potassium-ion battery technology. Here, we present a cosolvent electrolyte design strategy to overcome the high-voltage limitations of potassium-ion electrolyte chemistries. The cosolvent electrolyte breaks the dissolution limitation of the salt through ion–dipole interactions, significantly enlarging the anion-rich solvation clusters, as verified by the in situ synchrotron-based wide-angle X-ray scattering ***, the large anion-rich solvation clusters also facilitate the formation of an effective electrode–electrolyte interphase, thereby enhancing compatibility with high-voltage electrodes. The cosolvent electrolyte enables K||Prussian blue cells (2–4.5 V) to operate for >700 cycles with a capacity retention of 91.9%. Our cosolvent electrolyte design strategy paves new avenues for the development of high-voltage potassium-ion batteries and beyond.

关键词： potassium-ion battery cosolvent electrolyte high-voltage anion-rich solvation large solvation clusters

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Electronic structures and NIR-II optical properties of black phosphorus using first principles

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Optoelectronics Letters 2022年第10期18卷 595-600页

作者： HONG Xiaofeng GUO Meili LIU Ling LI Yonghui ZHANG Xiaodong Science and Technology on Reactor Fuel and Materials Laboratory Nuclear Power Institute of ChinaChengdu610041China Department of Physics School of ScienceTianjin Chengjian UniversityTianjin300384China Tianjin Key Laboratory of Brain Science and Neural Engineering Academy of Medical Engineering and Translational MedicineTianjin UniversityTianjin300072China Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology School of SciencesTianjin UniversityTianjin300350China

Near infrared-II(NIR-II, 1 000-1 700 nm) imaging with high penetration tissue depth and signal-noise ratio has attracted wide interest in biomedicine. As a two-dimensional(2D) material with narrow band gap, the band structure of layered black phosphorus, as an important characteristic of electronic structure, determines the electronic transport and infrared optical properties, which show great potential in NIIR-II imaging. Here, the electronic structure and NIR-II optical properties of black phosphorus have been investigated in detail by employing the generalized gradient approximation + U(GGA+U) correction based on density functional theory(DFT). First, we performed the band structure and density of states for different layers of black phosphorus. From the electronic structures, the location of valence band maximum didn’t shift obviously, and the position of conduction band minimum shifted downward gradually, inducing the band gaps decreased gradually with the increasing layer number. While the layer number increased to 5, the behaviour of electronic structure was very similar to that of the bulk black phosphorus. Then, we calculated the NIR-II optical properties, and found the optical band gap of black phosphorus also showed layer dependent properties. From a single layer to 5 layers, the optical band gap changed from 1.71 e V to 0.92 e V. It is noting that black phosphorus also showed the significant optical absorption in NIR-IIa(1 300-1 400 nm) and NIR-IIb(1 500-1 700 nm) windows. Especially, the NIR-II optical absorption can be enhanced with increasing the layer number to 5, indicating promising photoresponse materials in NIR-II imaging.

关键词： phosphorus black optical

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Optimization method investigation for centrifugal pump performance based on 3D inviscid inverse design 17

Optimization method investigation for centrifugal pump perfo...

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17th Asian International Conference on Fluid Machinery, AICFM 2023

作者： Shen, Zhenhua Wang, Chao Ye, Daoxing Zhang, Libin Wang, Peng Taizhou Vocational College of Science and Technology 288 Jiamu Road Taizhou China Key Laboratory of Fluid Machinery and Engineering Xihua University Sichuan Province China Research Center of Fluid Machinery Engineering and Technology Jiangsu University 301 Xuefu Road Zhenjiang China Advanced Design Technology Ltd 30 Millbank London United Kingdom

Centrifugal pump is widely used in many important fields such as large hydropower station, urban central heating, aerospace engineering, etc. It has high requirements for cavitation performance and hydraulic performance in actual use. This study centers around on a pipeline pump with a specific speed of 360, reconstructs the impeller in TURBOdesign, takes important parameters of the impeller as the input conditions for optimization, aims at enhancing the blade's minimum pressure and curtailing the flow losses in the blade channel and progressively optimize the meridional-blade loading based on the inviscid flow which was carried out by using genetic algorithm. The optimization leverages genetic algorithm, progressively optimizing the impeller using meridional and blade loading. By analyzing the effects of meridional and blade loading parameters on cavitation and hydraulic performance, it is found that the optimized models' NPSH are much better than the original one. It's approved that this optimization method is valid. © Published under licence by IOP Publishing Ltd.

关键词： Genetic algorithms

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Single-shot based background-free mid-infrared spectroscopy using upconversion of sub-cycle pulses

Single-shot based background-free mid-infrared spectroscopy ...

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Mid-Infrared Coherent Sources, MICS 2024 - Part of Optica High-Brightness Sources and Light-Driven Interactions Congress

作者： Cabello, Neil Irvin Ozawa, Shinta Zhao, Yue Fuji, Takao Laser Science Laboratory Toyota Technological Institute 2-12-1 Hisakata Tempaku-ku Nagoya468-8511 Japan Graduate School of Engineering College of Design and Manufacturing Technology Muroran Institute of Technology 27-1 Mizumoto-cho Hokkaido Muroran050-8585 Japan

We have successfully demonstrated highly sensitive broadband mid-infrared spectroscopy using sub-cycle pulses generated through filamentation. Single-shot based and background-free measurement of absorption spectra wa... 详细信息

关键词： Infrared spectroscopy

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Organic polaritonic light-emitting diodes with high luminance and color purity toward laser displays

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Light(science & Applications) 2024年第9期13卷 1956-1963页

作者： Jianbo De Ruiyang Zhao Fan Yin Chunling Gu Teng Long Han Huang Xue Cao Cunbin An Bo Liao Hongbing Fu Qing Liao Beijing Key Laboratory for Optical Materials and Photonic Devices Department of ChemistryCapital Normal University100048 BeijingChina Beijing Special Engineering Design and Research Institute 100028 BeijingChina Institute of Process Engineering Chinese Academy of Sciences100190 BeijingChina Institute of Molecule Plus Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering(Tianjin)300072 TianjinChina School of Materials Science and Engineering Hunan University of Science and Technology411201 XiangtanHunanChina

Achieving high-luminescence organic light-emitting devices(OLEDs)with narrowband emission and high color purity is important in various optoelectronic *** displays exhibit outstanding advantages in next-generation display technologies owing to their ultimate visual experience,but this remains a great ***,we develop a novel OLED based organic single *** strongly coupling the organic exciton state to an optical microcavity,we obtain polariton electroluminescent(EL)emission from the polariton OLEDs(OPLEDs)with high luminance,narrow-band emission,high color purity,high polarization as well as excellent optically pumped polariton ***,we evaluate the potential for electrically pumped polariton laser through theoretical analysis and provide possible *** work provides a powerful strategy with a material–device combination that paves the way for electrically driven organic single-crystal-based polariton luminescent devices and possibly lasers.

关键词： pumped laser polarization

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Wireless Federated Learning With Hybrid Local and Centralized Training: A Latency Minimization design

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IEEE Journal on Selected Topics in Signal Processing 2023年第1期17卷 248-263页

作者： Huang, Ning Dai, Minghui Wu, Yuan Quek, Tony Q. S. Shen, Xuemin State Key Lab of Internet of Things for Smart City China University of Macau Department of Computer and Information Science China University of Macau State Key Laboratory of Internet of Things for Smart City The Department of Computer and Information Science China Zhuhai Um Science and Technology Research Institute Zhuhai519031 China Singapore University of Technology and Design Information Systems Technology and Design Pillar 487372 Singapore National Cheng Kung University Taiwan University of Waterloo Department of Electrical and Computer Engineering WaterlooONN2L 3G1 Canada

Wireless federated learning (FL) is a collaborative machine learning (ML) framework in which wireless client-devices independently train their ML models and send the locally trained models to the FL server for aggregation. In this paper, we consider the coexistence of privacy-sensitive client-devices and privacy-insensitive yet computing-resource constrained client-devices, and propose an FL framework with a hybrid centralized training and local training. Specifically, the privacy-sensitive client-devices perform local ML model training and send their local models to the FL server. Each privacy-insensitive client-device can have two options, i.e., (i) conducting a local training and then sending its local model to the FL server, and (ii) directly sending its local data to the FL server for the centralized training. The FL server, after collecting the data from the privacy-insensitive client-devices (which choose to upload the local data), conducts a centralized training with the received datasets. The global model is then generated by aggregating (i) the local models uploaded by the client-devices and (ii) the model trained by the FL server centrally. Focusing on this hybrid FL framework, we firstly analyze its convergence feature with respect to the client-devices' selections of local training or centralized training. We then formulate a joint optimization of client-devices' selections of the local training or centralized training, the FL training configuration (i.e., the number of the local iterations and the number of the global iterations), and the bandwidth allocations to the client-devices, with the objective of minimizing the overall latency for reaching the FL convergence. Despite the non-convexity of the joint optimization problem, we identify its layered structure and propose an efficient algorithm to solve it. Numerical results demonstrate the advantage of our proposed FL framework with the hybrid local and centralized training as well as our proposed alg

关键词： Information management

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Selective recovery of Th(Ⅳ) from radioactive rare earth waste residue by utilizing MoS_(2)-modified ion-absorbed type rare earth tailings

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Journal of Rare Earths 2024年第9期42卷 1782-1791,I0005页

作者： Xirong Chen Xinyu Fu Yun Gao Zhiyuan Zeng Bin Huang Xiaoqi Sun Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and TechnologyGanzhou341000China CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou350002China Fujian Research Center for Rare Earth Engineering Technology Xiamen Institute of Rare Earth MaterialsHaixi InstituteChinese Academy of SciencesXiamen361021China Fujian College University of Chinese Academy of SciencesFuzhou350002China Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths Ganjiang Innovation AcademyChinese Academy of SciencesGanzhouJiangxi341000China

In the process of extracting ion-absorbed rare earth ore(IREO),the production of radioactive waste is a major environmental *** address this issue,MoS_(2) was used to modify ion-absorbed rare earth tailings(RET) to synthesize a novel MoS_(2)@RET composite material for the effective handling of radioactive waste generated in IREO separation *** composite material was thoroughly characterized using various analytical techniques,including X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),thermogravimetry(TG),Fourier-transform infrared(FTIR),scanning electron microscopy(SEM),Brunaue r-Emmett-Teller(BET) and energy dispersive spectroscopy(EDS).By optimizing the operating parameters,the optimal experimental conditions were determined to be pH=3,contact time=60 min,liquid-solid ratio=6 g/L,and initial concentration=150 mg/*** adsorption data fitted well with the pseudo second-order rate *** thermodynamic parameters concerning the adsorption of Th(Ⅳ) were analyzed and *** isotherm model is a more fitting choice for the adsorption process compared to the Freundlich isotherm ***_(2)@RET was used in the acid leachate of IREO waste residue,achieving the separation of Th and rare earth *** mechanism of Th(Ⅳ) adsorption by MoS_(2)@RET was investigated,revealing that the adsorption process involves electrostatic interactions,chemical bonding,and redox *** above research results indicate that MoS_(2)@RET composite materials have application potential in the sustainable treatment of IREO radioactive waste.

关键词： Rare earths Thorium Radioactive waste residue Adsorption Separation

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Transition Metal Sulfide-Based Nanozymes: From design Strategies to Applications in Chronic Wound Healing

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ACS Applied Nano Materials 2025年第22期8卷 11521-11556页

作者： Yuying Zhang Renxi Li XianXi Li Pengwu Zheng Wufu Zhu Cunpeng Nie Qingshan Pan Jiangxi Provincial Key Laboratory of Drug Design and Evaluation School of Pharmacy Jiangxi Science & Technology Normal University Nanchang 330013 China

Transition metal sulfide-based nanozymes (TMSNs) have emerged as a prominent research topic within the bio- and nanomedical community due to their unique nanostructures, abundant active sites, and excellent biocompatibility. In recent years, significant efforts have been dedicated to the development of transition metal sulfide compounds. However, the analysis and summarization of transition metal sulfide nanozymes have received comparatively less attention. TMSNs, which are metal-based nanozymes formed through the combination of transition metal cations and anionic sulfur ions, exhibit remarkable enzyme-like catalytic activities. Their unique electronic structure confers several advantageous properties, including a high surface area, superior photothermal conversion efficiency, and multienzyme catalytic capabilities, making them particularly valuable in nanomedicine as both therapeutic agents and delivery carriers. This review provides a comprehensive examination of the design, synthesis, and applications of transition metal sulfide-based nanozymes in chronic wound treatment. We systematically analyze and summarize research content and recent advancements of TMSNs from three perspectives: various synthesis techniques, the type of transition metals, and the morphology of the nanozymes. Additionally, we discuss the optimization of TMSN catalytic activity through different functionalization strategies to address the challenges encountered in their application for chronic wound treatment. Finally, we critically assess the current opportunities and challenges facing TMSN research, offering valuable insights and perspectives to guide future investigations in the fields of bio- and nanomedicine.

关键词： catalytic activity chronic wound nanozymes synthesis techniques transition metal sulfide

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