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Achieving a large field-induced polarization and energy density in BaTiO_(3)films sputter-deposited on Si at 200℃ via a buffer-layer technique

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Journal of advanced Ceramics 2025年第3期14卷 69-78页

作者： Chao Liu Jun Ouyang Yuyao Zhao Hanfei Zhu Hongbu Cheng Zhenyan Liang Li Wang Institute of Advanced Energy Materials and Chemistry Jinan Engineering Laboratory for Multi-scale Functional MaterialsShandong Provincial Key Laboratory of Molecular EngineeringSchool of Chemistry and Chemical EngineeringQilu University of Technology(Shandong Academy of Sciences)Jinan 250353China Key Laboratory of Key Film Materials&Application for Equipments(Hunan Province) Hunan Provincial Key Laboratory of Thin Film Materials and DevicesSchool of Material Sciences and EngineeringXiangtan UniversityXiangtan 411105China Key Laboratory for Liquid–Solid Structure Evolution and Processing of Materials(Ministry of Education) School of Materials Science and EngineeringShandong UniversityJinan 250061China

Ferroelectric oxide films with a large field-induced polarization can be used in dielectric capacitors for charge or energy storage in microelectronic systems and hence have attracted intense research interest.A high processing temperature is usually required to produce a well-crystallized polar phase and hence a large polarization in the film,corresponding to a high charge or energy ***,high processing temperature not only reduces the charge‒discharge efficiency by producing a sizable remnant polarization but is also incompatible with the integration *** this study,we address this problem by creating a large field-induced polarization(~55.8μC/cm^(2))in BaTiO_(3)films sputter-deposited on Si at 200℃ via a buffer-layer *** large polarization led to a high energy density and efficiency(Wrec≈94.7 J/cm^(3),η≈78.2%@4 MV/cm).The thickness of LaNiO_(3)buffer layer was revealed to be the key factor determining the electric polarization(remnant and field-induced ones).A 50 nm LaNiO_(3)thickness,corresponding to the aforementioned polarization and energy storage performance,not only ensures proper crystallization in the BaTiO_(3)film,but also leads to an optimal combination of polycrystalline grains with a high dielectric *** latter accounts for the majority of the field-induced *** results revealed the key role of a buffer layer in tuning the microstructure of a low-temperature deposited ferroelectric oxide ***,the excellent charge/energy storage performance of these 200℃-deposited BaTiO_(3)films has provided many opportunities for this simple dielectric in microelectronics.

关键词： ferroelectric oxide films field-induced polarization BaTiO_(3) LaNiO3 energy density

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Electroless plating method prepared hierarchical structure of nickel black membrane for solar-driven interfacial evaporation

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Chemical Engineering Research and Design 2025年 218卷 587-596页

作者： He, Shuang Ma, Keyi Zhang, Hao Zhang, Guoliang Yang, Longchao Zhou, Jinhao Wu, Wenxuan Sun, De Li, Bingbing Yue, Dongmin School of Chemical Engineering Changchun University of Technology 2055 Yanan Street Changchun130012 China Key Laboratory of Advanced Functional Polymer Membrane Materials of Jilin Province 2055 Yanan Street Changchun130012 China State Grid Jilin Electric Power Research Institute 4433 Renmin Street Changchun130021 China Advanced Institute of Materials Science Changchun University of Technology 2055 Yanan Street Changchun130012 China

Solar-driven interfacial evaporation technology has attracted significant attention because of its ability to concentrate thermal energy on the evaporation surface to minimize the heat loss. As a key component in the process of interfacial evaporation, the structure of the photothermal conversion membrane is one of the important factors influencing interfacial evaporation performance. Herein, a hierarchical nickel black membrane (H-Ni) was prepared by electroless plating for solar-driven interfacial evaporation. A layer of triangular nickel black particles was grown on the surface of the Ni foam skeleton, which enhances the absorption (93.87 %) through the light-trapping effect. The evaporation rate of H-Ni membrane achieved to 1.27 kg m−2 h−1 with a solar-vapor conversion efficiency of 80.22 % under 1 kW m−2 solar irradiation. This work provides a novel design of a hierarchical structure via a convenient way, which is conductive to promoting the widespread application of solar water treatment technology. © 2025 Institution of Chemical Engineers

关键词： Thermal evaporation

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High spatial resolution infrared measurement method for transient temperature field based on 3D-SwinIR super-resolutions

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Review of Scientific Instruments 2025年第4期96卷 045107页

作者： Huang, Zihao Shen, Yirui Zhou, Mingxuan Chen, Manxi Yang, Heng Li, Shuang Chen, Hao-Sen Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures Institute of Advanced Structure Technology Beijing Institute of Technology Beijing100081 China School of Computer Science and Technology Beijing Institute of Technology Beijing China School of Artificial Intelligence Beihang University Beijing China

It is crucial to study the dynamic failure of materials because such failures occur widely in the fields of mechanics and earthquakes. However, capturing high-speed, high-resolution measurements of adiabatic shear bands temperature field during dynamic failure presents significant challenges. In this study, the spatial resolution of transient temperature field measurement was improved based on the self-developed high-speed infrared detector system combined with a novel multi-frame super-resolution method (3D-SwinIR). The super-resolution method employs 3D convolutional blocks and the Swin Transformer to effectively extract both shallow and deep features from multi-frame images, achieving high-quality super-resolution of high-speed infrared images. The effectiveness of the multi-frame super-resolution method was evaluated by a single structure measurement experiment, which indicated that spatial resolution has increased by 37%. An experiment was conducted on hat-shaped specimens using 3D-SwinIR for dynamic loading temperature measurement. The measurement errors for the peak and width of the temperature field were reduced by 51% and 33%, respectively. 3D-SwinIR provided a high spatial resolution measurement method for studying the dynamic thermal response of materials. © 2025 Author(s).

关键词： Image resolution

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Liquid metal assistant self-propagating high-temperature synthesis of S-containing high-entropy MAX-phase materials

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材料科学技术（英文版） 2025年第6期209卷 1-8页

作者： Donglong Bai Qiang Wang Bin Deng Yang Li Ao Huang Zitong Cheng Yun Zhao Jing Li Wei Yao Jianguang Xu School of Materials and Energy Shanghai Key Laboratory of Engineering Materials Application and EvaluationShanghai Polytechnic UniversityShanghai 201209China Shanghai Thermophysical Properties Big Data Professional Technical Service Platform Shanghai Engineering Research Center of Advanced Thermal Functional MaterialsShanghai 201209China School of Materials Science and Engineering Yancheng Institute of TechnologyYancheng 224000China School of Materials and Energy Shanghai Key Laboratory of Engineering Materials Application and EvaluationShanghai Polytechnic UniversityShanghai 201209China

Due to their high-entropy effects,the high-entropy(HE)MAX-phase materials improve the comprehen-sive performance of MAX phases,opening up more possibilities for practical engineering ***,it is still challenging to obtain S-containing high-entropy MAX phases because of the high volatilization behavior of sulfur,suffering from issues such as high reaction temperature and long re-action time of traditional synthesis *** paper proposes a novel process named as liquid metal assistant self-propagating high-temperature synthesis(LMA-SHS)for efficient synthesis of high-purity S-containing high-entropy MAX-phase ***-melting-point metal(Sn or In)has been introduced into the raw mixture and melted into a liquid phase during the early stage of the SHS *** serv-ing as a"binder"between transition metal atoms of the M-site due to the negative mixing enthalpy,this liquid phase can accelerate mass and heat transfer during the SHS process,ensuring a uniform solid solution of each element and realizing the synthesis of high-purity(TiNbVZr)2SC in an extremely short *** synthesis method for high-entropy MAX-phase materials developed in this study,i.e.,LMA-SHS,showing very short reaction time,low energy consumption,high yield,and low cost,has the promise to be a general energy-and resource-efficient route towards high-purity HE materials.

关键词： High-entropy S-containing MAX phases Liquid metal LMA-SHS

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In-phase collective unconventional photon blockade and its stability in an asymmetrical cavity containing N bosonic atoms

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Chinese Physics B 2025年第1期34卷 331-336页

作者： Ying Luo Xinqin Zhang Yi Xiao Jingping Xu Haozhen Li Yaping Yang Xiuwen Xia School of Physics and Electronic Information Gannan Normal UniversityGanzhou 341000China Institute of Atomic and Molecular Physics and Functional Materials School of Mathematics and PhysicsJinggangshan UniversityJi’an 343009China MOE Key Laboratory of Advanced Micro-Structure Materials School of Physics Science and EngineeringTongji UniversityShanghai 200092China College of Communication Engineering Hangzhou Dianzi UniversityHangzhou 310018China Zhejiang Province Key Laboratory of Quantum Technology and Device Zhejiang UniversityHangzhou 310027China

We present work on a cavity-driven QED system combining an asymmetrical Fabry–Perot cavity and N two-level atoms(TLAs)and show the convenience of simplifying from distinguishable atoms to undistinguishable bosons when the atoms are prepared in the same initial *** simplification is valid even when the atoms are not prepared in the inphase condition,since any partial in-phase initial state will evolve into the ground state through a relaxation ***,we get a reduced group of differential equations by introducing the Dicke states,and the under-zero Lyapunov exponents verify its *** also work out the collective unconventional photon blockade(UCPB)and get two kinds of giant nonreciprocal UCPBs(NUCPBs)in the weak-driving *** show that we can employ N noninteracting bosonic atoms to generate a collective UCPB instead of a monoatomic UCPB as the UCPB conditions do not vary with the number of ***,the forward giant NUCPB only occurring for N larger than a certain number as well as the backward giant NUCPB are controllable by the cavity asymmetry and by the number of *** findings suggest a prospective approach to the generation of quantum nonreciprocity by N identical atoms.

关键词： unconventional photon blockade quantum nonreciprocity asymmetrical cavity

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Dynamic Regulation of Hydrogen Bonding Networks and Solvation Structures for Synergistic Solar‑Thermal Desalination of Seawater and Catalytic Degradation of Organic Pollutants

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Nano-Micro Letters 2025年第2期17卷 548-565页

作者： Ming‑Yuan Yu Jing Wu Guang Yin Fan‑Zhen Jiao Zhong‑Zhen Yu Jin Qu Beijing Key Laboratory of Advanced Functional Polymer Composites Beijing University of Chemical TechnologyBeijing 100029People’s Republic of China State Key Laboratory of Organic‑Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029People’s Republic of China

Although solar steam generation strategy is efficient in desalinating seawater,it is still challenging to achieve continuous solar-thermal desalination of seawater and catalytic degradation of organic ***,dynamic regulations of hydrogen bonding networks and solvation structures are realized by designing an asymmetric bilayer membrane consisting of a bacterial cellulose/carbon nanotube/Co_(2)(OH)_(2)CO_(3)nanorod top layer and a bacterial cellulose/Co_(2)(OH)_(2)CO_(3)nanorod(BCH)bottom ***,the hydrogen bonding networks inside the membrane can be tuned by the rich surface–OH groups of the bacterial cellulose and Co_(2)(OH)_(2)CO_(3)as well as the ions and radicals in situ generated during the catalysis ***,both SO_(4)^(2−)and HSO_(5)−can regulate the solvation structure of Na^(+)and be adsorbed more preferentially on the evaporation surface than Cl^(−),thus hindering the de-solvation of the solvated Na^(+)and subsequent nucleation/growth of ***,the heat generated by the solar-thermal energy conversion can accelerate the reaction kinetics and enhance the catalytic degradation *** work provides a flow-bed water purification system with an asymmetric solar-thermal and catalytic membrane for synergistic solar thermal desalination of seawater/brine and catalytic degradation of organic pollutants.

关键词： Solar steam generation Seawater desalination Catalytic degradation Bacterial cellulose Cobalt hydroxycarbonate nanorods

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A general deep neural network potential model for transition metal carbides

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Journal of the American Ceramic Society 2025年

作者： Dai, Fu-Zhi Xu, Yifen Wang, Yinan Hu, Jidong Gu, Xin-Fu Zhu, Shipeng School of Materials Science and Engineering University of Science and Technology Beijing Beijing China AI for Science Institute Beijing China Science and Technology on Advanced Functional Composite Laboratory Aerospace Research Institute of Materials & Processing Technology Beijing China

Transition metal carbides (TMCs) are well-known for their remarkable properties, such as high melting points, excellent oxidation and corrosion resistance, and outstanding mechanical properties. These properties make them ideal candidates for applications in extreme environments. Consequently, there is a pressing need for reliable and efficient material design tools to expedite the development of new TMCs. To address this demand, we have developed a domain-specific, medium-scale interatomic potential model for TMCs that encompasses a wide range of elements, including Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, C, and N, and covers three typical crystal structures as well as melting structures and surface structures. Our model demonstrates predictive accuracy on par with density functional theory-based methods, with errors in energy and force being 9.2 meV/atom and 363 meV/Å, respectively. Moreover, the model demonstrates high accuracy in predicting various material properties, such as lattice parameters, elastic constants, equations of state, and melting points. It also accurately predicts grain boundary segregations and stacking fault structures near the hetero-phase interface. By offering a reliable and efficient tool for material design, our model will play an instrumental role in the development of TMCs, ultimately benefiting various industries that rely on TMCs. © 2025 The American Ceramic Society.

关键词： atomic-scale simulation grain boundary segregation machine learning potential melting point stacking faults transition metal carbides

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双膦酸型自组装单分子层的中心氟化策略实现高效有机太阳能电池（英文）

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science China Materials 2025年第5期68卷 1408-1414页

作者：刘航高兴邦辛雨菲王若晗钟浩林阚斌万相见陈永胜刘永胜 The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials Institute of Polymer ChemistryCollege of ChemistryNankai University School of Materials Science and Engineering National Institute for Advanced MaterialsNankai University Renewable Energy Conversion and Storage Center Nankai University

目前,广泛用于正型有机太阳能电池的空穴提取层(HEL)材料是PEDOT:PSS.然而, PEDOT:PSS的酸性会腐蚀氧化铟锡(ITO)电极,降低器件的稳定性.本文采用中心氟化策略,设计合成了一种双膦酸型自组装单分子层(SAM)材料3BPIC-cF.与PEDOT:PSS相比,... 详细信息

目前,广泛用于正型有机太阳能电池的空穴提取层(HEL)材料是PEDOT:PSS.然而, PEDOT:PSS的酸性会腐蚀氧化铟锡(ITO)电极,降低器件的稳定性.本文采用中心氟化策略,设计合成了一种双膦酸型自组装单分子层(SAM)材料3BPIC-cF.与PEDOT:PSS相比, 3BPIC-cF修饰的ITO基底具有更高的光透过率和更好的界面相容性.氟原子的引入使得3BPIC-cF具有更大的偶极矩和更深的最高占据轨道能级,导致ITO/3BPIC-cF基底具有比ITO/PEDOT:PSS基底更大的功函数.这些优势有利于空穴的提取,降低界面阻抗并抑制界面处的非辐射复合.使用3BPIC-cF作为HEL的有机太阳能电池实现了19.34%的光伏效率,优于PEDOT:PSS器件(PCE=18.64%).此外,基于3BPIC-cF的光伏器件具有比基于PEDOT:PSS的器件更高的稳定性.本研究为面向高效有机太阳能电池中SAM分子的设计与合成提供了有价值的指导.

关键词： organic solar cells self-assembled monolayer fluorination strategy hole extraction layer

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Constructing a 1D/2D piezoelectric Bi2O2CO3/PbTiO3 heterostructure for improving carrier separation and photocatalytic activity

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Chemical Communications 2025年第42期61卷 7656-7659页

作者： Chen, Yukai Ji, Yiyi Wang, Ruizhe Wang, Dan Fang, Jiaojiao Dong, Rulin Dai, Baoying Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology Advanced Catalysis and Green Manufacturing Collaborative Innovation Center School of Petrochemical Engineering Changzhou University Changzhou213164 China Key Laboratory of Functional Molecular Solids Ministry of Education College of Chemistry and Materials Science Anhui Normal University Wuhu241002 China Nanjing University of Posts and Telecommunications Nanjing210023 China

Photocatalytic efficiency is limited by the recombination of photoinduced electrons and holes. To improve carrier separation, it is essential to develop heterojunctions and internal piezoelectric fields. In this work, a novel Bi2O2CO3/PbTiO3 (BOC/PTO) heterojunction exhibiting a dual piezoelectric effect is introduced for the first time. The integration of PTO nanofibers with BOC nanosheets increases the contact areas, amplifying deformation and enhancing the piezoelectric effect. The interplay between the heterojunction and piezoelectric field significantly promotes the separation of photoinduced carriers, thereby improving catalytic performance. Profiting from this carrier separation, the 20% BOC/PTO composite shows 2.7 times the efficiency of PTO. Moreover, its photo-piezoelectric catalytic efficiency is two times that of pure photocatalysis and three times that of piezoelectric catalysis, demonstrating the effectiveness of the collaboration of the piezoelectric effect and photocatalysis. This strategy offers a promising approach for controlling carrier dynamics to achieve more efficient photocatalytic reaction. © 2025 The Royal Society of Chemistry.

关键词： Borate minerals

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Short-Time Annealing Enhancing the Magnetic Properties and Microstructure Uniformity of Melt-Spun (Nd, Pr)–Fe-B Ribbons

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IEEE Transactions on Magnetics 2025年第5期61卷 1-1页

作者： Liu, Lin Li, Yuqing Wang, Jinjin Liu, Lingqi Bian, Mengying Zhang, Hongguo Yue, Ming Beijing University of Technology College of Materials Science and Engineering Key Laboratory of Advanced Functional Materials Ministry of Education of China Beijing100124 China

Melt spinning is an effective method for preparing nanocrystalline permanent magnet materials. During the rapid-quenching process, uneven undercooling can easily lead to uneven distribution between the ribbons. Due to the difference in cooling speed between the roller surface and the free surface, the microstructure in one ribbon is also uneven. In this work, to solve the problem of poor uniformity of the melt-spun (Nd, Pr)–Fe-B ribbons obtained by direct rapid quenching, appropriate short-time annealing had been implemented. The microstructure and magnetic properties of the melt-spun (Nd, Pr)–Fe-B ribbons before and after annealing showed a significant improvement in the uniformity. The improvement of uniformity could be beneficial for the application of melt-spun powders in bonded magnets and hot-deformed magnets, enhancing the magnetic properties of the related products. © 1965-2012 IEEE.

关键词： Microstructure

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