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Renewable Power Generation and Future Power Systems Conference 2023, RPG 2023 UK

作者： Han, Naizheng Deng, Weihua Lin, Zhiguang Liu, Yali Chen, Kailong Jiang, Zhe Lv, Zhenhua State Key Laboratory of Advanced Power Transmission Technology State Grid Smart Grid Research Institute Co. Ltd Beijing China State Grid Jiangsu Electric Power Research Institute Co. Ltd Nanjing China

ISBN: (纸本)9781839539848

The use of DC/DC converters to achieve full DC transmission of large-scale new energy can improve the operational efficiency and safety stability of the system. This paper proposes a new type of DC/DC converter to address the low engineering feasibility of current high-voltage and high-capacity DC/DC converters. Firstly, the topology construction theory based on auxiliary branch construction and the basic working principle of the new converter are introduced. Secondly, a two-phase bridge arm energy balance control strategy was proposed that can achieve stable power transmission and voltage transformation. And the parameter design method of the proposed transformer was introduced. Finally, the stable operation of the proposed transformer was simulated and verified on the PSCAD simulation platform, verifying the effectiveness of the proposed topology, control strategy, and parameter design method, providing theoretical support for the engineering application of high-voltage high-capacity DC/DC converters. © The Institution of Engineering & technology 2023.

关键词： Energy balance

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Accurate prediction method for the microstructure of amorphous alloys without non-metallic elements

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Chinese Physics B 2021年第11期30卷 440-444页

作者： Wei Zhao Jia-Lin Cheng Gong Li Xin Wang School of Materials Science and Engineering Nanjing Institute of TechnologyNanjing 211167China State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004China Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology Nanjing 211167China School of Materials Science and Engineering Harbin University of Science and TechnologyHarbin 150080China

A new structural parameter of amorphous alloys called atomic bond proportion was proposed, and a topological algorithm for the structural parameter was proven feasible in the previous work. In the present study, a correction factor, λ,is introduced to optimize the algorithm and dramatically improve the calculation accuracy of the atomic bond *** correction factor represents the ability of heterogeneous atoms to combine with one another to form the metallic bonds and it is associated with the uniformity of the master alloy, mixing enthalpy, cooling rate during preparation, and annealing time. The correction factor provides a novel pathway for researching the structures of the amorphous alloys.

关键词： atomic bond proportion correction factor amorphous materials microstructure

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Fabrication and properties of silver-based composites reinforced with carbon-coated Ti_(3)AlC_(2)

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International Journal of Minerals,Metallurgy and Materials 2021年第11期28卷 1836-1843页

作者： Yong-fa Zhu Wu-bian Tian Dan-dan Wang Heng Zhang Jian-xiang Ding Pei-gen Zhang Zheng-ming Sun Jiangsu Key Laboratory of Advanced Metallic Materials School of Materials Science and EngineeringSoutheast UniversityNanjing 211189China Key Laboratory of Metallurgical Emission Reduction&Resources Recycling Ministry of EducationSchool of Materials Science and EngineeringAnhui University of TechnologyMa’anshan 243002China

Ti_(3)AlC_(2)-reinforced Ag-based composites,which are used as sliding current collectors,electrical contacts,and electrode materials,exhibit remarkable ***,the interfacial reactions between Ag and Ti_(3)AlC_(2) significantly degrade the electrical and thermal properties of these *** diminish these interfacial reactions,we fabricated carbon-coated Ti_(3)AlC_(2) particles(C@Ti_(3)AlC_(2))as reinforcement and prepared Ag–10wt%C@Ti_(3)AlC_(2) composites with carbon-layer thicknesses ranging from 50–200 *** with the uncoated Ag–Ti_(3)AlC_(2) composite,Ag–C@Ti_(3)AlC_(2) was found to have a better distribution of Ti_(3)AlC_(2) *** increases in the carbon-layer thickness,the Vickers hardness value and relative density of Ag–C@Ti_(3)AlC_(2) gradually *** a carbon-layer thickness of 150 nm,we obtained the lowest resistivity of Ag–C@Ti_(3)AlC_(2) of 29.4135.5×10^(−9)Ω·m,which is half that of Ag–Ti_(3)AlC_(2)(66.7×10^(−9)Ω·m).The thermal conductivity of Ag–C@Ti_(3)AlC_(2) reached a maximum value of 135.5 W·m^(−1)·K^(−1) with a 200-nm carbon coating(~1.8 times that of Ag–Ti_(3)AlC_(2)).These results indicate that the carbon-coating method is a feasible strategy for improving the performance of Ag–C@Ti_(3)AlC_(2) composites.

关键词： silver-based composite titanium aluminum carbide carbon coating interfacial reaction properties

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Recent Advances in Wide-Range Temperature Metal-CO_(2)Batteries:A Mini Review

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Nano-Micro Letters 2025年第4期17卷 435-453页

作者： Xuejing Zhang Ning Zhao Hanqi Zhang Yiming Fan Feng Jin Chunsheng Li Yan Sun Jiaqi Wang Ming Chen Xiaofei Hu School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003People’s Republic of China Engineering Research Center of Energy Storage Materials and Devices Ministry of EducationSchool of ChemistryXi’an Jiaotong UniversityXi’an 710049People’s Republic of China State Key Laboratory for Strength and Vibration of Mechanical Structures Xi’an Jiaotong UniversityXi’an 710049People’s Republic of China 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 215009People’s Republic of China Department of Chemistry and Biochemistry Northern Illinois UniversityDeKalbIL 60115USA School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002People’s Republic of China

The metal-carbon dioxide batteries,emerging as high-energy-density energy storage devices,enable direct CO_(2)utilization,offering promising prospects for CO_(2)capture and utilization,energy conversion,and ***,the electrochemical performance of M-CO_(2)batteries faces significant challenges,particularly at extreme *** such as high overpotential,poor charge reversibility,and cycling capacity decay arise from complex reaction interfaces,sluggish oxidation kinetics,inefficient catalysts,dendrite growth,and unstable *** significant advancements at room temperature,limited research has focused on the performance of M-CO_(2)batteries across a wide-temperature *** review examines the effects of low and high temperatures on M-CO_(2)battery components and their reaction mechanism,as well as the advancements made in extending operational ranges from room temperature to extremely low and high *** discusses strategies to enhance electrochemical performance at extreme temperatures and outlines opportunities,challenges,and future directions for the development of M-CO_(2)batteries.

关键词： M-CO_(2)batteries Wide-range temperature Electrolytes Interfaces Electrode reactions

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Design and Simulation of a Helical Microrobot for Maximum Speed Enhancement by Physical Surface Modification

Design and Simulation of a Helical Microrobot for Maximum Sp...

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2023 IEEE International Conference on Real-Time Computing and robotics, RCAR 2023

作者： Guo, Siyu Wang, Maolin Wang, Huaping Zhong, Shihao Qiu, Yukang Hou, Yaozhen Shi, Qing Fukuda, Toshio Beijing Institute of Technology Intelligent Robotics Institute School of Mechatronical Engineering Beijing100081 China Ministry of Education Key Laboratory of Biomimetic Robots and Systems Beijing Institute of Technology Beijing100081 China Beijing Institute of Technology School of Medical Technology Beijing100081 China Beijing Institute of Technology Beijing Advanced Innovation Center for Intelligent Robots and Systems Beijing100081 China

ISBN: (纸本)9798350327182

Magnetic helical microrobots have great potential in biomedical applications. However, improving their motion performance in the complex and variable in vivo fluid environment remains challenging. Previous researches mainly focus on optimizing the geometric parameter, the evolutionary structure design, and chemical modifications of the robots, with limited attention given to the impact of physical surface modifications on propulsion performance. To address this issue, we design the helical microrobot with different surface physical modifications, including dimpled and raised surfaces, to evaluate their effects on swimming performance. With ANSYS Fluent, we simulated their swimming process in water and found that microrobots with physically modified surfaces experience less resistance and exhibit a larger step-out frequency while swimming. Moreover, our findings suggest that helical microrobots with dimpled surfaces demonstrate superior swimming performance due to their larger gas-liquid interface area compared to those with raised surfaces. © 2023 IEEE.

关键词： Chemical modification

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Various topological phases and their abnormal effects of topological acoustic metamaterials

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Interdisciplinary Materials 2023年第2期2卷 179-230页

作者： Yan-Feng Chen Ze-Guo Chen Hao Ge Cheng He Xin Li Ming-Hui Lu Xiao-Chen Sun Si-Yuan Yu Xiujuan Zhang National Laboratory of Solid-State Microstructures&Department of Materials Science and Engineering Nanjing UniversityNanjingChina Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjingChina Jiangsu Key Laboratory of Artificial Functional Materials Nanjing UniversityNanjingChina School of Materials Science and Intelligent Engineering Nanjing UniversitySuzhouChina School of Mechanical Engineering Nanjing University of Science and TechnologyNanjingChina

The last 20 years have witnessed growing impacts of the topological concept on the branches of physics,including materials,electronics,photonics,and *** describes objects with some global invariant property under continuous deformation,which in mathematics could date back to the 17th century and mature in the 20th *** physics,it successfully underpinned the physics of the Quantum Hall effect in *** date,topology has been extensively applied to describe topological phases in acoustic *** artificial structures,acoustic metamaterials could be well theoretically analyzed,on-demand designed,and easily fabricated by modern techniques,such as three-dimensional *** new theoretical topological models were first discovered in acoustic metamaterials analogous to electronic counterparts,associated with novel effects for acoustics closer to *** this review,we focused on the concept of topology and its realization in airborne acoustic crystals,solid elastic phononic crystals,and surface acoustic wave *** also introduced emerging concepts of non-Hermitian,higher-order,and Floquet topological insulators in *** has been shown that the topology theory has such a powerful generality that among the disciplines from electron to photon and phonon,from electronic to photonics and acoustics,from acoustic topological theory to acoustic devices,could interact and be analogous to fertilize fantastic new ideas and prototype devices,which might find applications in acoustic engineering and noisevibration control engineering in the near future.

关键词： acoustic materials robust propagation topological acoustic metamaterials topological phases

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First-principle prediction of structural and mechanical properties in NbMoTaWRe_(x) refractory high-entropy alloys with experimental validation

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Rare Metals 2022年第10期41卷 3343-3350页

作者： Jin-Yong Mo Yi-Xing Wan Zhi-Bin Zhang Xin Wang Xiao-Qing Li Bao-Long Shen Xiu-Bing Liang School of Chemistry and Chemical Engineering China University of Mining and TechnologyXuzhou221116China Defense Innovation Institute Academy of Military ScienceBeijing100071China Department of Materials Science and Engineering KTH Royal Institute of Technology10044StockholmSweden School of Materials Science and Engineering Jiangsu Key Laboratory for Advanced Metallic MaterialsSoutheast UniversityNanjing211189China

In this work,the effect of Re alloying on the phase composition,crystal structure,and mechanical properties of NbMoTaWRe_(x) (x=0,0.27,0.57,0.92,1.33) refractory high-entropy alloys (RHEAs) were systematically investigated by combining the calculation of phase diagram(CALPHAD),first-principle calculations and *** theoretical predictions showed good consistency with the experimental *** the increase in Re content,the theoretical results showed that all considered alloys have a single body-centered cubic (bcc) structure and the lattice constant and ductility were decreased,while the elastic moduli and hardness were *** avoid extreme brittleness,a strategic suggestion was given for the design of Re-containing RHEAs in the future.

关键词： alloys alloying entropy

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Microstructural and Mechanical Characterizations of Sic-304ss Joints Brazed with Cu-10tih2 Filler

SSRN

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SSRN 2023年

作者： Ma, Qiang Chen, Yongwei Chen, Shujin He, Peng Chen, Xiaojiang Jin, Xiao Zheng, Bin Key Laboratory of Advanced Welding Technology of Jiangsu Province Jiangsu University of Science and Technology Zhenjiang212003 China State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology Harbin150001 China Zhejiang Seleno Science and Technology Co. LTD Jinhua321016 China

A high-quality brazed joint of SiC ceramic and 304 stainless steel (SiC-304SS) was achieved by Cu-10TiH2 brazing alloy. The effects of brazing temperature on the interfacial microstructure and mechanical properties of SiC-304SS was analyzed. The typical interfacial microstructure of joints brazed at 1030 °C for 10 min was 304SS / σ-phase / (Fe, Cr) Ti / Fe2Ti / Cu(s,s) + Fe2Ti + TiC / SiC ceramic. With the brazing temperature increasing, the element Fe continued diffusing into the brazing seam and reacted with the element Ti. Then the width of σ-phase and the amount of Fe2Ti phase became increasing, and Fe2Ti phase became continuous. While, due to the reaction between Fe and Si, a buffer layer formed in SiC-304SS joints brazed at 1040 °C and 1050 °C. The main component of the buffer layer was FeSi2, TiC phases and carbon particles. In addition, the buffer layer contributed to forming a good gradient transition of coefficient of thermal expansion (CTE), releasing residual stress and improving shear strength of the joints. When brazing at 1050 °C for 10 min, the maximum shear strength of the joint was 100 MPa at room temperature and 53 MPa at 600 °C. © 2023, The Authors. All rights reserved.

关键词： Buffer layers

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Inhibition of the cGAS‑STING Pathway Reduces Cisplatin‑Induced Inner Ear Hair Cell Damage

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Neuroscience Bulletin 2025年第3期41卷 359-373页

作者： Ying Sun Shengyu Zou Xiaoxiang Xu Shan Xu Haiying Sun Mingliang Tang Weijia Kong Xiong Chen Zuhong He Department of Otorhinolaryngology-Head and Neck Surgery Zhongnan Hospital of Wuhan UniversityWuhan 430071China State Key Laboratory of Digital Medical Engineering Department of Otolaryngology Head and Neck SurgeryZhongda HospitalSchool of Life Sciences and TechnologyAdvanced Institute for Life and HealthJiangsu Province High-Tech Key Laboratory for Bio-Medical ResearchSoutheast UniversityNanjing 210096China Department of Otolaryngology The First Hospital of China Medical UniversityShenyang 110001China Department of Otorhinolaryngology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Institute for Cardiovascular Science and Department of Cardiovascular Surgery of the First Affiliated Hospital Suzhou Medical College of Soochow UniversitySoochow UniversitySuzhou 215000China

Although cisplatin is a widely used chemotherapeutic agent,it is severely toxic and causes irreversible hearing loss,restricting its application in clinical *** study aimed to determine the molecular mechanism underlying cisplatin-induced ***,we established in vitro and in vivo ototoxicity models of cisplatininduced hair cell loss,and our results showed that reducing STING levels decreased inflammatory factor expression and hair cell *** addition,we found that cisplatin-induced mitochondrial dysfunction was accompanied by cytosolic DNA,which may act as a critical linker between the cyclic GMP-AMP synthesis−stimulator of interferon genes(cGASSTING)pathway and the pathogenesis of cisplatin-induced hearing loss.H-151,a specific inhibitor of STING,reduced hair cell damage and ameliorated the hearing loss caused by cisplatin in *** study underscores the role of cGASSTING in cisplatin ototoxicity and presents H-151 as a promising therapeutic for hearing loss.

关键词： Ototoxicity Hearing loss cGAS-STING Hair cell Mitochondrial dysfunction

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Interface Coupling Photocatalysts Ni-NiO@CNFs/ZnIn2S4-Vs for Efficient Photothermal Synergistic Catalytic Hydrogen Evolution

SSRN

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SSRN 2024年

作者： Zeng, Danni Shen, Tingzhe Hu, Yadong Liu, Fengjiao Liu, Ze Song, Jun Guan, Rongfeng Zhou, Changjian Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology Jiangsu China School of Chemistry and Chemical Engineering Yancheng Institute of Technology Jiangsu China School of Materials Science and Engineering Henan Polytechnic University Jiaozuo China

Photothermal synergistic catalysis is a new type of energy conversion technology. In this study, ZnIn2S4 with S-vacancy (Vs) is coupled with Ni-NiO@CNFs to form an interface coupling photocatalysts with double schottky barrier, double channel and mixed photothermal conversion effect. Theoretical calculation confirms that ΔG*H=-0.07 eV of the sample is close to 0, which promotes H* adsorption and accelerates the formation of H2. The internal photothermal catalysis is achieved by visible-near infrared (Vis-NIR, RT) irradiation. The internal photothermal catalytic hydrogen production rate of the best sample (0.9Ni-NiO@CNFs/ZIS-Vs) is as high as 17.24 mmol·g−1·h−1, and its photothermal conversion efficiency (η) is as high as 61.42%. Its hydrogen production efficiency is 20.33 times that of ZIS-Vs (0.848 mmol·g-1·h-1) under visible light (Vis, RT) conditions. When the Vis-NIR light source is combined with external heating (75 ℃), the hydrogen production efficiency is further improved, and the hydrogen production efficiency (29.20 mmol·g-1·h-1) is 28.91 times that of ZIS-Vs (1.09 mmol·g-1·h-1, Vis-NIR, RT). Further analysis showed that the increase in hydrogen production resulted from the apparent activation energy (Ea) of the catalyst decreasing from 16.7 kJ·mol-1 to 9.28 kJ·mol-1. This study provides a valuable prototype for the design of efficient photothermal synergistic catalytic system. © 2024, The Authors. All rights reserved.

关键词： Hydrogen production

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