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中国科学：化学 2024年第3期54卷 277-286页

作者：蒋尚达高松付雪峰华南理工大学自旋科技研究院广州511442 中山大学化学学院广州510275 北京大学化学与分子工程学院北京100871 国家自然科学基金委员会化学科学学部北京100085

本文从化学过程和分子材料的自旋效应、分子自旋材料新物态、分子自旋诊疗药物以及自旋化学理论计算等方面介绍了自旋化学的概念和研究领域,并对自旋化学面临的挑战和未来的重点研究方向进行了讨论.

关键词：交叉学科自旋化学分子磁性自旋效应自旋材料

Approaching the uniaxiality of magnetic anisotropy in singlemolecule magnets

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Science China Chemistry 2023年第3期66卷 683-702页

作者： Chen Wang Yin-Shan Meng shang-da jiang Bing-Wu Wang Song Gao School of Chemistry Chemical Engineering and Life ScienceWuhan University of TechnologyWuhan 430070China Beijing National Laboratory of Molecular Science Beijing Key Laboratory for Magnetoeletric Materials and DevicesCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalian 116024China Spin-X Institute School of Chemistry and Chemical EngineeringState Key Laboratory of Luminescent Materials and DevicesGuangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional MaterialsSouth China University of TechnologyGuangzhou 510641China

Single-molecule magnets(SMMs),which can exhibit slow magnetization relaxation and bulk-magnet-like hysteresis of purely molecular origin,are promising candidates for high-density information storage,molecular spintronics,and quantum *** realize their applications,it is crucial to improve the blocking temperature(TB)and the effective relaxation barrier(Ueff).Three decades of multidisciplinary research have yielded distinct SMMs with a state-of-the-art Ueff of up to 2,000 K and a TB of up to the liquid nitrogen *** strategies have been investigated and summarized,which revealed that enhancing the uniaxiality of magnetic anisotropy is critical for constructing high-performance ***,magnetic anisotropy,a key property that connects the molecular structure symmetry and performance of SMMs,plays a fundamental role in dictating magneto-structural *** and employing magnetic anisotropy would be significantly beneficial for rationally designing high-performance *** review focuses on the magnetic anisotropy of *** illustrate the origin and manifestation of magnetic anisotropy in mononuclear 3d-and 4f-block metal *** then introduce developed approaches to investigate magnetic anisotropy both theoretically and *** SMMs by optimizing uniaxial magnetic anisotropy through lanthanide metallocene,symmetry controlling,and low-coordination approaches are ***,the remaining challenges and opportunities in this field will be discussed.

关键词： single-molecule magnets magnetic anisotropy uniaxiality lanthanide

Electric field manipulation enhanced by strong spin-orbit coupling: promoting rare-earth ions as qubits

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National Science Review 2020年第10期7卷 1557-1563页

作者： Zheng Liu Ye-Xin Wang Yu-Hui Fang Si-Xue Qin Zhe-Ming Wang shang-da jiang Song Gao Beijing National Laboratory of Molecular Science State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsBeijing Key Laboratory of Magnetoelectric Materials and Devices College of Chemistry and Molecular Engineering Peking University Department of Physics Chongqing University Beijing Academy of Quantum Information Sciences School of Chemistry and Chemical Engineering South China University of Technology

Quantum information processing based on magnetic ions has potential for applications as the ions can be modified in their electronic properties and assembled by a variety of chemical methods. For these systems to achieve individual spin addressability and high energy efficiency, we exploited the electric field as a tool to manipulate the quantum behaviours of the rare-earth ion which has strong spin-orbit coupling. A Ce:YAG single crystal was employed with considerations to the dynamics and the symmetry requirements. The Stark effect of the Ce;ion was observed and measured. When demonstrated as a quantum phase gate, the electric field manipulation exhibited high efficiency which allowed up to 57 π/2 operations before decoherence with optimized field direction. It was also utilized to carry out quantum bang-bang control, as a method of dynamic decoupling, and the refined Deutsch-Jozsa algorithm. Our experiments highlighted rare-earth ions as potentially applicable qubits because they offer enhanced spin-electric coupling which enables high-efficiency quantum manipulation.

关键词： quantum coherent manipulation spin-orbit coupling spin-electric coupling rare-earth ions qubits

TransTM:A device-free method based on time-streaming multiscale transformer for human activity recognition

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Defence Technology（防务技术） 2024年第2期32卷 619-628页

作者： Yi Liu Weiqing Huang shang jiang Bobai Zhao Shuai Wang Siye Wang Yanfang Zhang Institute of Information Engineering Chinese Academy of Sciences School of Cyber SecurityUniversity of Chinese Academy of SciencesBeijingChina School of Information Management Beijing Information Science and Technology UniversityBeijingChina

RFID-based human activity recognition(HAR)attracts attention due to its convenience,noninvasiveness,and privacy *** RFID-based HAR methods use modeling,CNN,or LSTM to extract features ***,they have shortcomings:1)requiring complex hand-crafted data cleaning processes and 2)only addressing single-person activity recognition based on specific RF *** solve these problems,this paper proposes a novel device-free method based on Time-streaming Multiscale Transformer called *** model leverages the Transformer's powerful data fitting capabilities to take raw RFID RSSI data as input without ***,we propose a multiscale convolutional hybrid Transformer to capture behavioral features that recognizes singlehuman activities and human-to-human *** with existing CNN-and LSTM-based methods,the Transformer-based method has more data fitting power,generalization,and ***,using RF signals,our method achieves an excellent classification effect on human behaviorbased classification *** results on the actual RFID datasets show that this model achieves a high average recognition accuracy(99.1%).The dataset we collected for detecting RFID-based indoor human activities will be published.

关键词： Human activity recognition RFID Transformer

Scale effect removal and range migration correction for hypersonic target coherent detection

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Journal of Systems Engineering and Electronics 2024年第1期35卷 14-23页

作者： WU shang SUN Zhi jiang Xingtao ZHANG Haonan DENG jiangyun LI Xiaolong CUI Guolong School of Information and Communication Engineering University of Electronic Science and Technology of ChinaChengdu 611731China

The detection of hypersonic targets usually confronts range migration(RM)issue before coherent integration(CI).The traditional methods aiming at correcting RM to obtain CI mainly considers the narrow-band radar ***,with the increasing requirement of far-range detection,the time bandwidth product,which is corresponding to radar’s mean power,should be promoted in actual ***,the echo signal generates the scale effect(SE)at large time bandwidth product situation,influencing the intra and inter pulse integration *** eliminate SE and correct RM,this paper proposes an effective algorithm,i.e.,scaled location rotation transform(ScLRT).The ScLRT can remove SE to obtain the matching pulse compression(PC)as well as correct RM to complete CI via the location rotation transform,being implemented by seeking the actual rotation *** to the traditional coherent detection algorithms,Sc LRT can address the SE problem to achieve better detection/estimation *** last,this paper gives several simulations to assess the viability of ScLRT.

关键词： hypersonic target detection coherent integration(CI) scale effect(SE)removal range migration(RM)correction scaled location rotation transform(ScLRT)

Electrocatalysts with atomic-level site for nitrate reduction to ammonia

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Journal of Energy Chemistry 2024年第9期96卷 642-668页

作者： Shuai Yin Rong Cao Yifan Han Jiachangli shang Jing Zhang Wei jiang Guigao Liu National Special Superfine Powder Engineering Research Center School of Chemistry and Chemical EngineeringNanjing University of Science and TechnologyNanjing 210094JiangsuChina School of Pharmacy Jiangsu UniversityZhenjiang 212013JiangsuChina

Ammonia(NH_(3))is an important raw material for modern agriculture and industry,being widely demanded to sustain the sustainable development of modern ***,the industrial production methods of NH_(3),such as the traditional Haber-Bosch process,have drawbacks including high energy consumption and significant carbon dioxide *** recent years,the electrocatalytic nitrate reduction reaction(NO_(3)RR)powered by intermittent renewable energy sources has gradually become a multidisciplinary research hotspot,as it allows for the efficient synthesis of NH_(3)under mild *** this review,we focus on the research of electrocatalysts with atomic-level site,which have attracted attention due to their extremely high atomic utilization efficiency and unique structural characteristics in the field of NO_(3)***,we introduce the mechanism of nitrate reduction for ammonia synthesis and discuss the in-situ characterization techniques related to the mechanism ***,we review the progress of the electrocatalysts with atomic-level site for nitrate reduction and explore the structure-activity relationship to guide the rational design of efficient ***,the conclusions of this review and the challenges and prospective of this promising field are presented.

关键词： Ammonia synthesis Nitrate reduction Electrocatalysts with atomic-level site Reaction mechanism In-situ characterization techniques

Manipulation of Molecular Qubits by Isotope Effect on Spin Dynamics

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CCS Chemistry 2021年第9期3卷 2548-2556页

作者： Jing Li Shi-Jie Xiong Chun Li Biaobing Jin Yi-Quan Zhang shang-da jiang Zhong-Wen Ouyang Zhenxing Wang Xing-Long Wu Johan van Tol You Song State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023 National Laboratory of Solid State Microstructures Department of PhysicsNanjing UniversityNanjing 210093 Research Institute of Superconductor Electronics(RISE) School of Electronic Science and EngineeringNanjing UniversityNanjing 210093 jiangsu Key Laboratory for NSLSCS School of Physical Science and TechnologyNanjing Normal UniversityNanjing 210023 National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsBeijing Key Laboratory for Magnetoelectric Materials and DevicesCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871 Wuhan National High Magnetic Field Center&School of Physics Huazhong University of Science and TechnologyWuhan 430074 National High Magnetic Field Laboratory Florida State UniversityTallahasseeFL 32310

Controlling spin behavior via external stimuli is a key route to develop molecular spintronics ***,temperature,pressure,chemicals,and electric field are the possible ***,we report a new method,the isotope effect,to control spin behavior in molecule magnet *** can not only control the relaxation of magnetization,but also regulate the spin lifetime of quantum coherence.

关键词： molecule-based magnetism molecular qubits isotope effect spin–vibration coupling quantum coherence

Investigation on the vortical structures by the Liutex method in turbulent channels at Re_(τ)=180 with scalloped and triangular riblet control

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Journal of Hydrodynamics 2024年第1期36卷 35-52页

作者： Zhang-dan Yu shang jiang Hai-dong Yu Bi-yu Pang Xin Dong Yi-qian Wang School of Mathematical Sciences Soochow UniversitySuzhou215006China Beijing Institute of Astronautical System Engineering Beijing100076China

Riblets are a series of small protrusions formed along the flow direction,which have been extensively studied as a passive turbulent drag reduction *** and numerical simulations have shown that well-designed riblets can significantly reduce drag in turbulent flows,making them highly promising and valuable for various *** this study,we focus on a scalloped riblet,which is designed by smoothly connecting two third-order polynomials,and thus the sharpness of the tip and the curvature of the valley can be well *** conduct direct numerical simulations of turbulent channel with smooth plate,scalloped riblet-mounted and triangular riblet-mounted *** in wall units of W^(+)=20 and height-width ratio ofγ=0.5 are selected for both riblet *** with the smooth plate case,the scalloped riblet case achieves an 8.68%drag reduction,while the triangular riblet case achieves a 4.79%drag *** obtained drag reduction rate of the triangular riblet is consistent with previous experiments and simulations,and the results indicate that the scalloped riblet is more effective in reducing drag and deserves further *** compare turbulent statistics of the scalloped riblet case with those of the triangular riblet *** mean velocity profiles of riblets are similar,but both the Reynolds shear stress and second-order statistics of velocity fluctuations and Liutex are significantly reduced in the scalloped riblets controlled turbulent channel,indicating that the scalloped riblet can more effectively suppress the spanwise and wall-normal turbulent intensity near the *** also compare the pre-multiplied spectra of streamwise velocity and streamwise Liutex component for the three cases to investigate the energy distribution and characteristics of Liutex *** Liutex vortex identification method is also utilized to analyze the instantaneous flow field,which provides insights into the flow field and could be bene

关键词： Liutex vector riblet drag reduction tip sharpness turbulent channel scalloped

Diverse functions of sox9 in liver development and homeostasis and hepatobiliary diseases

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Genes & Diseases 2024年第4期11卷 170-187页

作者： Taiyu shang Tianyi jiang Xiaowen Cui Yufei Pan Xiaofan Feng Liwei Dong Hongyang Wang School of Life Sciences Institute of Metabolism and Integrative BiologyFudan UniversityShanghai 200438China National Center for Liver Cancer The Naval Medical UniversityShanghai 201805China International Cooperation Laboratory on Signal Transduction Eastern Hepatobiliary Surgery InstituteThe Second Military Medical UniversityShanghai 200438China Laboratory of Signaling Regulation and Targeting Therapy of Liver Cancer Second Military Medical University&Ministryof EducationShanghai 200438China

The liver is the central organ for digestion and detoxification and has unique metabolic and regenerative *** hepatobiliary system originates from the foregut endoderm,in which cells undergo multiple events of cell proliferation,migration,and differentiation to form the liver parenchyma and ductal system under the hierarchical regulation of transcription *** on liver development and diseases have revealed that SRY-related high-mobility group box 9(SOx9)plays an important role in liver embryogenesis and the progression of hepatobiliary ***9 is not only a master regulator of cell fate determination and tissue morphogenesis,but also regulates various biological features of cancer,including cancer stemness,invasion,and drug resistance,making Sox9 a potential biomarker for tumor prognosis and *** review systematically summarizes the latest findings of sox9 in hepatobiliary development,homeostasis,and *** also highlight the value of sox9 as a novel biomarker and potential target for the clinical treatment of major liverdiseases.

关键词： Biliary system Cancer Homeostasis Liver diseases SOX9

Heterostructured Co_(3)Se_(4)/CoSe_(2)@C nanoparticles attached on three-dimensional reduced graphene oxide as a promising anode towards Li-ion batteries

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Frontiers of Materials Science 2024年第2期18卷 101-115页

作者： Mingjun Pang Zhaoyang Song Miaomiao Mao shang jiang Ruxia Zhang Runwei Wang jianguo Zhao Engineering Research Center of Coal-based Ecological Carbon Sequestration Technology of the Ministry of Education Shanxi Datong UniversityDatong 037009China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012China

In situ carbon-coated Co_(3)Se_(4)/CoSe_(2)(Co_(x)Se_(y))nanoparticles(NPs)attached on three-dimensional(3D)reduced graphene oxide(rGO)sheets were skillfully developed in this work,which involved the environment-friendly hydrothermal method,freeze drying,and selenide *** the structure,the glucose-derived carbon layer exhibited significantly homogeneous dispersion under an argon *** structure not only has enhanced stability,but also can effectively mitigate the volume swell of Co_(x)Se_(y) *** resulted Co_(3)Sea/CoSe_(2)@C/rGO(CSe@C/rGO)exhibited a specific surface area(SSA)of 240.9 m^(2)·g^(-1),offering more electrochemically active sites for the storage of energy related to lithium *** rGO matrix held exceptional flexibility and functional structural rigidity,facilitating the swift ion intercalation and ensuring the high conductivity and recyclability of the *** applied to anodes designed for lithium-ion batteries(LiBs),this material demonstrated distinguished rate and ultra-high reversible capacity(872.98 mA·h·g^(-1) at 0.5 A·g^(-1)).Meanwhile,its capacity retention reached 119.5%after 500 cycles at 2 A·g^(-1),with a coulombic efficiency of 100%.This work potentially paves the way for generating fast and powerful metal selenide anodes and initiating LiBs with good performance.

关键词： CSe@C/rGO lithium-ion battery reduced graphene oxide electrochemicalperformance heterostructure