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arXiv 2023年

作者： Liu, Nana Tan, Liu Chen, Kaijian Hong, Peilong Mo, Xiaoming Zou, Bingsuo Liang, Yi Guangxi Key Lab for Relativistic Astrophysics Center on Nanoenergy Research School of Physical Science and Technology Guangxi University Guangxi Nanning530004 China School of Mathematics and Physics Anqing Normal University Anhui Anqing246133 China The Moe Key Laboratory of Weak-Light Nonlinear Photonics Nankai University Tianjin300457 China School of Physical Science and Technology School of Resources Environment and Materials Key Laboratory of New Processing Technology for Nonferrous Metals and Materials Guangxi University Nanning530004 China State Key Laboratory of Featured Metal Materials and Lifecycle Safety for Composite Structures Nanning530004 China

We conducted a comprehensive study on the robust propagation of the same spot-size Gaussian beam (SSGB), same envelope Gaussian beam (SEGB), Circular Airy beam (CAB) and Circular Pearcey beam (CPB) in complex environments. Our findings clearly demonstrate that autofocusing beams exhibit higher stability in propagation compared with the Gaussian beams. To validate our results, we statistically analyze the intensity fluctuation of autofocusing beams and Gaussian beams. The analysis reveals that the intensity fluctuations of autofocusing beams are significantly smaller than that of Gaussian beams. Furthermore, we study the variation of the coherence factor and find that the coherence of autofocusing beams is better than that of Gaussian beams under turbulence. Additionally, we observe the change of the scintillation index (SI) with the propagation distance z, and our results show that autofocusing beams exhibit less oscillation than Gaussian beams, indicating that autofocusing beams propagate in complex environments with less distortion and fewer intensity fluctuation. Overall, our results suggest that autofocusing beams are promising for applications such as optical trapping and manipulation in complex environments. Our study provides valuable insights into the selection of stable beams that exhibit high intensity and high field gradient at the focal position in complex environments. Copyright © 2023, The Authors. All rights reserved.

关键词： Gaussian beams

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Back Cover Image, Volume 6, Number 10, October 2024

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Carbon Energy 2024年第10期6卷

作者： Qihang Ding Zewen Jiang Kean Chen Hui Li Jingzhe Shi Xinping Ai Dingguo Xia Hubei Key Lab of Electrochemical Power Sources College of Chemistry & Molecular Science Wuhan University Wuhan China Beijing Key Laboratory of Theory and Technology for Advanced Batteries Materials College of Engineering Peking University Beijing China State Key Laboratory of New Textile Materials & Advanced Processing Technologies Wuhan Textile University Wuhan China Wuhan Britain-China School Wuhan China

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Controllable nonlinear propagation of partially incoherent Airy beams

arXiv

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arXiv 2023年

作者： Chen, Kaijian Zhang, Peiyu Liu, Nana Tan, Liu Hong, Peilong Zou, Bingsuo Xu, Jingjun Liang, Yi Guangxi Key Lab for Relativistic Astrophysics Center on Nanoenergy Research School of Physical Science and Technology Guangxi University Guangxi Nanning530004 China Chengdu610054 China The MOE Key Laboratory of Weak-Light Nonlinear Photonics TEDA Applied Physics Institute School of Physics Nankai University Tianjin300457 China School of Physical Science and Technology School of Resources Environment and Materials Key Laboratory of new Processing Technology for Nonferrous Metals and Materials Guangxi University Nanning530004 China State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures Nanning530004 China

The self-accelerating beams such as the Airy beam show great potentials in many applications including optical manipulation, imaging and communication. However, their superior features during linear propagation could be easily corrupted by optical nonlinearity or spatial incoherence individually. Here we investigate how the interaction of spatial incoherence and nonlinear propagation affect the beam quality of Airy beam, and find that the two destroying factors can in fact balance each other. Our results show that the influence of coherence and nonlinearity on the propagation of partially incoherent Airy beams (PIABs) can be formulated as two exponential functions that have factors of opposite signs. With appropriate spatial coherence length, the PIABs not only resist the corruption of beam profile caused by self-focusing nonlinearity, but also exhibits less anomalous diffraction caused by the self-defocusing nonlinearity. Our work provides deep insight into how to maintain the beam quality of self-accelerating Airy beams by exploiting the interaction between partially incoherence and optical nonlinearity. Our results may bring about new possibilities for optimizing partially incoherent structured field and developing related applications such as optical communication, incoherent imaging and optical manipulations. © 2023, CC BY.

关键词： Optical communication

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Synergistic“Anchor‑Capture”Enabled by Amino and Carboxyl for Constructing Robust Interface of Zn Anode

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Nano-Micro Letters 2023年第11期15卷 265-280页

作者： Zhen Luo Yufan Xia Shuang Chen Xingxing Wu Ran Zeng Xuan Zhang Hongge Pan Mi Yan Tingting Shi Kai Tao Ben Bin Xu Yinzhu Jiang School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027People’s Republic of China ZJU‑Hangzhou Global Scientific and Technological Innovation Center Zhejiang UniversityHangzhou 311215People’s Republic of China State Key Laboratory of Fluid Power and Mechatronic Systems Key Laboratory of Advanced Manufacturing Technology of Zhejiang ProvinceSchool of Mechanical EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Institute of Science and Technology for New Energy Xi’an Technological UniversityXi’an 710021People’s Republic of China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030People’s Republic of China Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials Department of PhysicsJinan UniversityGuangzhou 510632GuangdongPeople’s Republic of China Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials Hangzhou 311200People’s Republic of China Mechanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle upon Tyne NE18STUK

While the rechargeable aqueous zinc-ion batteries(AZIBs)have been recognized as one of the most viable batteries for scale-up application,the instability on Zn anode–electrolyte interface bottleneck the further development ***,we utilize the amino acid glycine(Gly)as an electrolyte additive to stabilize the Zn anode–electrolyte *** unique interfacial chemistry is facilitated by the synergistic“anchor-capture”effect of polar groups in Gly molecule,manifested by simultaneously coupling the amino to anchor on the surface of Zn anode and the carboxyl to capture Zn^(2+)in the local *** such,this robust anode–electrolyte interface inhibits the disordered migration of Zn^(2+),and effectively suppresses both side reactions and dendrite *** reversibility of Zn anode achieves a significant improvement with an average Coulombic efficiency of 99.22%at 1 mA cm^(−2)and 0.5 mAh cm^(−2)over 500 *** at a high Zn utilization rate(depth of discharge,DODZn)of 68%,a steady cycle life up to 200 h is obtained for ultrathin Zn foils(20μm).The superior rate capability and long-term cycle stability of Zn–MnO_(2)full cells further prove the effectiveness of Gly in stabilizing Zn *** work sheds light on additive designing from the specific roles of polar groups for AZIBs.

关键词： Zn anode–electrolyte interface Polar groups Synergistic“anchor-capture”effect Side reactions Dendrite growth

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Caustic analysis of partially coherent self-accelerating beams: Investigating self-healing property

arXiv

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arXiv 2023年

作者： Zhang, Peiyu Chen, Kaijian Zhang, Chuanhou Liang, Jiafang Deng, Shengyu Hong, Peilong Zou, Bingsuo Liang, Yi Guangxi Key Lab for Relativistic Astrophysics Center on Nanoenergy Research School of Physical Science and Technology Guangxi University Guangxi Nanning530004 China Chengdu610054 China The MOE Key Laboratory of Weak-Light Nonlinear Photonics TEDA Applied Physics Institute School of Physics Nankai University Tianjin300457 China School of Physical Science and Technology School of Resources Environment and Materials Key Laboratory of new Processing Technology for Nonferrous Metals and Materials Guangxi University Nanning530004 China State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures Nanning530004 China

We employed caustic theory to analyze the propagation dynamics of partially coherent self-accelerating beams such as self-healing of partially coherent Airy beams. Our findings revealed that as the spatial coherence decreases, the self-healing ability of beams increases. This result have been demonstrated both in simulation and experiment. This is an innovative application of the caustic theory to the field of partially coherent structured beams, and provides a comprehensive understanding of self-healing property. Our results have significant implications for practical applications of partially coherent beams in fields such as optical communication, encryption, and imaging. Copyright © 2023, The Authors. All rights reserved.

关键词： Optical communication

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Annual research review of perovskite solar cells in 2023

材料展望（英文）

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材料展望（英文） 2024年第2期3卷 161-213页

作者： Qisen Zhou Xiaoxuan Liu Zonghao Liu Yanqing Zhu Jianfeng Lu Ziming Chen Canjie Li Jing Wang Qifan Xue Feifei He Jia Liang Hongyu Li Shenghao Wang Qidong Tai Yiqiang Zhang Jiehua Liu Chuantian Zuo Liming Ding Zhenghong Xiong Renhao Zheng Huimin Zhang Pengjun Zhao Xi Jin Pengfei Wu Fei Zhang Yan Jiang Huanping Zhou Jinsong Hu Yang Wang Yanlin Song Yaohua Mai Baomin Xu Shengzhong Liu Liyuan Han Wei Chen Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyLuoyu Road 1037Wuhan 430074People's Republic of China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyLuoyu Road 1037Wuhan 430074People's Republic of China Optics Valley Laboratory Hubei 430074People's Republic of China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070People's Republic of China State Key Laboratory of Luminescent Materials and Devices Institute of Polymer Optoelectronic Materials and DevicesSchool of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510640People's Republic of China School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006People's Republic of China Department of Materials Science State Key Laboratory of Photovoltaic Science and TechnologyFudan University220 Handan RoadShanghai 200433People's Republic of China Materials Genome Institute Shanghai UniversityShangda Rd.99Shanghai 200444People's Republic of China The Institute of Technological Sciences Wuhan UniversityWuhan 430072People's Republic of China College of Chemistry Zhengzhou UniversityZhengzhou 450001People's Republic of China Future Energy Laboratory School of Materials Science and EngineeringHefei University of TechnologyHefei 230009People's Republic of China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190People's Republic of China School of Chemical Engineering Center for Antibonding Regulated CrystalsSungkyunkwan UniversitySuwon 16419Republic of Korea State Key Laboratory of Functional Materials and Devices for Special Environmental Conditions Xinjiang Key Laboratory of Electronic Information Materials and Devices Xinjiang Technical Institute of Physics & ChemistryCAS40-1 South Beijing RoadUrumqi 830011People's Republic of China S

Perovskite(PVK)solar cells(PSCs)have garnered considerable research interest owing to their cost-effectiveness and high efficiency.A systematic annual review of the research on PSCs is essential for gaining a comprehensive understanding of the current research ***,systematic analysis of the research papers on PSCs reporting key findings in 2023 was *** on the results,the papers were categorized into six classifications,including regular n-i-p PSCs,inverted p-i-n PSCs,PVK-based tandem solar cells,PVK solar modules,device stability,and lead toxicity and green ***,a detailed overview and summary of the annual research advancements within each classification were ***,this review serves as a valuable resource for guiding future research endeavors in the field of PSCs.

关键词： perovskite solar cells annual review systematic review

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Interfacial Sulfur-Sensitization of PtNi Nanoalloy for Efficient Electrocatalytic Hydrogen Production in Alkaline Simulated Seawater

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Chemistry of materials 2023年第20期35卷 8529-8539页

作者： Fei Yu Yu-Xuan Xiao Jiang-Bo Chen Ge Tian Xiong Yang Fu-Fei Pu Jin-Yi Ouyang Kenneth I. Ozoemena Mark D. Symes Roberto M. Torresi Fazhou Wang Xiao-Yu Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & State Key Laboratory of Silicate Materials for Architectures & Shenzhen Research Institute School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China School of Chemical Engineering and Technology Sun Yat-sen University Zhuhai 519082 China Molecular Sciences Institute School of Chemistry University of the Witwatersrand Johannesburg 2050 South Africa WestCHEM School of Chemistry University of Glasgow Glasgow G12 8QQ United Kingdom Departamento de Química Fundamental Instituto de Química Universidade de São Paulo Av. Lineu Prestes 748 São Paulo 05508000 Brazil

Optimization of the electronic structure and surface physicochemical properties of PtNi nanoalloys by incorporation of sulfur (S) is an effective strategy for improving the efficiency of the electrocatalytic hydrogen evolution reaction (HER). However, few studies have been carried out to assess the seawater electrocatalytic performance of PtNi by incorporation of interfacial S from CdS nanocrystals. In this study, a simple method is developed to prepare CdS/PtNi, composed of a PtNi alloy supported with CdS quantum dots (QDs). Experimental data demonstrate that interfacial S-sensitization enhances the electron density of PtNi nanoalloy in CdS/PtNi. Therefore, CdS/PtNi exhibits superior performance toward HER in seawater. Specifically, CdS/PtNi displays a low overpotential of 22 mV at a current density of 10 mA cm–2, a higher specific activity of 24.7 mA cm–2at −0.07 V, and superior durability in seawater, all of which metrics exceed those of commercial Pt/C. Theoretical calculations provide additional evidence that interfacial S-sensitization of PtNi alloy raises electron densities, lowers the d-band center, facilitates water molecule adsorption, resistances to Cl–, and reduces the hydrogen adsorption Gibbs free energy of PtNi alloy. This study provides new opportunities for the design of efficient and stable electrocatalysts for large-scale production of hydrogen from seawater.

关键词： Alloys Cadmium sulfide Evolution reactions Platinum Seawater

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Tailoring nanoprecipitates for ultra-strong high-entropy alloys via machine learning and prestrain aging

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Journal of materials Science & technology 2021年第10期69卷 156-167页

作者： Tao Zheng Xiaobing Hu Feng He Qjngfeng Wu Bin Han Chen Da Junjie Li Zhijun Wang Jincheng Wang Ji-jung Kai Zhenhai Xia C.T.Liu State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi'an 710072China Center for Advanced Nuclear Safety and Sustainable Development City University of Hong KongHong KongChina Institute of Atomic and Molecular Science.Shaanxi University of Science and Technology Xi'an710021China Department of Material Science and Engineering College of Science and EngineeringCity University of Hong KongHong KongChina Department of Materials Science and Engineering University of North TexasDentonTXUSA Center for Advanced Structural Materials Department of Mechanical EngineeringCollege of Science and EngineeringCity University of Hong KongHong KongChina

The multi-principal-component concept of high-entropy alloys(HEAs) generates numerous new *** them,nanoscale precipitated HEAs have achieved superior mechanical properties and shown the potentials for structural ***,it is still a great challe nge to find the optimal alloy within the numerous *** to now,the reported nanoprecipitated HEAs are mainly designed by a trialand-error approach with the aid of phase diagram calculations,limiting the development of structural *** the current work,a novel method is proposed to accelerate the development of ultra-strong nanoprecipitated *** the guidance of physical metallurgy,the volume fraction of the required nanoprecipitates is designed from a machine learning of big data with thermodynamic foundation while the morphology of precipitates is kinetically tailored by prestrain *** a proof-of-principle study,an HEA with superior strength and ductility has been designed and systematically *** newly developed γ’-strengthened HEA exhibits 1.31 GPa yield strength,1.65 GPa ultimate tensile strength,and 15% tensile *** probe tomography and transmission electron microscope characterizations reveal the well-controlled high γ’ volume fraction(52%) and refined precipitate size(19 nm).The refinement of nanoprecipitates originates from the accelerated nucleation of the γ’ phase by prestrain aging.A deeper understanding of the excellent mechanical properties is illustrated from the aspect of strengthening mecha ***,the versatility of the current design strategy to other precipitation-hardened alloys is discussed.

关键词： High-entropy alloys Machine learning Prestrain aging Mechanical properties Strengthening mechanisms

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Accelerated High-Temperature Creep Failure Induced by Internal Nitridation of In617 Superalloy

SSRN

引用

SSRN 2022年

作者： Wang, Yue Liu, Qu Li, Kejian Cai, Zhipeng Shi, Li Wang, Haitao Institute of Nuclear and New Energy Technology Tsinghua University Beijing100084 China Department of Mechanical Engineering Tsinghua University Beijing100084 China Key Laboratory for Advanced Materials Processing Technology Ministry of Education Beijing100084 China State Key Laboratory of Tribology Tsinghua University Beijing100084 China Collaborative Innovation Center of Advanced Nuclear Energy Technology Tsinghua University Beijing100084 China

Internal nitridation behavior was investigated in high-temperature creep experiments of IN617 superalloy. The results exhibited that nitrogen in air influenced microstructure significantly and deteriorated creep life to the level far below the fitting Larson-Miller curve. As compared to oxidation that occurred on the surface, nitridation could penetrate into interior regions of IN617. Furthermore, substantial nitrides, including π phase, AlN, Cr2N and (Ti,Cr)N, were found to precipitate in IN617 with different morphologies and orientations. The formation of plentiful brittle π phase and AlN in high-temperature duration was dominantly responsible for creep property deterioration. © 2022, The Authors. All rights reserved.

关键词： Superalloys

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Revelation of new Magnetic Domain Wall Category and Spin-Density-Wave Boundary state in Itinerant Magnet

arXiv

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arXiv 2024年

作者： Hu, Yining Wang, Xu Chen, Chen Zhang, Qingle Zhao, Dongming Zhang, Tianzhen Wang, Chenxi Wang, Qiang-Hua Feng, Donglai Zhang, Tong Department of Physics State Key Laboratory of Surface Physics and Advanced Material Laboratory Fudan University Shanghai200438 China New Cornerstone Laboratory National Synchrotron Radiation Laboratory School of Nuclear Science and Technology University of Science and Technology of China Hefei230027 China National Laboratory of Solid State Microstructures School of Physics Nanjing University Nanjing210093 China Collaborative Innovation Center for Advanced Microstructures Nanjing210093 China Hefei National Laboratory Hefei230088 China Shanghai Research Center for Quantum Sciences Shanghai201315 China Zhejiang Institute of Photoelectronics Zhejiang Institute for Advanced Light Source Zhejiang Normal University Jinhua321004 China Interdisciplinary Materials Research Center School of Materials Science and Engineering Tongji University Shanghai201804 China

Conventional magnetic domain walls are typically characterized by reorientation of local moments. However, what occurs at the boundary of itinerant magnets is largely unknown. Here using spin-sensitive scanning tunneling microscopy, we investigated the microscopic boundaries of spin-density-wave (SDW) state in a prototypical itinerant antiferromagnet-chromium (Cr). At the boundary of two incommensurate SDW domains, we observed that the spins undergo finite-scale decay rather than reorientation, which generated a double-Q SDW state accompanied by a second-order charge modulation. In the commensurate SDW domains, a clear SDW energy gap is observed. The screw dislocations induced "half" vortex and anti-vortex of SDW, paired by antiphase domain wall. We find the spin density vanished at such antiphase domain walls;while for the first time, we observed intriguing SDW in-gap states at the boundary, resembling the Andreev bound states in superconductors. These unique SDW boundary structures can be viewed as consequences of local interference of two SDWs, either with different Q or reversed phases. Our findings thus reveal a new category of magnetic domain wall-the "interference wall", with a mechanism rooted in itinerant nature of the system. © 2024, CC BY.

关键词： Screw dislocations

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