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Predicting superconducting temperatures with new hierarchical neural network AI model

Frontiers of physics 2025年第1期20卷 165-172页

作者： Shaomeng Xu Pu Chen Mingyang Qin Kui Jin X.-D.Xiang School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China

Superconducting critical temperature is the most attractive material property due to its impact on the applications of electricity transmission,railway transportation,strong magnetic fields for nuclear fusion and medical imaging,quantum computing,*** ability to predict its value is a constant pursuit for condensed matter *** developed a new hierarchical neural network(HNN)AI algorithm to resolve the contradiction between the large number of descriptors and the small number of datasets always faced by neural network AI approaches to materials *** this new HNN-based AI model,a much-increased number of 909 universal descriptors for inorganic compounds,and a dramatically cleaned database for conventional superconductors,we achieved high prediction accuracy with a test R^(2)score of 95.6%.The newly developed HNN model accurately predicted T_(c)of 45 new high-entropy alloy superconductors with a mean absolute percent error below 6%compared to the experimental *** demonstrated a significant potential for predicting other properties of inorganic materials.

关键词： conventional superconducting critical temperature hierarchical neural network universal descriptors artificial intelligence

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Combining machine learning algorithms with traditional methods for resolving the atomic-scale dynamic structure of monolayer MoS_(2) in high-resolution transmission electron microscopy

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Chinese physics B 2025年第1期34卷 162-170页

作者： Yu Meng Shuya Wang Xibiao Ren Han Xue Xuejun Yue Chuanhong Jin Shanggang Lin Fang Lin Department of Applied Physics College of Electronic EngineeringSouth China Agricultural UniversityGuangzhou 510642China State Key Laboratory of Silicon and Advanced Semiconductor Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China Materials Sciences Division Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA

High-resolution transmission electron microscopy(HRTEM)promises rapid atomic-scale dynamic structure ***,the precision limitations of aberration parameters and the challenge of eliminating aberrations in Cs-corrected transmission electron microscopy constrain resolution.A machine learning algorithm is developed to determine the aberration parameters with higher precision from small,lattice-periodic crystal *** proposed algorithm is then validated with simulated HRTEM images of graphene and applied to the experimental images of a molybdenum disulfide(MoS_(2))monolayer with 25 variables(14 aberrations)resolved in wide *** these measured parameters,the phases of the exit-wave functions are reconstructed for each image in a focal series of MoS_(2)*** images were acquired due to the unexpected movement of the specimen ***-dimensional data extraction reveals time-varying atomic structures and *** particular,the atomic evolution of the sulfur-vacancy point and line defects,as well as the edge structure near the amorphous,is visualized as the resolution has been improved from about 1.75?to 0.9 *** method can help salvage important transmission electron microscope images and is beneficial for the images obtained from electron microscopes with average stability.

关键词： aberration measurement high-resolution transmission electron microscopy feature-extraction networks exit-wave reconstruction monolayer MoS_(2)

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Wide field of view large aperture meta-doublet eyepiece

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Light(science & Applications) 2025年第1期14卷 167-176页

作者： Anna Wirth-Singh Johannes E.Fröch Fan Yang Louis Martin Hanyu Zheng Hualiang Zhang Quentin T.Tanguy Zhihao Zhou Luocheng Huang Demis DJohn Biljana Stamenic Juejun Hu Tian Gu Arka Majumdar Department of Physics University of WashingtonSeattleWAUSA Department of Electrical and Computer Engineering University of WashingtonSeattleWAUSA Department of Materials Science and Engineering Massachusetts Institute of TechnologyCambridgeMAUSA Department of Electrical and Computer Engineering University of MassachusettsLowellMAUSA Department of Electrical and Computer Engineering University of CaliforniaSanta BarbaraCAUSA

Wide field of view and light weight optics are critical for advanced eyewear,with applications in augmented/virtual reality and night *** refractive lenses are often stacked to correct aberrations at a wide field of view,leading to limited performance and increased size and *** particular,simultaneously achieving a wide field of view and large aperture for light collection is desirable but challenging to realize in a compact ***,we demonstrate a wide field of view(greater than 60°)meta-optic doublet eyepiece with an entrance aperture of 2.1 *** the design wavelength of 633 nm,the meta-optic doublet achieves comparable performance to a refractive lens-based eyepiece *** meta-doublet eyepiece illustrates the potential for meta-optics to play an important role in the development of high-quality monochrome near-eye displays and night vision systems.

关键词： optics refractive illustrate

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Freestanding single-crystal superconducting electron-doped cuprate membrane

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Physical Review materials 2025年第2期9卷 L021802-L021802页

作者： S. Sandik Bat-Chen Elshalem A. Azulay M. Waisbort A. Kohn B. Kalisky Y. Dagan School of Physics and Astronomy Tel Aviv University Tel Aviv 6997801 Israel Department of Physics and Institute of Nanotechnology and Advanced Materials Bar-Ilan University Ramat-Gan 5290002 Israel Department of Materials Science and Engineering The Iby and Aladar Fleischman Faculty of Engineering Tel Aviv University Tel Aviv 6997801 Israel

Thin films of cuprate superconductors are easier to control in terms of doping as compared to bulk samples. However, they require specific substrates to facilitate epitaxial growth. These substrates are often incompatible with materials used in electronic applications. Furthermore, it is challenging to separate the substrate's properties from the material of interest. Here, we demonstrate the fabrication of an electron-doped cuprate membrane. We show that the membrane has a coherent crystal structure. Furthermore, the superconducting properties of the membrane postliftoff closely resemble those of the thin films preliftoff, as revealed by a scanning superconducting quantum interference device (SQUID) microscope. Such membranes pave the way for designing new material properties and incorporating complex superconducting materials into typically incompatible electronic devices.

关键词： Single crystals

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Enhancing corrosion resistance of MAO coatings on Al alloy LY12 through in situ co-doping with zinc phosphate and cerium phosphate

Corrosion Communications

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Corrosion Communications 2025年第1期17卷 35-43页

作者： Chao Yang Tao Ying Aihui Huang Jian Huang Pinghu Chen Paul K.Chu Xiaoqin Zeng National Engineering Research Center of Light Alloy Net Forming School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai Key Laboratory of Advanced High-Temperature Materials and Precision Forming School of Materials Science and Engineering Shanghai Jiao Tong University Department of Chemistry University of Munich(LMU) College of Mechanical Engineering Key Laboratory of Hunan Province of Equipment Safety Service Technology under Extreme Environment University of South China Department of Physics Department of Materials Science&Engineering and Department of Biomedical Engineering City University of Hong Kong

Corrosion of aluminum（Al） alloys during service limits many applications. Micro-arc oxidation（MAO） coatings can enhance corrosion resistance, but porous defects in the films undermine their effectiveness. Here, by mixing a phosphate electrolyte with soluble Zn and Ce salts, zinc phosphate and cerium phosphate co-doped MAO corrosion-resistant coating is prepared on Al alloy LY12. Zinc phosphate and cerium phosphate are incorporated in situ to form an amorphous encapsulated nanocrystalline structure. During long-term corrosion, Zn2+is released and deposited as corrosion products Zn（OH）2to cover weak corrosion micro-regions in the coating. Simultaneously, Ce3+released from MAO coating co-doped with zinc phosphate/cerium phosphate forms Zn（OH）2/Ce（OH）3due to the small solubility product Kspto further enhance corrosion resistance. Compared to pristine Al alloy,corrosion potential increases from -1.306 to -0.819 VSCE, and corrosion current density decreases by 4 orders of magnitude from 2.6 × 10-6to 2.5 × 10-10A·cm-2. Co-doped MAO coating significantly enhances corrosion resistance of Al alloy LY12 and shows great potential for a wide range of applications.

关键词： Aluminum alloys Micro-arc oxidation coating Corrosion resistance Zinc phosphate Cerium phosphate

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Modeling of plasmon modes at the indium antimonide–black phosphorus interface

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Journal of the Optical Society of America B: Optical physics 2025年第6期42卷 1236-1242页

作者： Umair, M. Ghaffar, A. Alkanhal, Majeed A.S. Khan, Y. Ali, M. Amir Department of Physics University of Agriculture Faisalabad Faisalabad Pakistan Department of Electrical Engineering King Saud University Riyadh Saudi Arabia School of Materials Science and Engineering Zhengzhou University Zhengzhou450001 China

In this study, numerical models of surface plasmon polaritons at the indium antimonide (InSb)–black phosphorus (BP) planar interface are analyzed to explore the influence of carrier density, temperature, and the number of BP layers on the optical properties, specifically the effective mode index, phase velocity, and normalized propagation constant, along with σac and σzz conductivities. The numerical results reveal a significant dependence of these properties on the physical parameters, where the effective mode index increases with frequency but decreases by increasing carrier density and BP layers, highlighting enhanced light confinement. Conversely, phase velocity decreases under similar conditions, highlighting strong wave localization. Temperature-induced variations highlight the tunability of the interface for different operating conditions. Furthermore, the normalized propagation constant exhibits a direct dependency on frequency and material parameters, emphasizing the potential of this heterostructure for dynamic tuning in optoelectronic and photonic applications. Overall, these findings underscore the feasibility of utilizing the InSb–BP interface in advanced, frequency-selective, and temperature-sensitive optical devices. © 2025 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.

关键词： Surface plasmon resonance

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Effect of curing temperature of phthalonitrile resin on the properties of resultant hierarchical porous carbon

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Chinese Journal of Chemical engineering 2025年第3期79卷 45-52页

作者： Xing Yun Kewen Zhang Zhaojun Chu Beitao Liu Yan Kou Xigao Jian Zhihuan Weng State Key Laboratory of Fine Chemicals Frontiers Science Center for Smart Materials Oriented Chemical Engineering Liaoning Technology Innovation Center of High Performance Resin Materials Department of Polymer Science & Engineering Dalian University of Technology Thermochemistry Laboratory Liaoning Province Key Laboratory of Thermochemistry for Energy and Materials Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences

Heteroatom-doped porous carbon materials have been widely studied due to their high specific surface area and high heteroatom content,but it is difficult to achieve high specific surface area and high heteroatom content at the same ***,a simple method is introduced to prepare N/O co-doped hierarchical porous carbon materials（DNZKs）.Phthalonitrile resins（DNZs） were prepared by using 1,3-bis（3,4-dicyanophenoxy）benzene as raw material and ZnCl2/urea as composite curing agent,and then using KOH as activator to successfully prepare DNZKs with high specific surface area,developed pores and high N/O *** porous carbon material（DNZK@400） obtained at a curing temperature of 400℃ has the highest N content(4.97%（mass）),a large specific surface area(2026 m2·g-1),a high micro pore proportion（0.9）,a high O content(7.53%（mass）),and the best specific capacitance(up to567 F·g-1at 0.1 A·g-1),which can be attribute to the high temperature resistance of the nitrogencontaining aromatic heterocyclic structure in *** the mass ratio of resin and KOH is 1:1,the specific capacitance of the sample tested by the acid three-electrode system is obtained,and it is found that the material has high cycling stability（119% specific capacitance retention after 100,000 cycle tests）.This work proposes a simple and easy-to-operate method for the preparation of multifunctional porous carbon.

关键词： High cycling stability N/O co-doped Phthalonitrile resin Porous carbon Supercapacitor

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Perovskite LiBaH_(3) for photo-assisted dinitrogen fixation

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science China Chemistry 2025年第3期68卷 1169-1174页

作者： Kaixun Cui Yeqin Guan Yongli Cai Runze Wang Qianru Wang Wenbo Gao Jianping Guo Ping Chen Department of Chemical Physics University of Science and Technology of ChinaHefei 230026China Dalian Institute of Chemical Physics Chinese Academy of SciencesDalian 116023China Center of Materials and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Establishing supply chains for future ammonia energy systems requires the development of efficient materials and processes for ammonia production under mild *** researches disclose unique functionalities of binary alkali and alkaline earth metal hydrides in mediating ammonia *** to the rich compositional and structural properties of the metalhydrogen system,we herein report that LiBaH_(3),as a narrow band gap perovskite hydride,exhibits a strong response to visible light ***,hydridic hydrogen undergoes reductive elimination of producing H_(2)and creates an electron-rich *** an environment favors dinitrogen fixation to form N-H *** on this chemical property,a chemical looping ammonia synthesis process mediated by LiBaH_(3)and driven by both photo and thermal energies was proposed and *** work demonstrates that hydride perovskites are promising candidates for mediating photo-assisted nitrogen fixation reactions.

关键词： perovskite hydride photo-assisted ammonia synthesis chemical looping

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Insights into high electric-field-induced strain in BiAlO_(3)modified Bi_(1/2)Na_(1/2)TiO_(3)films

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Journal of Advanced Ceramics 2025年第3期14卷 29-38页

作者： Muhammad Sheeraz Sung Sik Won Jong Pil Kim Sabir Ali Fazli Akram Hyoung-Su Han Bong Chan Park Tae Heon Kim Ill Won Kim Aman Ullah Chang Won Ahn Department of Physics and Energy Harvest Storage Research Center(EHSRC) University of UlsanUlsan 44610Republic of Korea Research Center Kairos Co.Ltd.Suwon 16229Republic of Korea Busan Center Korea Basic Science InstituteBusan 46742Republic of Korea Department of Physics University of Science and TechnologyBannu 28100Pakistan Center for High Technology Materials and the Department of Mechanical Engineering The University of New MexicoAlbuquerque 87131USA School of Materials Science and Engineering University of UlsanUlsan 44776Republic of Korea Electronic Materials Research Center Korea Institute of Science and TechnologySeoul 02792Republic of Korea

The development of high-strain piezoelectric materials has presented a longstanding challenge,particularly in the development of high-strain polycrystalline lead-free piezoelectric thin *** this work,we present a strategy for customizing the electrostrain in lead-free thin films through phase transition *** this study,we achieved a high recoverable electrostrain in a Bi_(1/2)Na_(1/2)TiO_(3)–BiAlO_(3)(BNT–BA)*** accomplish this,ferroelectric BNT and BNT–BA films with identical thicknesses of 500 nm were fabricated on Pt(111)/TiO_(2)/SiO_(2)/Si(100)substrates via a sol-gel *** with the BNT film,the BNT–BA film exhibited a greater polarization response and superior field strength endurance,maintaining the energy storage density beyond the breakdown field strength of the *** BNT–BA film demonstrated a large unipolar strain of S=0.43%with a normalized strain(maximum strain/maximum applied electric field(S_(max)/E_(max)))of 203 pm/V,followed by an effective transverse piezoelectric coefficient(e∗31,f)of~2.48 C/m^(2),which was more than two times greater than the value obtained for BNT(i.e.,maximum strain/maximum applied electric field(S_(max)/E_(max))=72 pm/V and e^(∗)_(31,f)of~1.09 C/m^(2)).This high strain response in the BNT–BA film can be attributed to the electric-field-induced phase transition of the mixed(i.e.,cubic and rhombohedral)phases into rhombohedral and tetragonal phases(mainly the rhombohedral structure),which recover back to the original state when the electric field is *** findings suggest new pathways for achieving significant strain levels via alternative mechanisms,potentially enhancing the effectiveness and expanding the applications of piezoelectric materials.

关键词： electrostrain piezoelectrics Bi_(1/2)Na_(1/2)TiO_(3)(BNT) BiAlO_(3)(BA) thin films phase transition

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Accurate design of a novel high-performance 11-pole triple-mode dielectric resonator BPF with fully controllable multiple transmission zeros for mobile communication base stations

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science China(Information sciences) 2025年第2期68卷 387-388页

作者： Fan LIU Zhewang MA Masataka OHIRA Dongchun QIAO Guosheng PU Masaru ICHIKAWA Hunan Provincial Key Laboratory of Flexible Electronic Materials Genome Engineering School of Physics and Electronic SciencesChangsha University of Science and Technology Graduate School of Science and Engineering Saitama University Faculty of Science and Engineering Department of Electronics Doshisha University Huawei Technologies Japan K.K.

High performance dielectric resonator(DR) bandpass filters(BPFs) are critical components in modern RF/microwave front-end systems due to their many distinctive advantages like low loss, small size, light weight, and temperature-stable properties. In recent years, the rapid development of various wireless communication techniques is demanding much more critical specifications for microwave BPFs with better performance but further reduced loss, size, and *** a prospective approach to meet these stringent requirements, BPFs using triple-mode DRs are attracting much attention from both academia and industry [1–5].

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