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DNA-based recyclable moist-electric generator

Friction 2025年第2期13卷 57-62页

作者： Tianlei Guang Yaxing Huang Haiyan Wang Tiancheng He Kaixuan Zhu Yujuan Zhang Hongfei Shang Jian Li Huhu Cheng Liangti Qu Laboratory of Flexible Electronics Technology Key Laboratory of Organic Optoelectronics&Molecular EngineeringMinistry of EducationDepartment of ChemistryTsinghua UniversityBeijing 100084China State Key Laboratory of Tribology in Advanced Equipment Tsinghua UniversityBeijing 100084China School of Chemical Engineering and Technology North University of ChinaTaiyuan 030051China State Key Laboratory of Special Surface Protection Materials and Application Technology Wuhan Research Institute of Materials ProtectionWuhan 430000China

Recently developed moist-electric generator(MEG)can spontaneously produce electricity after absorbing water from the air,delivering an interesting and novel power harvesting *** employment of environment-friendly biological substrates in MEGs has demonstrated the favorable electricity generation capacity,however,which always requires a careful cultivation process or gentle storage *** this regard,the extremely abundant DNA formed porous membrance is fabricated to construct a novel recyclable DNA based MEG(DNA-MEG)which produces a stable voltage of ca.0.3 V with a current density of ca.1.2μA·cm−2,as well as a maximum power density of 0.36μW·cm−2 at~90%relative humidity ***,benefited from excellent water-solubility,this freeze-drying DNA membrance can be easily recycled after DNA-MEG damaged and the reborned device still shows favorable electricity generation *** addition,several DNA-MEGs in parallel or series can power up light-emitting diodes and so on for *** stable and recyclable DNA-MEG will provide new insights for moisture power generation device design and enlarge the practical regions greatly.

关键词： moist-electric generator(MEG) DNA biological substrates electricity generation

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advanced research on the preparation and application of carbide ceramic fibers

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Journal of advanced Ceramics 2024年第9期13卷 1291-1336页

作者： Zhongqian Zhao Wei Liao Jing Chen Jian Jiao Cuilan Wu Yanzi Gou Science and Technology on Advanced Ceramic Fibers and Composites Laboratory College of Aerospace Science and EngineeringNational University of Defense TechnologyChangsha 410073China Centre for High-Resolution Electron Microscopy College of Materials Science and EngineeringHunan UniversityChangsha 410082China National Key Laboratory of Advanced Composites AECC Beijing Institute of Aeronautical MaterialsBeijing 100095China

Carbide ceramic fibers are of significant importance for application in the high-tech areas of advanced aircraft engines,aerospace vehicles,and the nuclear industry due to their excellent properties,such as high tensile strength and elastic modulus,excellent high-temperature resistance,and oxidation *** paper reviews the preparation and application of different carbide ceramic fibers,including SiC fibers and transition metal carbide(e.g.,ZrC,HfC,and TaC)ceramic *** preparation methods of carbide ceramic fibers are discussed in terms of different fiber diameters,represented by SiC fibers with variable weaving properties and functions due to their differences in ***,the application of carbide ceramic fibers as high-temperature-resistant structural materials,catalyst carriers,sensors,and supercapacitors are summarized,and strategies for the future development of carbide ceramic fibers are *** review aims to help researchers enhance their understanding of the preparation and utilization of carbide ceramic micro/nanofibers,advancing the development of high-performance carbide ceramic fibers.

关键词： carbide ceramic fibers SiC fibers boron carbide(B_(4)C)fibers ultra-high temperature ceramics SiC ceramic fiber-reinforced SiC(SiCf/SiC)composites

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Optical and electrical anisotropy regulation engineering of low-dimensional materials toward polarized detection and imaging applications

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Rare Metals 2024年第7期43卷 2968-2993页

作者： Jian-Bin Zhang Nan Zhou Li-Hui Zhang Cong-Hui Shang Jia-Xuan Li Yi Zhao Guo-Hui Jia Ru-Sen Yang Hua Xu Xiao-Bo Li Shaanxi Joint Key Laboratory of Graphene Shaanxi Key Laboratory of High-Orbits-Electron Materials and Protection Technology for AerospaceShaanxi Joint Key Laboratory of GrapheneSchool of Advanced Materials and NanotechnologyXidian UniversityXi'an710126China Guangzhou Institute of Technology Xidian UniversityGuangzhou 710068China Xi'an Thermal Power Research Institute Co. LtdXi'an 710054China Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi'an Xi'an 710119China

Polarized-sensitive image sensors are a kind of photodetector with great development potential due to their enhanced ability to detect and identify the target objects from the aspect of spatial,spectral and polarized ***,low-dimensional anisotropic materials with inherent anisotropic properties,ultrathin thickness,tunable bandgap and feasible integration with complementary metal oxide semiconductor(CMOS)fabrication processes have attracted great interest for their facilitation of polarized photodetector devices *** the polarized detection performance of low-dimensional materials to satisfy realistic needs stimulates the exploration of modulation of anisotropic *** this review,we comprehensively introduce the latest research progress in modulating the optical and optoelectronic anisotropy characteristics of low-dimensional *** strategy of anisotropy regulation through crystal structure engineering and coupling system is discussed ***,the latest progress in image recognition applications using anisotropic low-dimensional materials is reviewed in ***,we summarize the challenge and propose future opportunities in the practical application of polarized-sensitive imaging photodetectors based on low-dimensional anisotropic materials.

关键词： Anisotropy Polarized detection Image recognition Low-dimensional materials

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Bifunctional PdPt bimetallenes for formate oxidation-boosted water electrolysis

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Carbon Energy 2023年第12期5卷 175-186页

作者： Xi-Lai Liu Yu-Chuan Jiang Jiang-Tao Huang Wei Zhong Bin He Pu-Jun Jin Yu Chen Key Laboratory of Macromolecular Science of Shaanxi Province Key Laboratory of Applied Surface and Colloid Chemistry(Ministry of Education)Shaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi'anShaanxiPR China College of New Materials and New Energies Shenzhen Technology UniversityShenzhenGuangdongPR China

Small-molecule electrooxidation-boosted water electrolysis(WE)is an energy-saving method for hydrogen(H2)***,PdPt bimetallenes(PdPt BMLs)are obtained through the simple galvanic replacement *** BMLs reveal 2.93-fold enhancement in intrinsic electroactivity and 4.53-fold enhancement in mass electroactivity for the formate oxidation reaction(FOR)with respect to Pd metallenes(Pd MLs)at 0.50 V potential due to the synergistic ***,the introduction of Pt atoms also considerably increases the electroactivity of PdPt BMLs for hydrogen evolution reaction(HER)with respect to Pd MLs in an alkaline medium,which even exceeds that with the use of commercial Pt *** by the outstanding FOR and HER electroactivity of bifunctional PdPt BMLs,a two-electrode FOR-boosted WE system(FOR-WE)is constructed by using PdPt BMLs as the cathode and the *** FOR-WE system only requires an operational voltage of 0.31 V to achieve H2 production,which is 1.48 V lower than that(ca.1.79 V)with the use of the traditional WE system.

关键词： electrocatalyst formate oxidation reaction hydrogen evolution reaction metallene water electrolysis

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Influences of substituting of(Ni_(1/3)Nb(2/3))for Ti^(4+)on the phase compositions,microstructures,and dielectric properties of Li_(2)Zn[Ti_(1-x)(Ni_(1/3)Nb_(2/3))_(x)]_(3)O_(8)(0<≤x≤0.3)microwave ceramics

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Journal of advanced Ceramics 2023年第4期12卷 760-777页

作者： Jiamao Li Zexing Wang Yunfeng Guo Songlin Rana School of Materials Science and Engineering Anhui University of TechnologyMaanshan 243032China Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials Ministry of EducationAnhui University of TechnologyMaanshan 243002China

Complex ion substitution is gaining more attention as an appealing method of modifying the structure and performance of microwave *** this work,Li_(2)Zn[Ti_(1-x)(Ni_(1/3)Nb_(2/3))_(x)]_(3)O_(8),0≤x≤0.3ceramics were designed based on the complex ion substitution strategy,following the substitution rule of radius and valence to investigate the relationship among phase compositions(containing oxygen vacancies and Ti^(3+)ions),microstructures,and microwave dielectric characteristics of the LZTNNx *** samples maintained a single Li_(2)ZnTi_(3)O_(8)solid solution phase as x≤0.2,whereas the sample of x=0.3 produced a second phase with the LiNbO_(3)*** appropriate amount of(Ni_(1/3)Nb_(2/3))^(4+)substitution could slightly improve the densification of the LZTNNx ceramics due to the formation of the LiZnTi_(3)O_(8)solid solution accompanied by a decrease in the average grain *** presence of a new Aig Raman active band at about 848 cm^(-1)indicated that local symmetry changed,affecting atomic interactions of the LZTNNx *** variation of the relative dielectric constant(εr)was closely related to the molar volume ionic polarizability(α_(D)^(T)),and the temperature coefficient of the resonant frequency(τ_(f))was related to the bond valence(V_(1))of *** increase in density,the absence of the Ti3+ions and oxygen vacancies,and the reduction in damping behavior were responsible for the decreased dielectric *** LZTNNO.2 ceramics sintered at 1120℃exhibited favorable microwave dielectric properties:εr=22.13,quality factor(Q×f)=97,350 GHz,andτ_(f)=-18.60 ppm/C,which might be a promising candidate for wireless communication applications in highly selective electronics.

关键词： Li_(2)ZnTi_(3)O_(8)ceramics microwave dielectric properties microstructure Raman spectroscopy X-ray photoclcctron spectroscopy(XPS)

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Anisotropic growth of nano-precipitates governed by preferred orientation and residual stress in an Al-Zn-Mg-Cu alloy

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Journal of Materials Science & technology 2024年第21期188卷 234-251页

作者： Runze Wang Hongyun Luo Sujun Wu Tianshu Zhao Xin Wang Robert O.Ritchie School of Materials Science and Engineering Beihang UniversityBeijing 100191China Key Laboratory of Aerospace Materials and Performance Beihang UniversityBeijing 100191China Beijing Key Laboratory of Advanced Nuclear Materials and Physics Beihang UniversityBeijing 100191China Beijing Advanced Innovation Centre for Biomedical Engineering Beihang UniversityBeijing 100191China Surface Engineering Institution AECC Beijing Institute of Aeronautical MaterialsBeijing 100095China Department of Materials Science and Engineering University of CaliforniaBerkeleyCA 94720USA

Through an understanding of diffusion,precise control of the size distribution of nano-precipitates can be essential to developing superior properties in precipitation-strengthened *** a significant influence of crystallographic orientation on the diffusion process is known to exist in low-symmetry hexagonal close-packed alloys,such anisotropic diffusion is still unidentified in high-symmetry cubic *** this work,we reveal the diffusion-controlled coarsening induced anisotropic growth process of nano-precipitates in an Al-Zn-Mg-Cu *** experimental and theoretical studies demonstrate that with an increase in the residual stress,the diffusion-controlled coarsening rate is slow along the<112>fiber texture in the alloy matrix with smaller grain *** such,we find that the diffusion activation energy will be increased along the preferred orientation with largest residual stress,which leads to a reduced diffusion-controlled coarsening ***,we demonstrate that the increase in the volume fraction of nano-precipitates originates from the rapid grain-boundary controlled coarsening of the grainboundary *** on these results,an underlying microstructural design strategy is proposed,involving the crystallographic orientation,the residual stress and the grain boundaries to manipulate the precipitate size distribution in this class of alloys.

关键词： Aluminum alloy Precipitate coarsening behavior Preferred orientation Diffusion coefficient Residual stress

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Evidence of microstructural evolution linked to non-monotonic distribution of micromechanical properties induced by shot peening

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材料科学技术（英文版） 2025年第4期207卷 238-245页

作者： Guoxin Lu Qiang Wang Bonnie Attard Huhu Su Shijian Zheng Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of EducationSchool of Materials Science and EngineeringShandong UniversityJinan250061China Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material AECC Beijing Institute of Aeronautical MaterialsBeijing100095China Department of Metallurgy and Materials Engineering University of MaltaMSD2080Malta Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology School of Materials Science and EngineeringHebei University of TechnologyTianjin300130China

The residual stress field induced by surface strengthening processes such as mechanical shot peening and other forms of plastic deformation does not generally exhibit a simple"monotonic"distribution *** researchers have analyzed this fact from a mechanical perspective based on Hertz ***,the micro/nano-scale microstructural changes corresponding to the distribution of residual stress fields still appear to be *** this study,we focused on a widely used material in aviation manufacturing,namely nickel-based superalloy GH4169,as our experimental *** subjected GH4169 alloy to me-chanical strengthening treatment using a shot peening intensity of 0.25 mmA,followed by quantitative testing of micromechanical performance indicators such as microhardness and residual *** thor-oughly investigate the relationship between micromechanical properties and microstructure changes,we utilized transmission electron microscopy(TEM)to observe and analyze shot-peened materials at differ-ent *** findings revealed that the most severe microstructural distortion induced by mechanical shot peening in GH4169 alloy was likely to occur within a depth range of 25 to 75 *** observation aligns with the actual phenomenon that the maximum microhardness and maximum residual compres-sive stress did not manifest on the outermost surface of the *** presenting a detailed analysis of deformation defects such as dislocations,stacking faults,and twinning in different depths of mechan-ically strengthened layers,our study contributes to a deeper understanding and practical application of post-processing technologies based on plastic deformation.

关键词： Mechanical shot peening surface strengthening Residual stress Microstructure

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In vitro evaluation of Zn-10Mg-xHA composites with the core-shell structure

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Frontiers of Materials Science 2024年第3期18卷 19-33页

作者： Zeqin Cui Qifeng Hu Jianzhong Wang Lei Zhou Xiaohu Hao Wenxian Wang Weiguo Li Weili Cheng Cheng Chang College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030000China State Key Laboratory of Porous Metal Materials Northwest Institute for Non-ferrous Metal ResearchXi'an 710016China Engineering Training Center Taiyuan University of TechnologyTaiyuan 030024China Guangdong Provincial Key Laboratory of Modern Surface Engineering Technology National Engineering Laboratory of Modern Materials Surface Engineering TechnologyInstitute of New MaterialsGuangdong Academy of SciencesGuangzhou 510651China

Zinc-based composites represent promising materials for orthopedic implants owing to their adjustable degradation rates and excellent *** this study,a series of Zn-10Mg-xHA(x=0-5 wt.%)composites with the core-shell structure were prepared through spark plasma sintering,and their microstructural,mechanical,and in vitro properties were systematically *** showed that the doped hydroxyapatite(HA)is concentrated at the outer edge of the MgZn2 shell *** compression strength of the Zn-1oMg HA composite gradually decreased with the increase of the HA content,while its corrosion rate decreased initially and then *** corrosion resistance of the composite with the addition of 1 wt.%HA was improved compared to that of ***,the further increase of the HA content beyond 1 wt.%resulted in a faster degradation of the ***,the Zn-10Mg-1HA composite significantly enhanced the activity of Mc3T3-E1 *** on such findings,it is revealed that the composite containing 1 wt.%HA exhibits superior overall properties and is anticipated to serve as a promising candidate for bone implantmaterials.

关键词： zinc-based composite hydroxyapatite mechanical property in vitro degradationbehavior biocompatibility

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Seed-assisted growth for high-performance perovskite solar cells:A review

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Journal of Energy Chemistry 2024年第9期96卷 588-610页

作者： Zhimin Fang Ting Nie Jianning Ding Shengzhong(Frank)Liu Institute of Technology for Carbon Neutralization Yangzhou UniversityYangzhou 225127JiangsuChina Dalian National Laboratory for Clean Energy iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119ShaanxiChina

The rapid increase in the power conversion efficiency(PCE)of perovskite solar cells(PSCs)is closely related to the development of deposition techinique for perovskite *** high-quality perovskite film enables efficient charge transportation and less trap states,which are eventually translated into enhanced device ***-assisted growth(SAG)is a potential technique for depositing highly-crystallized perovskite films with preferential crystal orientation among the numerous approaches related to crystallization *** this review,we summarize the recent advances in the SAG technique for both one-step and two-step processed perovskite ***,seeding at the buried interface and on the top surface are also *** present different seeds and their corresponding seeding mechanism in detail,such as inorganic nanomaterials,organic ammoniums,alkali metal halides,and perovskite ***,challenges and perspectives are proposed to investigate the potential expansion of seeding engineering in high-performance PSCs,particularly large-area devices.

关键词： Perovskite solar cell Seed Crystallization Efficiency

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Enhanced room temperature CO2 photoreduction on gas-solid interfaces using nanocrystals integrated with ZIF-8 wrapping design

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材料科学技术（英文版） 2025年第6期209卷 55-63页

作者： Xiaoxiong Hou Zhuangzhuang Ma Zhilei Zhang Xiaotong Gao Hongqiang Wang Lichao Jia Key Laboratory of Applied Surface and Colloid Chemistry Shaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringNational Ministry of EducationShaanxi Normal UniversityXi'an 710119China Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China University of the Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical University and Shaanxi Joint Laboratory of GrapheneXi'an 710072China

Composites derived from metal-organic frameworks(MOFs)show promise as catalysts for the photocat-alytic reduction of ***,their potential is hindered by constraints such as limited light absorp-tion and sluggish electron transfer and separation,impacting the overall efficiency of the photocatalytic *** this study,TiO2 nanocrystals,modified with Ptx+,underwent laser etching were encapsulated within the traditional MOF-ZIF-8 *** enhanced the adsorption capabilities for CO2 reactants and solar light,while also facilitating directed electron transfer and the separation of photogenerated *** finely-tuned catalyst demonstrates impressive CH4 selectivity at 9.5％,with yields of 250.24 μmol g-1 h-1 for CO and 25.43 μmol g-1 h-1 for CH4,utilizing water as a hole trap and H+*** study demonstrates the viability of achieving characteristics related to the separation of photogen-erated charges in TiO2 nanocrystals through laser etching and MOF composite *** offers novel perspectives for designing MOF-based catalysts with enhanced performance in artificial photosynthesis.

关键词： CO2 photoreduction Nanocrystals TiO2 ZIF-8 Wrapping structure

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