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Effect of cyclic heat treatment on abnormal grain growth in Fe-Mn-Al-based shape memory alloys with different Ni contents

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Journal of Materials science & technology 2023年第22期153卷 8-21页

作者： Huabei Peng Liqiu Yong Yang Zuo Jiazhen Yan Hui Wang Yuhua Wen School of Mechanical Engineering Sichuan UniversityChengdu 610065China Key Laboratory of Radiation Physics and Technology of Ministry of Education Institute of Nuclear Science and TechnologySichuan UniversityChengdu 610064China Interdisciplinary Materials Research Center Institute for Advanced StudyChengdu UniversityChengdu 610106China

Cyclic heat treatment that can continuously promote abnormal grain growth is widely used for the prepa-ration of single-crystal Fe-Mn-Al-based shape memory ***,it takes a long time to prepare large-size Fe-Mn-Al-based alloy single crystals via the reported cyclic heat ***,the long-time cyclic heat treatment at high temperatures leads to the development of defects including oxidation and a decrease in Mn,which would deteriorate superelasticity in the Fe-Mn-Al-based shape memory *** shorten the fabrication time of single crystals,the effect of the cyclic heat treatment process on the abnormal grain growth in the Fe-Mn-Al-based alloys with different Ni contents was systematically *** is found that the abnormal grain growth of Fe-Mn-Al-based alloys was not significantly affected by the Ni contents(within 2.1 at.%-6.2 at.%).In addition,the abnormal grain growth could be promoted by 1-2℃ min^(-1) cooling rate,high solution temperature,and multiple cycles,while it was insensitive to other processes including heating rate,dual-phase time as well as long-time solution *** findings can guide optimizing the fabrication process of single crystals by cyclic heat ***,the Fe_(41.9)Mn_(37.8)Al_(14.1) Ni_(6.2) single crystal prepared by the optimized cyclic heat treatment showed a recoverable strain of about 4%.

关键词： Cyclic heat treatment Ni content Abnormal grain growth Fe-Mn-Al-based shape memory alloy Superelasticity

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Search for the Sagittarius tidal stream of axion dark matter around 4.55 μeV

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Physical Review D 2023年第2期108卷 L021304-L021304页

作者： Andrew K. Yi Saebyeok Ahn Çağlar Kutlu JinMyeong Kim Byeong Rok Ko Boris I. Ivanov HeeSu Byun Arjan F. van Loo SeongTae Park Junu Jeong Ohjoon Kwon Yasunobu Nakamura Sergey V. Uchaikin Jihoon Choi Soohyung Lee MyeongJae Lee Yun Chang Shin Jinsu Kim Doyu Lee Danho Ahn SungJae Bae Jiwon Lee Younggeun Kim Violeta Gkika Ki Woong Lee Seonjeong Oh Taehyeon Seong DongMin Kim Woohyun Chung Andrei Matlashov SungWoo Youn Yannis K. Semertzidis Department of Physics Korea Advanced Institute of Science and Technology Daejeon 34141 Republic of Korea Center for Axion and Precision Physics Research Institute for Basic Science Daejeon 34051 Republic of Korea RIKEN Center for Quantum Computing (RQC) Wako Saitama 351-0198 Japan Department of Applied Physics Graduate School of Engineering The University of Tokyo Bunkyo-ku Tokyo 113-8656 Japan

We report the first search for the Sagittarius tidal stream of axion dark matter around 4.55 μeV using CAPP-12 TB haloscope data acquired in March of 2022. Our result excluded the Sagittarius tidal stream of Dine-Fischler-Srednicki-Zhitnitskii and Kim-Shifman-Vainshtein-Zakharov axion dark matter densities of ρa≳0.184 and ≳0.025 GeV/cm3, respectively, over a mass range from 4.51 to 4.59 μeV at a 90% confidence level.

关键词： Dark matter Particle dark matter Axions Galactic halos Dark matter detectors Microwave techniques

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Experimental observation of multiple topological nodal structure in LaSb_(2)

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science China(Physics,Mechanics & Astronomy) 2024年第4期67卷 138-145页

作者： Yuxi Qiao Fuyi Wang Huaiqiang Wang Zicheng Tao Zhicheng Jiang Zhengtai Liu Soohyun Cho Fayuan Zhang Qingkai Meng Wei Xia Yichen Yang Zhe Huang Jishan Liu Zhonghao Liu Zengwei Zhu Shan Qiao Yanfeng Guo Haijun Zhang Dawei Shen State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China National Synchrotron Radiation Laboratory and School of Nuclear Science and TechnologyUniversity of Science and Technology of ChinaHefei 230026China National Laboratory of Solid State Microstructures School of PhysicsNanjing UniversityNanjing 210093China School of Physics and Technology Nanjing Normal UniversityNanjing 210023China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Wuhan National High Magnetic Field Center and School of Physics Huazhong University of Science and TechnologyWuhan 430074China ShanghaiTech Laboratory for Topological Physics ShanghaiTech UniversityShanghai 201210China Institute of High-Pressure Physics School of Physical Science and Technology Ningbo UniversityNingbo 315211China Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Unconventional fermions in the immensely studied topological semimetals are the source for rich exotic topological ***,using symmetry analysis and first-principles calculations,we propose the coexistence of multiple topological nodal structure in LaSb_(2),including topological nodal surfaces,nodal lines and in particular eightfold degenerate nodal points,which have been scarcely observed in a single ***,utilizing angle-resolved photoemission spectroscopy,we confirm the existence of nodal surfaces and eightfold degenerate nodal points in LaSb_(2).The intriguing multiple topological nodal structure might play a crucial role in giving rise to the large linear *** work renews the insights into the exotic topological phenomena in LaSb_(2).

关键词： eightfold degenerate points multiple topological nodal structure angle-resolved photoemission spectroscopy linear unsaturated magnetoresistance

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Leap of Li Metal Anodes from Coin Cells to Pouch Cells:Challenges and Progress

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Electrochemical Energy Reviews 2023年第1期6卷 39-86页

作者： Qian Wang Tiantian Lu Yuanbin Xiao Jianyang Wu Lixiang Guan Lifeng Hou Huayun Du Huan Wei Xiaoda Liu Chengkai Yang Yinghui Wei Henghui Zhou Yan Yu College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024ShanxiChina Corrosion and Protection Engineering Technology Research Center of Shanxi Province Taiyuan 030024ShanxiChina Key Laboratory of Advanced Materials Technology College of Materials Science and EngineeringFuzhou UniversityFuzhou 350108FujianChina College of Chemistry and Molecular Engineering Peking UniversityBeijing 100871China

Li metal anodes have attracted tremendous attention in the last decade because of their high theoretical capacities and low electrochemical ***,until now,there has only been limited success in improving the interfacial and structural stabilities and in realizing the highly controllable and large-scale fabrication of this emerging material;these limitations have posed great obstacles to further performing fundamental and applied studies in Li metal *** this review,we focus on summarizing the existing challenges of Li metal anodes based on the leap from coin cells to pouch cells and on outlining typical methods for designing Li metal anodes on demand;we controllably engineer their surface protection layers and structure sizes by encapsulating structured Li metal inside a variety of synthetic protection *** aim to provide a comprehensive understanding and serve as a strategic guide for designing and fabricating practicable Li metal anodes for use in pouch *** and opportunities regarding this burgeoning field are critically evaluated at the end of this review.

关键词： Li metal anode Dendrites Pouch cells Air stability Energy density

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Leaky-Wave Metasurfaces 6

Leaky-Wave Metasurfaces

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6th Annual IEEE research and Applications of Photonics in Defense Conference, RAPID 2023

作者： Overvig, A. Huang, H. Xu, G. Yu, N. Alu, A. Photonics Initiative Advanced Science Research Center New York10031 United States Columbia University Department of Applied Physics and Applied Mathematics New York10027 United States

ISBN: (纸本)9781665423526

We show that symmetry-breaking design principles enable metasurfaces fed from guided modes that radiate with pointwise specification of amplitude, phase, and polarization. We demonstrate this platform for both optical frequency and radiofrequency devices, including beam-steering, polarization-switchable operation, and multiple-input multiple-output functionality. © 2023 IEEE.

关键词： Polarization

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Selective inhibition of resistant bacterial pathogens using a β-lactamase-activatable antimicrobial peptide with significantly reduced cytotoxicity

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Chinese Chemical Letters 2023年第5期34卷 241-245页

作者： Weipan Xu Zheng Ma Geetika Dhanda Jayanta Haldar Hexin Xie State Key Laboratory of Bioreactor Engineering Shanghai Key Laboratory of New Drug DesignFrontiers Science Center for Materiobiology and Dynamic ChemistryShanghai Frontier Science Research Base of Optogenetic Techniques for Cell MetabolismSchool of PharmacyEast China University of Science and TechnologyShanghai 200237China Antimicrobial Research Laboratory New Chemistry UnitJawaharlal Nehru Centre for Advanced Scientific Research(JNCASR)JakkurBengaluru 560064India School of Advanced Materials Jawaharlal Nehru Centre for Advanced Scientific Research(JNCASR)JakkurBengaluru 560064India

The expression ofβ-lactamase,particularly metallo-β-lactamase(MBL)in bacteria has caused significant resistance to clinically importantβ-lactam antibiotics,including life-saving *** peptides(AMPs)have emerged as promising therapeutic agents to combat antibiotic ***,the cytotoxic AMPs has been one of the major concerns for their applications in clinical ***,we report a novel cephalosporin-caged AMP,which shows significantly reduced cytotoxicity,hemolytic activity,and antibacterial activity but turns highly active against bacteria upon specific hydrolysis by the antimicrobial resistance-causativeβ-*** investigations demonstrate thisβ-lactamaseactivatable AMP selectively inactivates resistant bacterial pathogens over susceptible *** strategy should be applicable to other AMPs as a potential solution for the treatment of infectious diseases caused byβ-lactamase-expressing pathogenic bacteria.

关键词： Antibiotic resistance β-Lactamase Antimicrobial peptide Cytotoxicity

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MACLSTM: A Weather Attributes Enabled Recurrent Approach to Appliance-Level Energy Consumption Forecasting

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Computers, Materials & Continua 2025年第2期82卷 2969-2984页

作者： Ruoxin Li Shaoxiong Wu Fengping Deng Zhongli Tian Hua Cai Xiang Li Xu Xu Qi Liu NARI-TECH Nanjing Control System Co. Ltd.Nanjing211106China School of Software Nanjing University of Information Science&TechnologyNanjing210044China Jiangsu Province Engineering Research Center of Advanced Computing and Intelligent Services Nanjing210044China

Studies to enhance the management of electrical energy have gained considerable momentum in recent years. The question of how much energy will be needed in households is a pressing issue as it allows the management plan of the available resources at the power grids and consumer levels. A non-intrusive inference process can be adopted to predict the amount of energy required by appliances. In this study, an inference process of appliance consumption based on temporal and environmental factors used as a soft sensor is proposed. First, a study of the correlation between the electrical and environmental variables is presented. Then, a resampling process is applied to the initial data set to generate three other subsets of data. All the subsets were evaluated to deduce the adequate granularity for the prediction of the energy demand. Then, a cloud-assisted deep neural network model is designed to forecast short-term energy consumption in a residential area while preserving user privacy. The solution is applied to the consumption data of four appliances elected from a set of real household power data. The experiment results show that the proposed framework is effective for estimating consumption with convincing accuracy.

关键词： Electrical load forecasting cloud computing smart grid weather attributes energy consumption time-series analysis

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An Anonymous IoT-Based E-Health Monitoring System Using Blockchain technology

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IEEE Systems Journal 2023年第2期17卷 2422-2433页

作者： Samuel, Omaji Omojo, Akogwu Blessing Mohsin, Syed Muhammad Tiwari, Prayag Gupta, Deepak Band, Shahab S. Department of Computer Science Osara264103 Nigeria Edo State University Uzairue300281 Nigeria Shestco Applied Mathematics and Simulation Advanced Research Centre Abuja186 Nigeria Comsats University Islamabad Department of Computer Science Islamabad45550 Pakistan Aalto University Department of Computer Science Espoo02150 Finland Department of Computer Science and Engineering Maharaja Agrasen Institute of Technology Delhi110086 India Research Advisor Ucrd Chandigarh University GharuanPunjab Mohali140413 India National Yunlin University of Science and Technology Future Technology Research Center Douliou64002 Taiwan

The Internet of Things (IoT) has made it possible for health institutions to have remote diagnosis, reliable, preventive, and real-time decision-making. However, the anonymity and privacy of patients are not considered in IoT. Therefore, this article proposes a blockchain-based anonymous system, known as GarliMediChain, for providing anonymity and privacy during COVID-19 information sharing. In GarliMediChain, garlic routing and blockchain are integrated to provide low-latency communication, privacy, anonymity, trust, and security. Also, COVID-19 information is encrypted multiple times before transmitting to a series of nodes in the network. To ensure that COVID-19 information is successfully shared, a blockchain-based coalition system is proposed. The coalition system enables health institutions to share information while maximizing their payoffs. In addition, each institution uses the proposed fictitious play to study the strategies of others in order to update its belief by selecting the best responses from them. Furthermore, simulation results show that the proposed system is resistant to security-related attacks and is robust, efficient, and adaptive. From the results, the proposed proof-of-epidemiology-of-interest consensus protocol has 15.93% less computational cost than 26.30% of proof-of-work and 57.77% proof-of-authority consensus protocol, respectively. Nonetheless, the proposed GarliMediChain system promotes global collaborations by combining existing anonymity and trust solutions with the support of blockchain technology. © 2007-2012 IEEE.

关键词： COVID-19

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Centimeter-sized Cs_(3)Cu_(2)I_(5)single crystals grown by oleic acid assisted inverse temperature crystallization strategy and their films for high-quality X-ray imaging

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Journal of Energy Chemistry 2023年第4期79卷 382-389页

作者： Tao Chen Xin Li Yong Wang Feng Lin Ruliang Liu Wenhua Zhang Jie Yang Rongfei Wang Xiaoming Wen Bin Meng Xuhui Xu Chong Wang National Center for International Research on Photoelectric and Energy Materials School of Materials and EnergyYunnan UniversityKunming 650091YunnanChina College of Materials Science and Engineering Key Laboratory of Advanced Materials of Yunnan ProvinceKunming University of Science and TechnologyKunming 650093YunnanChina Centre for Translational Atomaterials Swinburne University of TechnologyHawthorn 3122Australia

Low-dimensional halide perovskites have become the most promising candidates for X-ray imaging,yet the issues of the poor chemical stability of hybrid halide perovskite,the high poisonousness of lead halides and the relatively low detectivity of the lead-free halide perovskites which seriously restrain its ***,we developed a solution inverse temperature crystal growth(ITCG)method to bring-up high quality Cs_(3)Cu_(2)I_(5)crystals with large size of centimeter order,in which the oleic acid(OA)is introduced as an antioxidative ligand to inhibit the oxidation of cuprous ions effieiently,as well as to decelerate the crystallization rate *** on these fine crystals,the vapor deposition technique is empolyed to prepare high quality Cs_(3)Cu_(2)I_(5)films for efficient X-ray *** surface morphology,high light yields and short decay time endow the Cs_(3)Cu_(2)I_(5)films with strong radioluminescence,high resolution(12 lp/mm),low detection limits(53 nGyair/s)and desirable ***,the Cs_(3)Cu_(2)I_(5)films have been applied to the practical radiography which exhibit superior X-ray imaging *** work provides a paradigm to fabricate nonpoisonous and chemically stable inorganic halide perovskite for X-ray imaging.

关键词： Inverse temperature crystal growth Cs_(3)Cu_(2)I_(5)single crystal Vapor deposition Cs_(3)Cu_(2)I_(5)films X-ray imaging

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Effects of Hydrogen Charging on Mechanical Properties of CLAM Steel at Different Strain Rates

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Acta Metallurgica Sinica(English Letters) 2023年第7期36卷 1203-1210页

作者： Yue-Yang Gu Han-Yu Zhao Wei Chen Wei Yan Liang-Yin Xiong De-Min Chen School of Materials Science and Engineering University of Science and Technology of ChinaShenyang110016China Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang110016China

The China low-activation martensitic(CLAM)steel has been proposed as a candidate structural material for nuclear fusion *** is essential to study the influence of hydrogen charging and strain rate on the tensile behavior of CLAM steel considering its service *** this study,CLAM steel was investigated using tensile tests operated at room temperature before and after hydrogen *** results showed that the elongation loss increased significantly with the increase of the hydrogen charging current density at either a low or a high strain rate,which is related to the hydrogen content in the *** hydride was systematically studied,including the morphology and the thermal stability as well as the effects on mechanical *** possible mechanism of the formation of hydride during hydrogen charging has been analyzed based on the interaction between alloying elements and hydrogen.

关键词： China low-activation martensitic(CLAM)steel Hydrogen embrittlement Mechanical properties Hydride

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