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Fully distributed event-triggered affine formation maneuver control over directed graphs

science China(Information sciences) 2023年第6期66卷 287-289页

作者： Zeze CHANG Weihao SONG Junjie WANG Zhongkui LI State Key Laboratory for Turbulence and Complex Systems Department of Mechanics and Engineering ScienceCollege of EngineeringPeking University

Affine formation maneuver control primarily aims to steer a group of agents to simultaneously execute various formation maneuvers such as translations,scales,and *** has several potential applications in many fields,s...

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Spin logic devices based on negative differential resistance -enhanced anomalous Hall effect

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International Journal of Minerals,Metallurgy and Materials 2024年第6期31卷 1437-1448页

作者： Hongming Mou Ziyao Lu Yuchen Pu Zhaochu Luo Xiaozhong Zhang Key Laboratory of Advanced Materials(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China State Key Laboratory of Artificial Microstructure and Mesoscopic Physics School of PhysicsPeking UniversityBeijing 100871China

Owing to rapid developments in spintronics,spin-based logic devices have emerged as promising tools for next-generation computing *** paper provides a comprehensive review of recent advancements in spin logic devices,particularly focusing on fundamental device concepts rooted in nanomagnets,magnetoresistive random access memory,spin–orbit torques,electric-field modu-lation,and magnetic domain *** operation principles of these devices are comprehensively analyzed,and recent progress in spin logic devices based on negative differential resistance-enhanced anomalous Hall effect is *** devices exhibit reconfigur-able logic capabilities and integrate nonvolatile data storage and computing *** current-driven spin logic devices,negative differential resistance elements are employed to nonlinearly enhance anomalous Hall effect signals from magnetic bits,enabling reconfig-urable Boolean logic ***,voltage-driven spin logic devices employ another type of negative differential resistance ele-ment to achieve logic functionalities with excellent cascading *** cascading several elementary logic gates,the logic circuit of a full adder can be obtained,and the potential of voltage-driven spin logic devices for implementing complex logic functions can be *** review contributes to the understanding of the evolving landscape of spin logic devices and underscores the promising pro-spects they offer for the future of emerging computing schemes.

关键词： spin logic spin–orbit torque negative differential resistance full-adder

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Lewis-base ligand-reshaped interfacial hydrogen-bond network boosts CO2 electrolysis

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National science Review 2024年第8期11卷 264-274页

作者： Wangxin Ge Haolan Tao Lei Dong Yu Fan Yanpu Niu Yihua Zhu Cheng Lian Honglai Liu Hongliang Jiang Chunzhong Li Key Laboratory for Ultrafine Materials of Ministry of Education School of Chemical Engineering East China University of Science and Technology Shanghai Engineering Research Center of Hierarchical Nanomaterials School of Materials Science and Engineering East China University of Science and Technology State Key Laboratory of Chemical Engineering Shanghai Engineering Research Center of Hierarchical NanomaterialsSchool of Chemistry and Molecular Engineering East China University of Science and Technology Department of Chemical Engineering School of Chemistry and Chemical Engineering Shanghai Jiao Tong University

Both the catalyst and electrolyte strongly impact the performance of *** substantial progress in catalysts,it remains highly challenging to tailor electrolyte compositions and understand their functions at the catalyst ***,we report that the ethylenediaminetetraacetic acid（EDTA） and its analogs,featuring strong Lewis acid-base interaction with metal cations,are selected as electrolyte additives to reshape the catalyst-electrolyte interface for promoting *** studies reveal that EDTA molecules are dynamically assembled toward interface regions in response to bias potential due to strong Lewis acid-base interaction of EDTA4--K+.As a result,the original hydrogen-bond network among interfacial H2O is disrupted,and a hydrogen-bond gap layer at the electrified interface is *** EDTA-reshaped K+solvation structure promotes the protonation of*CO2to*COOH and suppressing*H2O dissociation to*H,thereby boosting the co-electrolysis of CO2and H2O toward carbon-based *** particular,when 5 mM of EDTA is added into the electrolytes,the Faradaic efficiency of CO on the commercial Ag nanoparticle catalyst is increased from 57.0% to 90.0% at an industry-relevant current density of 500 mA *** importantly,the Lewis-base ligand-reshaped interface allows a range of catalysts（Ag,Zn,Pd,Bi,Sn,and Cu） to deliver substantially increased selectivity of carbon-based products in both H-type and flow-type electrolysis cells.

关键词： CO2 electrolysis electrode-electrolyte interface Lewis acid-base interaction hydrogen-bonding interaction AIMD simulation

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Hydrothermal synthesis of polyimide-linked covalent organic frameworks towards ultrafast and stable cathodic sodium storage

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science China Chemistry 2024年第4期67卷 1300-1310页

作者： Xiya Yang Lei Gong Zhixin Liu Qianjun Zhi Baoqiu Yu Xin Chen Kang Wang Xiaofeng Li Dongdong Qi Jianzhuang Jiang Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline MaterialsDepartment of Chemistry and Chemical EngineeringSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijing 100083China State Key Laboratory of Organic-Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China

Redox-active organic materials are capturing growing attention as cathode materials for sustainable alkaline metal ion ***,the storage of Na+in most organic materials-based cathodes is plagued by low capacity and unsatisfying rate performance due to their low active site densities and limited exposed active ***,two polyimide-linked covalent organic frameworks(COFs),namely HATN-PD-COF and HATN-TAB-COF,were fabricated from hydrothermal synthesis with redoxactive triphenylene-2,3,6,7,10,11-hexacarboxylic acid and aromatic amines as starting *** X-ray diffraction and electron microscopy analysis indicate the high crystalline nature of these COFs with AA stacking configuration and orderly mesoporous tunnel.N_(2) sorption measurement discloses the permanent porosity of these two COFs with a Brunauer-EmmettTeller surface area of 1,065-1,200 m^(2)g^(-1)and a large pore size of 2.0-3.1 *** intermittent titration technique and density functional theory calculations reveal the facile Na+ion diffusion along the mesoporous tunnel of these COFs with a small energy barrier of 0.13-0.40 e *** particular,the as-prepared COFs based-cathodes show ultrafast and stable Na+storage associated with their conjugated electronic structure,highly ordered mesoporous tunnel,robust structure,and redox-active C=N/C=O-rich framework as exemplified by the high reversible capacity of 210 m A h g^(-1)at 200 m A g^(-1),record-high rate performance(195 m A h g^(-1)at a high current density of 10,000 m A g^(-1))among organic electrodes and the capacity retention of nearly 91%at 10,000 m A g^(-1)after 7,000 cycles for HATN-PD-COF.

关键词： covalent organic framework sodium ion battery cathode high rate organic electrode

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Hierarchically porous 3D Y-branched carbon tube grids for high-performance filter capacitors

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science China(Technological sciences) 2025年第4期68卷 49-58页

作者： Gan CHEN Fangming HAN Guowen MENG Bingqing WEI Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and NanotechnologyInstitute of Solid State PhysicsHFIPSChinese Academy of SciencesHefei 230031China Department of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026China Department of Mechanical Engineering University of DelawareNewark DE 19716USA

The rapid development of sustainable green energy,which often generates fluctuating electrical signals,has driven the demand for high-performance filter capacitors in alternating/direct current *** bulky aluminum electrolytic capacitors with electric double-layer capacitors(EDLCs)holds promise for electronics ***,EDLCs face a trade-off between charge storage ability and ion/electron transport ***,we demonstrate three-dimensional Y-branched carbon tube(3D-YCT)grids with a hierarchically porous structure as electrodes for line-filtering *** branching patterns and positions within the 3D-YCT are precisely tailored through the nanochannels inside anodic aluminum oxide *** integrated 3D Y-branched CT arrays provide unobstructed pathways for fast frequency response and extensive surfaces for high *** resulting 3D-YCT-based EDLC achieves a desirable specific areal capacitance(C_(A))of 3.6 mF cm^(-2)with a phase angle of-80°at 120 Hz,outperforming most reported line-filtering EDLCs and demonstrating excellent line-filtering *** findings offer valuable insights for constructing miniaturized filter capacitors.

关键词： hierarchically porous structures three-dimensional Y-branched carbon tube grids fast frequency response electric double-layer capacitors AC line-filtering

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Hollow MnO_(2)-based multifunctional nanoplatform for enhanced tumor chemodynamic therapy

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science China Materials 2025年第1期68卷 292-302页

作者： Dejie Ge Debao Ren Yamin Duan Xuan Luo Shuailin He Wenjun Qin Fei Wang Wen Yin Lixin Ma Yong Yang Cheng Zhang State Key Laboratory of Biocatalysis and Enzyme Engineering College of Life SciencesHubei UniversityWuhan 430062China Hubei Key Laboratory of Industrial Biotechnology College of Life SciencesHubei UniversityWuhan 430062China College of Health Science and Engineering Hubei UniversityWuhan 430062China School of Materials Science and Engineering Hubei UniversityWuhan 430062China

The inherent tumor microenvironment(TME)of hypoxia and high glutathione(GSH)hinders the production of reactive oxygen species(ROS),yet which are crucial roles to make the oxygen-independent chemodynamic therapy(CDT)***,we constructed hyaluronic acid(HA)-modified and peroxymonosulfate(PMS)-loaded hollow manganese dioxide(HMn)nanoparticles for not only TME-response drug release but also the distinct ROS donors to strengthen *** enriched in the tumor site,the prepared nanotheranostic agent(HA@HMn/PMS)depleted local GSH to reduce MnO_(2) to Mn^(2+),followed by generating•OH andSO_(4)^(−)through Fenton-like reaction and activation of PMS,*** bring in of•SO_(4)^(−),a rare radical possessing exceptional oxidizing ability and oxygen-independent property,breaks the limitations of traditional ROS and causes serious damage to tumor *** a xenograft mouse tumor model,detailed studies demonstrated that HA@HMn/PMS can significantly inhibit tumor *** work inspires the enormous potential of CDT in investigating the application of multifunctional nanosystems by combining the consumption of GSH and the synergistic effect of multiple radicals in oncotherapy.

关键词： hollow manganese dioxide sulfate radical glutathione chemodynamic therapy tumor therapy

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Highly efficient chemicalproductionviaelectrified,transient high-temperature synthesis

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escience 2024年第4期4卷 41-53页

作者： Yichen Dong Yi Rao Hanwen Liu Hao Zhang Rong Hu Yingquan Chen Yonggang Yao Haiping Yang State Key Laboratory of Coal Combustion School of Energy and Power EngineeringHuazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

In response to the current energy and environmental challenges,reducing or replacing reliance on fossil fuels and striving for carbon neutrality seems to be the only viable ***,a cutting-edge,eco-friendly method of chemical synthesis via transient Joule heating(JH)demonstrated significant promise across various domains,including methane reforming,ammonia synthesis,volatile organic compounds removal,plastic recycling,the synthesis of functional carbon materials from repurposed solid waste,*** this review,the advantages,and latest developments in thermochemical synthesis by flash and transient JH are comprehensively *** the ongoing heating process of conventional furnaces that consume fossil fuels,dynamic and transient JH can get significantly higher reaction rates,energy efficiency,flexibility,and ***,the transient reaction mechanism,data science optimization,and scale-up production models are discussed,and prospects for the integration of the electrified chemical industry with renewable energy for carbon neutrality and long-term energy storage are also envisioned.

关键词： Electrified chemicalsynthesis Transient heating Low-carbon production Gas-phasereaction Solid waste

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A theoretical and experimental study of deformation mechanism dictated by disclination-dislocation coupling in Mg alloys at different temperatures

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材料科学技术（英文版） 2025年第5期208卷 176-188页

作者： Chunfeng Du Yipeng Gao Yizhen Li Quan Li Min Zha Cheng Wang Hailong Jia Hui-Yuan Wang Key Laboratory of Automobile Materials of Ministry of Education&School of Materials Science and Engineering Nanling CampusJilin UniversityChangchun 130025China Key Laboratory of Automobile Materials of Ministry of Education&School of Materials Science and Engineering Nanling CampusJilin UniversityChangchun 130025China International Center of Future Science Jilin UniversityChangchun 130012China International Center of Future Science Jilin UniversityChangchun 130012China State Key Lab of Superhard Materials and Key Laboratory of Material Simulation Methods&Software of Ministry of Education College of PhysicsJilin UniversityChangchun 130012China Key Laboratory of Automobile Materials of Ministry of Education&School of Materials Science and Engineering Nanling CampusJilin UniversityChangchun 130025China International Center of Future Science Jilin UniversityChangchun 130012China State Key Laboratory of Reliability and Intelligence of Electrical Equipment School of Material Science and EngineeringHebei University of TechnologyTianjin 300130China

Dislocations and disclinations are fundamental topological defects within crystals,which determine the mechanical properties of metals and *** their important roles in multiple physical mecha-nisms,e.g.,dynamic recovery and grain boundary mediated plasticity,the intrinsic coupling and corre-lation between disclinations and dislocations,and their impacts on the deformation behavior of metallic materials still remain obscure,partially due to the lack of a theoretical tool to capture the rotational na-ture of *** using a Lie-algebra-based theoretical framework,we obtain a general equation to quantify the intrinsic coupling of disclinations and *** quasi in-situ electron backscat-ter diffraction characterizations and disclination/dislocation density analyses in Mg alloys,the generation,coevolution and reactions of disclinations and dislocations during dynamic recovery and superplastic de-formation have been quantitatively *** has been demonstrated that the obtained governing equa-tion can capture multiple physical processes associated with mechanical deformation of metals,e.g.,grain rotation and grain boundary migration,at both room temperature and high *** establishing the disclination-dislocation coupling equation within a Lie algebra description,our work provides new insights for exploring the coevolution and reaction of disclinations/dislocations,with profound implica-tions for elucidating the microstructure-property relationship and underlying deformation mechanisms in metallic materials.

关键词： Magnesium alloys Dislocations Grain boundaries Plastic deformation Grain rotation Disclination-dislocation coupling

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Pd/N-doped carbon dots@dendritic mesoporous silica nanospheres:A highly efficient catalyst for the hydrogenation of 4-nitrophenol

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Nano Research 2024年第9期17卷 7967-7974页

作者： Weiruo Liu Yanbin Zhu Jiwei Wang Haisong Feng Yunpu Zhai Wei Li Dongyuan Zhao College of Chemistry Zhengzhou University100 Kexue AvenueZhengzhou 450001China Department of Chemistry Laboratory of Advanced MaterialsShanghai Key Laboratory of Molecular Catalysis and Innovative Materialsand State Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai 200433China State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China

Highly dispersed Pd/N-doped carbon dots(Pd/NCDs)were successfully immobilized in the mesoporous channels of amino-functionalized dendritic mesoporous silica nanospheres(NMS).The synthesized Pd/NCDs@NMS catalyst exhibits outstanding performance in the catalytic reduction of 4-nitrophenol(4-NP),achieving a turnover frequency of 1461.8 mol·molPd^(-1)·h^(-1),with the conversion rate remaining above 80%after 11 *** and density functional theory calculations reveal that the NCDs significantly affect the electronic structure of Pd nanoparticles,leading to changes in the energy barriers for the adsorption of 4-NP at the Pd sites and the conversion of 4-NP reaction intermediates,which is a key factor contributing to the catalytic *** study offers a new strategy for synthesizing carbon-dot-modified metal-based catalysts.

关键词： palladium nanoparticles nitrogen-doped carbon dots dendritic mesoporous silica catalytic hydrogenation 4-nitrophenol reduction

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Design Method of Reversely Switched Dynistor Based Pulse Circuit Without Magnetic Switch

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CSEE Journal of Power and Energy Systems 2023年第1期9卷 306-314页

作者： Yicheng Pi Lin Liang Xiaoxue Yan State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China

In the reversely switched dynistor(RSD)-based pulse power circuits,a magnetic switch is usually necessary to be applied together with a main *** occupies space and needs a magnetic *** this paper,a method of designing a RSD-based pulse circuit without a magnetic switch is *** the pulse circuit,a RBDT(reverse blocking diode thyristor)is used to separate the two capacitors and provide an energy *** pre-charge time of the RSD can be guaranteed by the energy conversion between the capacitors and inductors,instead of the saturation of the magnetic *** addition,the energy which is reused to trigger the RSD is based on an *** pulse circuit is evaluated by simulations and practical *** to the experimental results,the factors affecting the load pulse current and triggering of the RSD and RBDT are ***,a method to reduce the current in the trigger switch,which is a potential problem in the pulse circuit,is proposed.

关键词： Magnetic switch pulse power circuit reversely switched dynistor(RSD) reverse blocking diode thyristor(RBDT)

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