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Chinese Chemical Letters 2025年第1期36卷 374-380页

作者： Panpan Wang Hongbao Fang Mengmeng Wang Guandong Zhang Na Xu Yan Su Hongke Liu Zhi Su Jiangsu Collaborative innovation center of Biomedical Functional Materials College of Chemistry and Materials ScienceNanjing Normal UniversityNanjing 210023China

Metal complexes hold significant promise in tumor diagnosis and ***,their potential applications in photodynamic therapy(PDT)are hindered by issues such as poor photostability,low yield of reactive oxygen species(ROS),and aggregation-induced ROS *** address these challenges,we present a molecular self-assembly strategy utilizing aggregation-induced emission(AIE)conjugates for metal *** a proof of concept,we synthesized a mitochondrial-targeting cyclometalated Ir(Ⅲ)photosensitizer *** approach significantly enhances the photodynamic effect while mitigating the dark toxicity associated with AIE ***-TPE readily self-assembles into nanoaggregates in aqueous solution,leading to a significant production of ROS upon light *** Ir-TPE triggers multiple modes of death by excessively accumulating ROS in the mitochondria,resulting in mitochondrial DNA *** damage can lead to ferroptosis and autophagy,two forms of cell death that are highly cytotoxic to cancer *** aggregation-enhanced photodynamic effect of Ir-TPE significantly enhances the production of ROS,leading to a more pronounced cytotoxic *** vitro and in vivo experiments demonstrate this aggregation-enhanced PDT approach achieves effective in situ tumor *** study not only addresses the limitations of metal complexes in terms of low ROS production due to aggregation but also highlights the potential of this strategy for enhancing ROS production in PDT.

关键词： Metal complex AIEgens Mitochondria targeting Enhanced photodynamic therapy Anticancer agent

Actuator fault diagnosis and severity identification of turbofan engines for steady-state and dynamic conditions

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Chinese Journal of Aeronautics 2025年第1期38卷 427-443页

作者： Yuzhi CHEN Weigang ZHANG Zhiwen ZHAO Elias TSOUTSANIS Areti MALKOGIANNI Yanhua MA Linfeng GOU School of Power and Energy Northwestern Polytechnical UniversityXi’an 710129China Sichuan Gas Turbine Research Establishment Aero Engine Corporation of ChinaChengdu 610500China Propulsion and Space Research center Technology Innovation InstituteAbu Dhabi 9639United Arab Emirates School of Integrated Circuits Dalian University of TechnologyDalian 116023China

Actuator faults can be critical in turbofan engines as they can lead to stall,surge,loss of thrust and failure of speed ***,fault diagnosis of gas turbine actuators has attracted considerable attention,from both academia and ***,the extensive literature that exists on this topic does not address identifying the severity of actuator faults and focuses mainly on actuator fault detection and *** addition,previous studies of actuator fault identification have not dealt with multiple concurrent faults in real time,especially when these are accompanied by sudden failures under dynamic *** study develops component-level models for fault identification in four typical actuators used in high-bypass ratio turbofan engines under both dynamic and steady-state conditions and these are then integrated with the engine performance model developed by the *** research results reported here present a novel method of quantifying actuator faults using dynamic effect *** maximum error for each actuator is less than0.06%and 0.07%,with average computational time of less than 0.0058 s and 0.0086 s for steady-state and transient cases,*** results confirm that the proposed method can accurately and efficiently identify concurrent actuator fault for an engine operating under either transient or steady-state conditions,even in the case of a sudden *** research results emonstrate the potential benefit to emergency response capabilities by introducing this method of monitoring the health of aero engines.

关键词： Turbofan engines Actuators Real time systems Fault identification Steady-state conditions Dynamic conditions

Recent advances in metal-loaded MOFs photocatalysts:From single atom,cluster to nanoparticle

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Chinese Chemical Letters 2025年第1期36卷 68-79页

作者： Shenglan Zhou Haijian Li Hongyi Gao Ang Li Tian Li Shanshan Cheng Jingjing Wang Jitti Kasemchainan Jianhua Yi Fengqi Zhao Wengang Qu Advanced innovation center for Materials Genome Engineering Beijing Key Laboratory of Function Materials for Molecule&Structure ConstructionSchool of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083China National Key Laboratory of Energetic Materials Xi’an Modern Chemistry Research InstituteXi’an 710065China Shunde innovation School University of Science and Technology BeijingShunde 528399China School of Materials Science and Engineering Suzhou University of Science and TechnologySuzhou 215009China Department of Chemical technology Chulalongkorn UniversityBangkok 10330Thailand

Photocatalysis is widely regarded as a highly promising sustainable technique for addressing the challenges posed by environmental pollution and energy *** recent years,metal-loaded MOFs has become a rising star within the domain of photocatalysis due to its high specific surface area and porosity,adjustable structure,diverse and abundant catalytic components,which has exhibited excellent photocatalytic activity and exhibit great potential in a range of *** this paper,the principles for evaluating the photocatalytic performance of MOFs-based materials were firstly introduced,and some typical examples were also listed *** with this,particular emphasis is paid to the main factors affecting the photocatalytic performance of metal-loaded *** the synthesis and design strategies of MOFs loaded metal entities of varying sizes(single atoms,nanoclusters,and nanoparticles),and their applications in photocatalytic CO_(2)reduction,hydrogen production,photooxidation and photocatalytic hydrogenation were summarized and ***,the opportunities and challenges faced in this kind of MOFs-based composites were analyzed from different *** report is expected to help researchers design and develop high-performance MOFs-based photocatalytic materials.

关键词： Metal-loaded MOFs Photocatalysis Single atom catalysts Nanoclusters Nanoparticles

Dynamic damage characteristics and control mechanism of rocks anchored by constant resistance and energy absorption material

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International Journal of Mining Science and technology 2025年第1期35卷 57-67页

作者： Bei Jiang Kunbo Wu Qi Wang Yetai Wang Wenrui Wu Yaoxia Feng Yanbo Zhang State Key Laboratory for Tunnel Engineering China University of Mining&Technology-BeijingBeijing 100083China State Key Laboratory of Explosion Science and Safety Protection Beijing Institute of TechnologyBeijing 100081China Collaborative innovation center of Green Development and Ecological Restoration of Mineral Resources North China University of Science and TechnologyTangshan 063210China

With resource exploitation and engineering construction gradually going deeper,the surrounding rock dynamic disaster becomes frequent and *** anchorage support is a common control method of surrounding rock in underground *** study the dynamic damage characteristics of anchored rock and the energy absorption control mechanism of dynamic disasters,a new type of constant resistance and energy absorption(CREA)material with high strength,high elongation and high energy absorption characteristics is developed.A contrast test of rockbursts in anchored rock with different support materials is *** test results show that the surface damage rates and energy release degree of anchored rock with common bolt(CB)and CREA are lower than those of unanchored rock,*** total energy,average energy and maximum energy released by CREA anchored rock are 30.9%,94.3%and 84.4%lower than those of CB anchored *** with unanchored rock,the rockburst peak stress in the CREA anchored rock is increased by 39.9%,and the rockburst time is delayed by 53.2%.Based on the rockburst energy calculation model,the evolution law of rockburst peak stress and energy release is *** control mechanism of CREA support units on rock dynamic failure is clarified.

关键词： Constant resistance and energy absorption Anchored rock Rockburst Peak stress Control mechanism

Research status and prospects of the fractal analysis of metal material surfaces and interfaces

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 20-38页

作者： Qinjin Dai Xuefeng Liu Xin Ma Shaojie Tian Qinghe Cui Beijing Advanced innovation center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation University of Science and Technology BeijingBeijing 100083China Laboratory for Advanced Materials Processing of Ministry of Education University of Science and Technology BeijingBeijing 100083China School of Mechanical and Electrical Engineering Xinjiang Institute of EngineeringUrumqi 830023China

As a mathematical analysis method,fractal analysis can be used to quantitatively describe irregular shapes with self-similar or self-affine *** analysis has been used to characterize the shapes of metal materials at various scales and *** methods make it difficult to quantitatively describe the relationship between the regular characteristics and properties of metal material surfaces and ***,fractal analysis can be used to quantitatively describe the shape characteristics of metal materials and to establish the quantitative relationships between the shape characteristics and various properties of metal *** the perspective of two-dimensional planes and three-dimensional curved surfaces,this paper reviews the current research status of the fractal analysis of metal precipitate interfaces,metal grain boundary interfaces,metal-deposited film surfaces,metal fracture surfaces,metal machined surfaces,and metal wear *** relationship between the fractal dimensions and properties of metal material surfaces and interfaces is *** from three perspectives of fractal analysis,namely,research scope,image acquisition methods,and calculation methods,this paper identifies the direction of research on fractal analysis of metal material surfaces and interfaces that need to be *** is believed that revealing the deep influence mechanism between the fractal dimensions and properties of metal material surfaces and interfaces will be the key research direction of the fractal analysis of metal materials in the future.

关键词： metal material surfaces and interfaces fractal analysis fractal dimension homogeneity

Mitigating methodology of hardware non-ideal characteristics for non-volatile memory based neural networks

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Science China(Information Sciences) 2025年第2期68卷 307-321页

作者： Lixia HAN Peng HUANG Yijiao WANG Zheng ZHOU Haozhang YANG Yiyang CHEN Xiaoyan LIU Jinfeng KANG School of Integrated Circuits Peking University Beijing Advanced innovation center for Integrated Circuits School of Integrated Circuit Science and Engineering Beihang University

Non-volatile memory-based computing-in-memory(nvCIM) paradigm has been extensively studied to boost the energy efficiency of neural network accelerators in edge applications. However, the degradation of inference accuracy induced by the non-ideal characteristics across circuits, arrays, and devices is becoming a crucial issue. In this work, we establish a hardware characteristic behavior model to analyze the impact of nvCIM non-ideal characteristics on neural network *** we propose a hardware aware training and weight mapping correction methods to mitigate inference accuracy *** simulation verification, about 95% inference accuracy degradation is recovered by adopting the proposed mitigation method for various non-ideal characteristics and various neural network models. The feasibility of the proposed method is further proved in an experimental example with a flash-based LeNet recognition system.

关键词： computing in memory neural network accelerators non-volatile memory hardware non-ideal characteristics software-hardware co-design

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Emerging natural clay-based materials for stable and dendrite-free lithium metal anodes: A review

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Chinese Chemical Letters 2025年第2期36卷 161-172页

作者： Haobo Wang Fei Wang Yong Liu Zhongxiu Liu Yingjie Miao Wanhong Zhang Guangxin Wang Jiangtao Ji Qiaobao Zhang School of Materials Science and Engineering Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal new Materials and Advanced Processing Technology Henan University of Science and Technology Faculty of Engineering Huanghe Science and Technology University Henan Key Laboratory of Non-Ferrous Materials Science & Processing technology Henan University of Science and Technology College of Agricultural Equipment Engineering Henan University of Science and Technology State Key Laboratory of Physical Chemistry of Solid Surfaces College of Materials Xiamen University

Lithium metal is one of the most promising anodes for lithium batteries because of their high theoretical specific capacity and the low electrochemical potential. However, the commercialization of lithium metal anodes(LMAs) is facing significant obstacles, such as uncontrolled lithium dendrite growth and unstable solid electrolyte interface, leading to inferior Coulombic efficiency, unsatisfactory cycling stability and even serious safety issues. Introducing low-cost natural clay-based materials(NCBMs) in LMAs is deemed as one of the most effective methods to solve aforementioned issues. These NCBMs have received considerable attention for stabilizing LMAs due to their unique structure, large specific surface areas, abundant surface groups, high mechanical strength, excellent thermal stability, and environmental friendliness. Considering the rapidly growing research enthusiasm for this topic in the last several years, here, we review the recent progress on the application of NCBMs in stable and dendrite-free *** different structures and modification methods of natural clays are first summarized. In addition, the relationship between their modification methods and nano/microstructures, as well as their impact on the electrochemical properties of LMAs are systematically discussed. Finally, the current challenges and opportunities for application of NCBMs in stable LMAs are also proposed to facilitate their further development.

关键词： Aolid-state electrolyte Li metal anodes Natural clay-based materials Rechargeable batteries Surface modification

Investigation of edge states variation in valley photonic crystals by modulating the refractive index of domain walls

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Optoelectronics Letters 2025年第3期21卷 160-166页

作者： ZHANG Run ZHONG Xingli LIN Zhongxi QIU Weibin SU Hui Key Laboratory of Optoelectronic Materials Chemistry and Physics Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices Fujian Institute of Research on the Structure of Matter Chinese Academy of Science University of Chinese Academy of Sciences Chinese Academy of Sciences College of Information Science and Engineering Huaqiao University Fujian Science & technology innovation Laboratory for Optoelectronic Information of China

Realizing the valley Hall effect by breaking the spatial inversion symmetry of photonic systems has become a cutting-edge field of micro-nano-optics, since the valley degree of freedom was introduced into photonic system. Various novel devices based on the domain walls of the valley photonic crystals have also been demonstrated. In this article,we investigate the variation of edge states by the modulation of refractive index within the domain walls, and the geometric difference between the dielectric columns of the sublattices. Straight photonic crystal waveguides with three types of domain walls (bearded, zigzag, armchair) are constructed. Simulation results show that the creation of a double-edge state in the band diagram results in two windows of stable transmission in tunable bands. Our findings might have significant implications in the field of novel optical devices.

关键词： A

Synthesis and characteristics of Na-A zeolite from coal fly ash and application for adsorption of cerium(Ⅲ)

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Journal of Rare Earths 2025年第1期43卷 171-179,I0007页

作者： Amru Daulay Widi Astuti Slamet Sumardi Fika Rofiek Mufakhir Yayat Iman Supriyatna Tri Haryono Lukmanul Hakim Samada Research center for Mining technology National Research and Innovation Agency(BRIN)J.Ir.SutamiKm.5Tanjung BintangSouth LampungLampung ProvinceIndonesia School of Chemistry University of BirminghamB152TTUK

Recycling rare earth elements(REEs)from waste is necessary for an environmentally sustainable reuse and wastewater management ***-A zeolite was synthesized from coal fly ash(CFA)and applied for Ce^(3+)*** transform infrared(FTIR)spectra show peaks at 790,500 and 467 cm^(-1),which are bond vibrations of Si-O-Si,Si with Al-O and Si-O-.The surface area is 15.88 m^(2)/g,with a pore size of 2.14 *** images show a cubic shape,which indicates the formation of *** emission and energy disperse spectroscopy(EDS)shows the formation of Si,Al,Na,and ***-A zeolite was applied for Ce^(3+)*** optimum conditions for Ce^(3+)adsorption are 50 ppm concentration,360 min,and pH *** maximum adsorption capacity is 176.49 mg/*** on the results,it is found that the adsorption of Ce^(3+)by Na-A zeolite is *** desorption test using HNO_(3) is more effective than using HCl and H_(2)SO_(4).A desorption efficiency of 97.22%is obtained at 4 *** test using real sample wastewater demonstrates an adsorption efficiency of 83.35%.

关键词： Coal fly ash Zeolite Na-A zeolite Adsorption Cerium(Ⅱ) Rare earths

Influence of Defect Structures on Intervalley Scattering in Two-dimensional WSe_(2) Revealed by Double-Resonance Raman Spectroscopy

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Chinese Journal of Chemical Physics 2025年第1期38卷 25-36,I0055页

作者： Yueqing Zhang Yao Zhang Zhen-Chao Dong Hefei National Research center for Physical Sciences at the Microscale and Synergetic innovation center of Quantum Information&Quantum Physics University of Science and Technology of ChinaHefei 230026China

Double-resonance Raman(DRR)scattering in two-di-mensional(2D)materials describes the intravalley or intervalley scattering of an electron or a hole excited by incident *** the presence of defects can provide additional momentum and influence the scat-tering process involving one or two phonons,only the idealized defects without any structural details are considered in tra-ditional DRR ***,the second-order DRR spectra of WSe_(2) monolayer with different types of defects are calculated involving the combinations of acoustic and optical phonons in the vicinity of K(K')and M points of the Brillouin *** electronic band structures are modified due to the presence of defects,and the band unfolding method is adopted to show the bending of valence and conduction bands for the defective WSe_(2) *** associ-ated phononic band structures also exhibit different changes in phonon dispersion curves,re-sulting in different DRR spectra corresponding to the different types of defects in the WSe_(2) *** example,the existence of W vacancy in the WSe_(2) monolayer would result in downshifts in vibrational frequencies and asymmetrical broadenings in linewidths for most combination modes due to the dramatic changes in contour shape of electronic valleys at K and K'.Moreover,the scattering from K to Q is found to be forbidden for the two Se vacan-cies because of the elevation of conduction band at the Q *** work highlights the role of defect structures in the intervalley scattering and may provide better understanding in the underlying physics of DRR process in 2D materials.

关键词： 2D materials Tungsten diselenide Intervalley scattering Double-resonance Ra-man Defect structure Band unfolding