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Multiphase cooperation for multilevel strain accommodation in a single-crystalline BiFeO_(3) thin film

Chinese Physics B 2024年第9期33卷 57-66页

作者： Wooseon Choi Bumsu Park Jaejin Hwang Gyeongtak Han Sang-Hyeok Yang Hyeon Jun Lee Sung Su Lee Ji Young Jo Albina Y.Borisevich Hu Young Jeong Sang Ho Oh Jaekwang Lee Young-Min Kim department of Energy Science Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Samsung Electronics Hwaseong 18448Republic of Korea department of Physics Pusan National UniversityBusan 46241Republic of Korea LG Energy Solution Daejeon 34122Republic of Korea department of Materials Science and engineering Kangwon National UniversityRepublic of Korea School of Materials Science and engineering Gwangju Institute of Science and Technology(GIST)Gwangju 61005Republic of Korea center for Nanophase Materials Sciences Oak Ridge National LaboratoryTN 37831USA Graduate School of Semiconductor Materials and devices engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan 44919Republic of Korea department of Energy engineering KENTECH Institute for Energy Materials and DevicesKorea Institute of Energy Technology(KENTECH)Naju 58330Republic of Korea

The functionalities and diverse metastable phases of multiferroic BiFeO_(3)(BFO)thin films depend on the misfit *** mixed phase-induced strain relaxation in multiphase BFO thin films is well known,it is unclear whether a singlecrystalline BFO thin film can accommodate misfit strain without the involvement of its ***,understanding the strain relaxation behavior is key to elucidating the lattice strain–property *** this study,a correlative strain analysis based on dark-field inline electron holography(dIH)and quantitative scanning transmission electron microscopy(STEM)was performed to reveal the structural mechanism for strain accommodation of a single-crystalline BFO thin *** nanoscale dIH strain analysis results indicated a random combination of multiple strain states that acted as a primary strain relief,forming irregularly strained *** STEM-based bond length measurement of the corresponding strained nanodomains revealed a unique strain accommodation behavior achieved by a statistical combination of multiple modes of distorted structures on the unit-cell *** globally integrated strain for each nanodomain was estimated to be close to􀀀1.5%,irrespective of the nanoscale strain states,which was consistent with the fully strained BFO film on the SrTiO_(3) *** functional theory calculations suggested that strain accommodation by the combination of metastable phases was energetically favored compared to single-phase-mediated *** discovery allows a comprehensive understanding of strain accommodation behavior in ferroelectric oxide films,such as BFO,with various low-symmetry polymorphs.

关键词： BiFeO_(3) scanning transmission electronmicroscopy electron holography multiferroic material strain mapping

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应用本构模型和神经网络模型预测铝/镁基纳米复合材料的高温流变行为(英文)

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中国有色金属学会会刊：英文版 2013年第6期23卷 1737-1750页

作者： V.SENTHILKUMAr A.BALAJI d.ArULKIrUBAKArAN department of Production engineering National Institute of Technology

为了预测Al/Mg基纳米复合材料的高温流变行为,在不同的应变速率(0.01-1.0s-)和温度(523,623和1723K)的条件下进行热压缩试验,利用所得到的应力-应变数据,开发了本构模型,比如一般流动方程。阿累尼乌斯双曲模型、Johnson-Cook(JC)和改性... 详细信息

为了预测Al/Mg基纳米复合材料的高温流变行为,在不同的应变速率(0.01-1.0s-)和温度(523,623和1723K)的条件下进行热压缩试验,利用所得到的应力-应变数据,开发了本构模型,比如一般流动方程。阿累尼乌斯双曲模型、Johnson-Cook(JC)和改性的Zerilli-Armstrong(ZA)模型及人工神经网络(ANN)模型。通过使用统计参数,例如均方根误差(rMSE)、回归系数(r2)、平均相对误差(MrE)和分散指数(Is),比较了人工神经网络和不同的本构模型。结果表明,人工神经网络模型对AA5083-2%TiC复合材料的热变形流动应力的评估准确性更高。

关键词：热压缩 Johnson-Cook(JC)模型改性Zerilli-Armstrong(ZA)模型阿累尼乌斯(Ar)双曲模型流动应力纳米复合材料

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Trustworthy dNN partition for blockchain-enabled digital twin in wireless IIoT networks

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Science China(Information Sciences) 2024年第11期67卷 373-374页

作者： Xiumei dENG Jun LI Long SHI Kang WEI Ming dING Yumeng SHAO Wen CHEN Shi JIN Pillar of Information Systems technology and design Singapore University of Technology and Design National Mobile Communications research Laboratory Southeast University School of Electronic and Optical engineering Nanjing University of Science and Technology department of Computing Hong Kong Polytechnic University data61 CSIRO department of Electronics engineering Shanghai Jiao Tong University

The integration of artificial intelligence(AI) and digital twin(dT) technology has revolutionized the industrial Internet of Things(IIoT), enabling advanced automation and intelligent manufacturing [1]. Through sophisticated interactions between physical entities and their virtual counterparts,AI-driven dTs facilitate performance monitoring, analysis,simulation, and optimization of physical assets, enabling predictive maintenance and informed decision-making [2].

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Influence of thermal history on the crystallization behavior of high-Bs Fe-based amorphous alloys

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Science China(Physics,Mechanics & Astronomy) 2023年第5期66卷 173-180页

作者： Bowen Zang Lijian Song richard Parsons Jie Shen Meng Gao Yan Zhang Juntao Huo Yonghao Sun Fushan Li Kiyonori Suzuki Jun-Qiang Wang Weihua Wang CAS Key Laboratory of Magnetic Materials and devices and Zhejiang Province Key Laboratory of Magnetic Materials and Application TechnologyNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China center of Materials Science and Optoelectronics engineering University of Chinese Academy of SciencesBeijing 100049China department of Materials Science and engineering Monash UniversityClayton VIC 3800Australia Institute of Physics Chinese Academy of SciencesBeijing 100190China School of Materials Science and engineering Zhengzhou UniversityZhengzhou 450001China

A crucial step in creating cutting-edge soft magnetic alloys is the nanocrystallization of Fe-based amorphous ***,it is unclear how the thermal history affects the *** this work,high-precision nanocalorimetry and in-situ hightemperature transmission electron microscopy are used to systematically examine how the pre-annealing relaxation process affects the nanocrystallization of Fe-based amorphous *** discover that the glass with more thermal energy storage will crystallize into superb nanocrystalline structures with exceptionally advanced soft *** soft magnetic properties of Fe-B nanocrystalline alloys can be improved by increasing the relaxation *** finding provides solid and clear evidence for the influences of thermal history on crystallization behavior for Fe-based amorphous alloys,which is helpful for designing advanced soft magnetic nanocrystalline alloys.

关键词： amorphous alloys enthalpy relaxation nanocrystallization microstructure development soft magnetic properties

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Effect of Alloying Tin on the Corrosion Characteristics of Austenitic Stainless Steel in Sulfuric Acid and Sodium Chloride Solutions

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Acta Metallurgica Sinica(English Letters) 2015年第9期28卷 1089-1096页

作者： Min Sun Ming Luo Chao Lu Tian-Wei Liu Yan-Ping Wu Lai-Zhu Jiang Jin Li department of Materials Science Fudan University research and development center Baosteel Co. Ltd. Science and technology on Surface Physics and Chemistry Laboratory

The effect of tin on general and pitting corrosion behaviors of the austenitic stainless steel in sulfuric acid and sodium chloride solutions was investigated by potentiostatic critical pitting temperature, cyclic potentiodynamic polarization, electrochemical impedance spectroscopy, and scanning electron microscopy. The results showed that there is an optimal tin addition which is around （0.062-0.1） wt%, and the general corrosion resistance of B316LX with 0.08 wt% tin addition in boiling H2SO4 increased remarkably with a corrosion rate of an order of magnitude lower than that of 316L. Hydrolyzation of tin ions induces more metastable pit occurrence on the material surface. However, the pitting resistance of B316LX increases because tin oxides improve the density and uniformity of the passive film, and hydroxide and oxide of tin inhabit the process of pit growing. The effect of tin on pitting corrosion process is illustrated schematically.

关键词： Stainless steel Corrosion resistance Passivation Pitting corrosion

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Prediction of salmon (Salmo salar) quality during refrigeration storage based on dielectric properties

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International Journal of Agricultural and Biological engineering 2021年第4期14卷 262-269页

作者： Jialing He Feng Li Yang Jiao College of Food Science and technology Shanghai Ocean UniversityShanghai 201306China Food Thermal Processing engineering technology research center Shanghai Ocean UniversityShanghai 201306China

dielectric properties are validated to be correlated with the changes of food quality during 4℃ storage,thus it could be used as predictive indicators for the quality parameters of salmon(Salmo salar)during cold *** open-ended coaxial detection method was used to determine the dielectric properties(dielectric constantε'and dielectric lossε")of salmon at the frequency range of 20-2500 MHz,and to explore the relationship between dielectric properties and volatile base nitrogen(TVB-N),thiobarbituric acid reactants(TBArS),total viable counts(TVC),pH and K-value in salmon fillets during storage for 7 *** showed that the TVB-N,TBArS,TVC and K-value of salmon increased linearly with the increase of storage time,and the pH decreased firstly and increased ***,the dielectric properties(ε'andε")decreased with the increase of frequency,and increased with the increase of storage *** 7 d storage,ε"increased the most at the frequency of 27.12 and 40.68 MHz,while at the frequency of 915 MHz and 2450 MHz,the increase ofε"was *** analyzed by Pearson correlation analysis showed that significant correlation(pd betweenε"and TVB-N and TBArS at the frequency of 27.12,40.68,100.00,300 and 915 *** results of the partial least square(PLS)model showed that all the determination coefficients(r2pred)were over *** for TBArS,the r2pred of PLS-ε'and PLS-ε"were 0.913 and 0.920,respectively,and the root mean square error of prediction(rMSEP)were 0.041 and 0.039,***,the highest r2pred for PLS-ε'and PLS-ε"both occurred in ***,the predicted values against measured values of TVB-N,TBArS and TVC of salmon presented a good linear *** linear coefficient r2 of TVB-N,TBArS and TVC for PLS-ε'were 0.937,0.910 and 0.917 respectively,and 0.942,0.917 and 0.933 respectively for PLS-ε".The results demonstrated the dielectric properties combined with PLS analysis can be used as a rapid and non-destructi

关键词： seafood physiochemical quality dielectric properties PLS regression non-destructive food analysis Salmon

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Transpiration-inspired Capillary for Synchronous Synthesis and Patterning of Silver Nanoparticles

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chemical research in Chinese Universities 2023年第1期39卷 133-138页

作者： CHEN Bingda ZHANG Zelong SU Meng QIN Feifej PAN Qi XIE daixi YANG Xu ZHANG Kun ZHANG Zeying XIE Hongfei CArMELIET Jan SONG Yanlin Key Laboratory of Green Printing Institute of ChemistryChinese Academy of SciencesBeijing Engineering Research Center of Nanomaterials for Green Printing TechnologyBeijing National Laboratory for Molecular Sciences(BNLMS)Beijing100190P.R.China University of Chinese Academy of Sciences Beijing100049P.R.China Institute of Extreme Mechanics and School of Aeronautics Northwestern Polytechnical UniversityXi’an710072P.R.China Chair of Building Physics Department of Mechanical and Process EngineeringETH ZürichZürich8092Switzerland

Traditional synthesis strategy of nanomaterials with complicated process and high cost limits their ***,we propose a facile process for the synchronous synthesis and patterning of silver nanoparticles(Ag NPs)through the self-driven microchannel reactor with the capillary effect inspired by *** evaporation contributes to capillary and accumulation effects in the *** silver reactant-containing droplets can be spontaneously divided and distributed in multiple microchannels during the whole fabrication process by the capillary *** newly formed Ag NPs at the gas-liquid interface can be assembled on both sides of the microchannels by the accumulation *** capillary effect decreases the disturbances,which ensures the uniformity of the *** the combination of microchannels with different widths,various Ag NPs-assembled patterns with stable electrical properties are *** efficient strategy with a simple fabrication procedure is towards the technological engineering of nanoscale architected materials.

关键词： Transpiration Capillary effect droplet manipulation Nanoparticle Patterning

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Point-of-Care Immunoassays with Tunable detection range for detecting Infection in Intensive Care Unit

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CCS Chemistry 2021年第5期3卷 1562-1572页

作者： Lei Mou Zulan Li Jie Qi Xingyu Jiang department of Biomedical engineering Southern University of Science and TechnologyGuangdong 518055 National center for NanoScience and technology University of Chinese Academy of SciencesBeijing 100190 reproduction center of the 306th Hospital of People’s Liberation Army Beijing 100101

One of the difficulties of a multiplexed analytical assay is matching the concentration range of different ***,the authors develop an automatic,multiplexed point-of-care(POC)immunoassay that allows detecting C-reactive protein(CrP),procalcitonin(PCT),and interleukin 6(IL-6)in 50μL serum samples with limits of detection 1.87μg/mL,0.17 ng/mL,and 49.75 pg/mL,*** authors use electrospun fibers and surface chemistry of gold nanoparticles(AuNPs)to adjust the detection range of different *** authors have proposed some new diagnostic indicators(mScore and mScorePlus)that combine the results of CrP,PCT,IL-6,and complete blood counts(CBCs).The authors also tracked changes in CrP,PCT,and IL-6 of patients in an intensive care unit(ICU).The authors find that mScore and mScorePlus have advantages in improving the diagnostic accuracy and providing more analytical *** and mScorePlus are effective tools to detect infections,differentiate bacterial and viral infections,and monitor *** multiple markers into one straightforward parameter is an effective method for analytical *** authors believe that this method provides a general way for chemists to develop increasingly accurate detection methods and indicators.

关键词： microfluidics immunoassay multiplexed assay intensive care unit point-of-care testing

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Band convergence boosted high thermoelectric performance of Zintl compound Mg_(3)Sb_(2) achieved by biaxial strains

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Journal of Materiomics 2022年第5期8卷 1086-1094页

作者： Suiting Ning Shan Huang Ziye Zhang Ning Qi Man Jiang Zhiquan Chen Xinfeng Tang Hubei Nuclear Solid Physics Key Laboratory Department of PhysicsWuhan UniversityWuhan430072China department of Nuclear engineering and technology School of Energy and Power EngineeringHuazhong University of Science and TechnologyWuhan430073China State Key Laboratory of Advanced technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China

Mg_(3)Sb_(2) as a Zintl compound is a promising thermoelectric material with the intrinsically low lattice thermal conductivity and excellent n-type electrical properties,but its p-type electrical transport properties are ***,the thermoelectric performance of Mg_(3)Sb_(2) under the effect of biaxial strain is investigated by using first-principles method and Boltzmann transport *** application of biaxial strain enables tuning the band structure of Mg_(3)Sb_(2) in such a way that the band degeneracy of both the conduction band and valence band *** the biaxial strain increases,the Seebeck coefficient of ptype Mg_(3)Sb_(2) has a remarkable increase,leading to a significant improvement in power *** is mainly ascribed to the achievement of valence band orbital ***,the lattice thermal conductivity exhibits very slight biaxial strain dependence within the strain range considered in this work,which increases from 1.28 to 1.62 W m^(-1) K^(-1) at 300 ***,the highest ZT of p-type Mg_(3)Sb_(2) at 700 K can be up to 2.6 along the in-plane direction under-2.5%biaxial strain,which is almost three times that of the unstrained *** realization of high thermoelectric performance of p-type Mg_(3)Sb_(2) will promote its practical applications as thermoelectric generators.

关键词： Thermoelectric First-principles Crystal field splitting energy Band convergence

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TGPred:a tumor gene prediction webserver for analyzing structural and functional impacts of variants

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Journal of Molecular Cell Biology 2020年第7期12卷 556-558页

作者： Jixiang Liu Wei Liu Xue-Ling Li Quanxue Li Wentao dai Yuan-Yuan Li Shanghai center for Bioinformation technology&Shanghai engineering research center of Pharmaceutical Translation Shanghai Industrial Technology InstituteShanghai 201203China department of Surgery Shanghai Key Laboratory of Gastric NeoplasmsShanghai Institute of Digestive SurgeryRuijin HospitalShanghai Jiao Tong University School of MedicineShanghai 200020China National engineering research center for Nanotechnology Shanghai University of Medicine and Health SciencesShanghai 201318China School of Biotechnology East China University of Science and TechnologyShanghai 200237China

With the increasing use of high-throughput sequencing technology in tumor research,a large number of somatic variations are being identified and some of them have proved to be responsible for tumorigenesis(Cancer Genome Atlas research Network et al.,2013).Investigating structural and functional impacts of tumor somatic variants would greatly help to identify causal variations,understand the mechanisms of carcinogenesis,and develop novel anti-tumor ***,many efforts have recently been made to map genomic variations to 3d protein structure,such as G23d(Solomon et al.,2016)and G2S(Wang et al.,2018).

关键词： al. Cancer structural

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